Best Intake for a Street 383

Posted By: Anonymous

Re: Best Intake for a Street 383 - 08/28/07 05:02 PM

I'm looking at the cam they used and thinking in a 383 with that cam a single planes gonna make the top of the list. Where do you guys think the peak RPM/horsepowers gonna fall with that combo? Driveability and average #s might well be with the Perf. RPM, but I would think the M1 or Weiand single planes got an advantage peak wise over even the RPM. Don't know a thing about the Victor for 383, but if the one I ran on my sb Chevy years back is an indicator, the Victor likes it way up rpm wise over most all those other intakes. Might be a bit much for that setup.

Posted By: Banzaiii67

Re: Best Intake for a Street 383 - 08/28/07 05:07 PM

1st- Edelbrock Six Pack
2nd- Edelbrock Performer RPM
3rd- Holley Street Dominator
Worst- Offy Dual-Port Or Edelbrock Performer
What do I run? My 383 runs a Performer RPM

EDIT: Haha I was right on the first two

Posted By: Freiburger

Re: Best Intake for a Street 383 - 08/28/07 05:11 PM

We have a winner: "I'll put the overall average TQ and Hp on the 6bbl, then the RPM, then the Torker."

Here's what our test showed. Each test is an average of two dyno pulls to remove anomolies. The numbers shown represent average power from 2,500 to 6,000 rpm. However, even averages do not tell the entire story. For example, the Torker and the RPM have the same average numbers, but they are not the same: the power curves cross at 3,900 rpm, with the Torker making more high-end and the RPM making more low end.

As for peak power, the Torker, Street Dominator, M1, and Victor were all at 455-456 hp at 5,900 rpm.

Nearly every manifold made 450-460 lb-ft at 3,800-4,100 rpm. Most of the dual-planes were way stronger than most of the single planes at rpm points below peak torque. Duh.

I think the tunnel ram would have done a lot better as a dual quad. I was surprised how well the Six Pack did, but I think that's because of this engine's low-rpm and low displacement. Six Packs have killed big power in other tests with other more radical engines.

That just proves that you really have to consider the test before you can make a judgement call, and you can't just look at one point of data and say "that's best" overall. It will also be interesting to see how this may change when we put better heads on the engine. If the 906 heads are currently the restriction, then other weak points in the intakes will be revealed with better heads.

More data in the December issue of HRM.

2500-6000 AVG
INTAKE LB-FT HP
Six Pack 428 348
Torker 427 348
Perf RPM 425 346
Victor 383 425 346
M1 single 424 345
1x4 tr 425 346
TM6 424 345
DP4B 424 344
Performer 422 341
Action Plus 421 341
Street Dom 421 344
Team G 409 334
Offy 360 406 338
Offy 2x4 408 330
Offy DP 404 327

Posted By: Banzaiii67

Re: Best Intake for a Street 383 - 08/28/07 05:21 PM

Looks like weiand and offy need to spend some money and re-engineer their products!

Posted By: newbee69

Re: Best Intake for a Street 383 - 08/28/07 05:24 PM

thats good news for me. Im running very close to the same setup that you are and just switched from the RPM to the six pack.
I look forward to your tests with the heads done because thats next on my list.
Thanks for a good thread.

Posted By: Anonymous

Re: Best Intake for a Street 383 - 08/28/07 05:32 PM

Quote:

Looks like weiand and offy need to spend some money and re-engineer their products!

..no kidding. I figured the Weiand Team G intake to be one of the better ones listed. BTW, like someone else said, great job.

Posted By: northcoastmopar

Re: Best Intake for a Street 383 - 08/28/07 05:34 PM

Isn't the DP4B an aluminum version of stock or I am mistaken or confusing it with something else? If it is I wonder what a stock one would do?

Posted By: Banzaiii67

Re: Best Intake for a Street 383 - 08/28/07 05:35 PM

..no kidding. I figured the Weiand Team G intake to be one of the better ones listed.

Team G sucks, I had it on a 383 w/ the large summit cam and it was horrible, i ended up putting a edelbrock performer intake and it ran a lot better. This test just proved my feeling for weiand products.

Posted By: InViolent

Re: Best Intake for a Street 383 - 08/28/07 05:35 PM

OK...but if you look at what you can do with your mill for the old "bang for the buck" premise, a 4bbl on top of the RPM is WINNER IMHO.

Posted By: Freiburger

Re: Best Intake for a Street 383 - 08/28/07 05:36 PM

Yep. For street/strip, the RPM is almost always a "can't go wrong" choice.

DF

Posted By: 440newport

Re: Best Intake for a Street 383 - 08/28/07 05:38 PM

Quote:

OK...but if you look at what you can do with your mill for the old "bang for the buck" premise, a 4bbl on top of the RPM is WINNER IMHO.

Best bang for the buck looks to be a $75 25 year old used torker and 850 holley.

Posted By: Freiburger

Re: Best Intake for a Street 383 - 08/28/07 05:39 PM

Quote:

..no kidding. I figured the Weiand Team G intake to be one of the better ones listed.

For what it's worth, the Weiand intakes we tested are really old designs. The company is currently revamping most of its intakes, and the Chevy stuff we've seen from them so far is really good.

DF

Posted By: Banzaiii67

Re: Best Intake for a Street 383 - 08/28/07 05:41 PM

For what it's worth, the Weiand intakes we tested are really old designs. The company is currently revamping most of its intakes, and the Chevy stuff we've seen from them so far is really good.

DF

Have the fixed their narley casting?

Posted By: Freiburger

Re: Best Intake for a Street 383 - 08/28/07 05:44 PM

Yes.

I was at the old Weiand foundry once. Wow. Lots of legacy there.

DF

Posted By: AndyF

Re: Best Intake for a Street 383 - 08/28/07 05:56 PM

One thing that is tough (impossible?) to test on the dyno is the throttle response. I suppose the shape of the torque curve gives an indication but it isn't he whole story. The big single planes can make good torque on the dyno but sometimes on the street they have a hole in the throttle response. I've found that the Performer RPM really works on the street even if it gives up a few ponies on the top end. I bet the factory six pack setup also works great on a mild motor.

I did a manifold test for PHR a few years back where we tested the Performer RPM against the Victor 383 on my low deck 470 motor. The Victor made a couple of more hp than the RPM on the chassis dyno but it was a dog compared to the RPM in the "punch from a roll" test. The RPM would smoke the tires at will while the Victor had a bit of a bog.

One thing I want to do is to try to run a Dominator on my street car with a dual plane intake. I want to see if I can actually tune a Dominator to work at part throttle and still make the power on the top end. I wish someone made a BB Mopar intake that was dual plane with a 4500 flange but nobody does. I always liked that old C454 intake that Edelbrock made for the BBC motor.

Posted By: Freiburger

Re: Best Intake for a Street 383 - 08/28/07 05:58 PM

The Offy 360 we tested had a 4500 flange. Obviously, the 4500 carb offers no advantage that the intake itself can't tear down.

DF

Posted By: Anonymous

Re: Best Intake for a Street 383 - 08/28/07 07:19 PM

Quote:

For what it's worth, the Weiand intakes we tested are really old designs. The company is currently revamping most of its intakes, and the Chevy stuff we've seen from them so far is really good.

DF

Have the fixed their narley casting?

Lol. I've got an old Weiand Team G intake for 383(not currently on motor) and it is a bit of a rough casting appearance wise. Even the floor of the plenum is grainy enough looking that I always wonderred if it might be a bit porous once engine was heated up.

Posted By: juicedcuda

Re: Best Intake for a Street 383 - 08/28/07 07:42 PM

i have the rpm on my 383 now. i am about to start spraying it though. wont i see a better gain using a single plane like the M1.

Posted By: Freiburger

Re: Best Intake for a Street 383 - 08/28/07 07:52 PM

People tell you not to use a dual-plane with nitrous, mostly due to cylinder-to-cylinder distribution issues. Me, I've run 150-175hp shots through a lot of dual-planes with no issue. More hp than that and I'd start to pay a lot more attnention.

DF

Posted By: petty43

Re: Best Intake for a Street 383 - 08/28/07 08:10 PM

Do you have any numbers on a stock 4 barrel 383 intake?

Posted By: DPelletier

Re: Best Intake for a Street 383 - 08/28/07 08:12 PM

Perfect timing, David; this is just the thing to make you go

on the "magazine" thread.

Still lots of useful stuff going on, obviously.
We also had a recent thread on the viability of a six pack on a stroker LA, so although we can't make direct comparisons, this is interesting in that context as well.

I look forward to buying the mag and reading the rest of the article. Good work.

Dave

Posted By: JohnRR

Re: Best Intake for a Street 383 - 08/28/07 08:13 PM

well i called the big loser right on , but thats only going off info i read on the internet

..

i'm impressed wit hthe numbers from the DP4B , i'm glad i recently bought another one .

Posted By: 1OFNONE

Re: Best Intake for a Street 383 - 08/28/07 10:29 PM

Quote:

1OFNONE how does that STR-14 run compared to say a Holley SD,M1, Torker? Any tests or dyno?

I read somewhere that stock for stock the STR is a 30 horse crutch over a good single plain.

There are a few guys that really know how to tune and modify one to run really well. I know the basics and thats it.

After I get my suspension tuned right I will put a good single plane and a 850 on it and then I will post the findings. Not till next year.

Posted By: 1OFNONE

Re: Best Intake for a Street 383 - 08/28/07 10:41 PM

Thanks for all the compliments on my street car. I have alot of fun driving it.

I wanted the drug out of a barn vintage drag car look.

Thanks again guys.

Maybe I will send some photos into a magazine.

Posted By: cdp

Re: Best Intake for a Street 383 - 08/28/07 11:33 PM

Good thread. I just recently picked up a DP4B and I'm going to run it on my 70-Bee with a 383/4spd combo. I hope the Comp. XE274 isn't too much for a mild build with stock exhaust.

any opinions on that?

Posted By: Ronnman

Re: Best Intake for a Street 383 - 08/29/07 03:10 AM

Dave - Can you provide the torque and HP curves vs RPM for the different intakes?
Thanks,
Ron

Posted By: Freiburger

Re: Best Intake for a Street 383 - 08/29/07 06:45 AM

They all made peak torque around 4,000 and peak hp around 5,900. Sorry, I can't type 15 different full curves onto the message board. Maybe one or two. What are you interested in?

DF

Posted By: Daty Rogers

Re: Best Intake for a Street 383 - 08/29/07 09:59 AM

Quote:

We have a winner: "I'll put the overall average TQ and Hp on the 6bbl, then the RPM, then the Torker."
rpm.

2500-6000 AVG
INTAKE LB-FT HP
Six Pack 428 348
Torker 427 348
Perf RPM 425 346
Victor 383 425 346
M1 single 424 345
1x4 tr 425 346
TM6 424 345
DP4B 424 344
Performer 422 341
Action Plus 421 341
Street Dom 421 344
Team G 409 334
Offy 360 406 338
Offy 2x4 408 330
Offy DP 404 327

What's interesting is there is only about a 5% difference top to bottom.

-Daty

Posted By: gch

Re: Best Intake for a Street 383 - 08/29/07 10:17 AM

i was glad to see the performer post good numbers.it gets alot of bashing but shows to be a good intake for a street 383.
the street dominator did'nt carry the torch so well compared to it's rb sibling.

Posted By: bee1971

Re: Best Intake for a Street 383 - 08/29/07 04:24 PM

2500-6000 AVG
INTAKE LB-FT HP
Six Pack 428 348
Torker 427 348
Perf RPM 425 346
Victor 383 425 346
M1 single 424 345
1x4 tr 425 346
TM6 424 345
DP4B 424 344
Performer 422 341
Action Plus 421 341
Street Dom 421 344
Team G 409 334
Offy 360 406 338
Offy 2x4 408 330
Offy DP 404 327

From the Street Dominator to the Six Pack there is a difference of 7 #s of torque and 4 HP

Like anyone will notice that seat of the pants on the street - Sounds like all good intakes on average

However what makes the most HP and Torque say around 5500 - 5800 or even 6000 rpms were most of us might shift gears on our street 383 motors ???

I bet the Street Dominator is close to the top

I would like to see exact #s down low and exact #s at 5500 6000

Thats the great thing about the Street Dominator
Decent #s down low for a single plane(Right there on average with the best dual planes)but it really shines on top i bet say 5500 - 6000 rpms

Scott

THANX FOR ALL THE GREAT INFO - GOOD JOB BY THE WAY !!!

Posted By: Ronnman

Re: Best Intake for a Street 383 - 08/29/07 04:31 PM

Dave,
Could you post the Street Dominator and the DP4B torque and HP curves?
Thanks,
Ron

Posted By: bee1971

Re: Best Intake for a Street 383 - 08/29/07 04:34 PM

Quote:

They all made peak torque around 4,000 and peak hp around 5,900. Sorry, I can't type 15 different full curves onto the message board. Maybe one or two. What are you interested in?

DF

I didnt see this post

How about the Street Dominator (Single plane)
versus the Performer or DP4B (Dual plane)

Would like to see the difference down low versus say 5500 - 5800 rpms

Thanx Scott

Posted By: DynoDave

Re: Best Intake for a Street 383 - 08/29/07 04:34 PM

Excellent info dave. Thanks for posting this. I'll be running a Performer on my 400 due to low hood clearnace...doesn't look like it gives up that much to an RPM (with your combo). That's good to know!

Posted By: moper

Re: Best Intake for a Street 383 - 08/29/07 05:01 PM

Cool. I agree on why the 6bbl did well. Small engine, decently low peaks. I'm curious tho. It seems that all these are a little softer than I would expect from the parts listed. How mu ch fussing was needed to dial them all in? Which one had the best BSFC at peak tq, and what was that number? I like these tests, but sometimes you just uncover a whole bunch more questions. thanks for making us think!

Posted By: Freiburger

Re: Best Intake for a Street 383 - 08/29/07 05:10 PM

Here are just a few data points. Also, a reminder that this thing had STOCK heads. I think the heads were the restriction, therefore the manifolds did not make drastic changes; except for the really bad ones, the different intakes just wiggled the numbers around by 5-10 hp or shifted them to the low rpm (dual plane) or high rpm (single plane). I'm pretty certain there will be more difference between the intakes once some better heads are on the engine. I find that out at the end of the month.

Street Dominator
3,000: 381, 217
4,000: 449, 342
6,000: 395, 452

Torker
3,000: 395, 225
4,000: 455, 356
6,000: 397, 454

Perf RPM
3,000: 408, 233
4,000: 457, 348
6,000: 392, 448

DP4B
3,000: 419, 239
4,000: 454, 346
6,000: 387, 442

Performer
3,000: 418, 238
4,000: 452, 344
6,000: 382, 436

Six Pack
3,000: 413, 236
4,000: 459, 350
6,000: 391, 447

Posted By: Banzaiii67

Re: Best Intake for a Street 383 - 08/29/07 05:19 PM

From the looks of that the DP4B & Torker look pretty darn good considering you can pick one up off ebay for less than $75. Thanks DF

Posted By: Freiburger

Re: Best Intake for a Street 383 - 08/29/07 05:20 PM

Quote:

It seems that all these are a little softer than I would expect from the parts listed. How mu ch fussing was needed to dial them all in? Which one had the best BSFC at peak tq, and what was that number? I like these tests, but sometimes you just uncover a whole bunch more questions. thanks for making us think!

You realize these are average numbers, right? (except for the ones in my most recent post) Peaks with the Six Pack, for example, were 459 lbs-ft at 4,000 and 450 hp at 5,900. I thought that was pretty good for stock heads (you wouldn't get there with stock heads on a similar 383 Chevy).

BSFC at peak torque was .41-.50. Different intakes liked different amounts of fuel. We jetted the Holley on each setup to find optimum, but could not do so on the Six Pack (which was good out of the box, perhaps a little fat) or the Edelbrock dual quads.

Sheez, I might as well just write the entire story here! But the questions help me know what you guys want to see. Thanks.

Posted By: supserdave

Re: Best Intake for a Street 383 - 08/29/07 05:33 PM

The real test will be when you get some better heads and a bigger cam. With the weak point being the intake, then the big differences between all of them will come out.

This is still great data, shows you don't have to spend money on aluminum heads and still make good numbers for a street car.

Another side question, is about 450hp the limit for stock heads on a 440 as well, with a similar build?

Posted By: Freiburger

Re: Best Intake for a Street 383 - 08/29/07 05:37 PM

These same heads on Dulcich's 440 made 470 on a differnt dyno. Virtually every 906 head I've ever tested has been limited to 450-470.

The intakes will totally rank differently with a real cam and heads. I think you'll see the RPM get way better then the Performer, the Victor way better than the Torker, etc.

DF

Posted By: AndyF

Re: Best Intake for a Street 383 - 08/29/07 05:59 PM

Here is the article I did for Mopar Muscle back in 2005. This was a low deck stroker motor (470 inches) that made 550 at the crank and 475 at the rear tires. The Performer RPM was much better than the Victor 383 for street driving and on the dyno they were very close. The Victor made a little more on the top end but gave up a bunch of torque at the bottom. Since you'll be running headers you might see the Victor make some more power. I was running a MP .528 cam so if your next dyno test uses a bigger cam then the single planes might pull ahead a bit more.

http://www.compcams.com/Community/Articles/Details.asp?ID=2004264609

Posted By: Freiburger

Re: Best Intake for a Street 383 - 08/29/07 06:23 PM

You used an Edelbrock carb both on the dyno and on the street? IMO those tend not to like huge plenum volume because they are signal sensitive. That shows less on the dyno than in part-throttle loading on the street. Holleys are the same, but seem to be more easily band-aided.

I bet that Wilson 2-inch tepered combo spacer really worked on the RPM. I usually find them to add some top end without hurting power anywhere. Then sometimes they don't work at all. Carb spacers are voodoo.

Posted By: AndyF

Re: Best Intake for a Street 383 - 08/29/07 07:23 PM

Yep, I used both a 800 AVS and the 800 AFB carb. They both worked okay but we might have been leaving a little on the table. My issue with the Eddy carbs is that the guys at Edelbrock won't provide any aftermarket parts for the carbs so they can't be "tweaked". Without a supply of throttle bodies, venturi clusters, etc. you're limited in what can be done to the carb. If you run out of pump shot for instance you're out of luck.

The Performer RPM liked the carb spacer. The more carb spacer we gave it the better in terms of top end power but the big spacer did cause a bit of a bog. With a Holley DP carb the bog might be covered up but the Edelbrock carb is limited on the pump shot.

Posted By: moper

Re: Best Intake for a Street 383 - 08/29/07 08:39 PM

Well, I didnt realize they were stock heads...lol. I know I read it. I just didnt recall it when it mattered

. On the averages, I was thinking the tq average should be fairly close to peak value anyway, given the range of the test values. Meaning they wouldnt have had real peaky results and they'd exibit fairly flat tq curves. Maybe my thinking is off on that too. I'd like to see some back to back stuff if you're bored. A nice one would be the Holley/Edelbrock/Demon/someone's custom shop version carbs on a street type 4.25 stroke BB. Or 2.08 vs 2.14/2.18 valved iron heads with the same level of porting on a small bore (383) wedge.

Posted By: AndyF

Re: Best Intake for a Street 383 - 08/29/07 09:21 PM

Well if you're talking to me I'll say that I don't intend to ever do another Mopar article with cast iron heads. The last one I did was the 383 stroker article for Mopar Muscle. The Eddy heads picked up about 50 hp over a set of non-professionally ported 906 heads.

After that dyno test I sold the heads and I also sold all of my core heads. So I don't even have any cast iron heads in my shop anymore and I don't intend to ever buy any or work on any again. Breathing cast iron dust just isn't any fun for me!

http://www.moparmusclemagazine.com/techarticles/mopp_0605_mopar_performance_383_stroker_engine

Posted By: Freiburger

Re: Best Intake for a Street 383 - 08/29/07 10:30 PM

What's amazing is that you saw 500 hp with iron heads. We haven't gotten that from 906s even with bigger engines that have larger cams. Perhaps that pocket porting was better than you thought.

Posted By: JohnRR

Re: Best Intake for a Street 383 - 08/30/07 01:23 AM

Quote:

What's amazing is that you saw 500 hp with iron heads. We haven't gotten that from 906s even with bigger engines that have larger cams. Perhaps that pocket porting was better than you thought.

you want to be more amazed , check out the 383 in member fast68plymouth , Dwayne Porter/Porter Racing Heads ... hows 500HP with NON PORTED 906's (ok they are NHRA STOCK LEGAL)it's a 383 , maybe punched out to .060 ??? , the numbers wit hthe stock intake and carb where fairly impressive also .

Posted By: moper

Re: Best Intake for a Street 383 - 08/30/07 01:57 AM

Andy, I was talking more to Dave. I agree using aluminum makes the most sense today. But the vast majority of guys building these things are still using iron. Some with the understanding that they will not end up keeping them on there. And there's some misinformation regarding even their use on some setups due to advances in cylinder head understanding. (like Dwayne's...) I sympathize with you. But reality is there's still thousands more sets of iron being re-used than there are aluminum at this point. And many of the readers of the mags are the guys who will run iron first for budget reasons.

Posted By: Freiburger

Re: Best Intake for a Street 383 - 08/30/07 02:13 AM

Thing is, by the time you buy some 906s, clean them; mag 'em; mill them; install new guides, valves, and seats; get a valve job; and enlarge the seats, you're halfway to a new set of aluminum heads.

Posted By: AndyF

Re: Best Intake for a Street 383 - 08/30/07 03:10 AM

I think I had $1200 in my last set of 906 heads (the ones we used on that 383 stroker motor) after doing all the work. That includes buying new valves, springs, retainers, locks, guides, seals plus doing all the machine work and the bowl hogging. Porting would've been even more.

The Eddy heads are a lot cheaper than a comparable flowing 906 head.

Posted By: Kingy

Re: Best Intake for a Street 383 - 08/30/07 03:11 AM

Holley Street Dominator

Posted By: 1_WILD_RT

Re: Best Intake for a Street 383 - 08/30/07 03:33 AM

Quote:

Thing is, by the time you buy some 906s, clean them; mag 'em; mill them; install new guides, valves, and seats; get a valve job; and enlarge the seats, you're halfway to a new set of aluminum heads.

Probably more, easily 2/3's, I don't know how many times people have come on here talking about the loss of heat from the aluminum equals lost power, instead of looking at the advantages looking for a reason to stay with the old tech...

Posted By: fast68plymouth

Re: Best Intake for a Street 383 - 08/30/07 05:17 AM

just put a bigger cam in it, and some bigger headers, and the peaks will climb several hundred RPM......and the numbers should go up too.

my stock 906 headed, TRW piston, 400 cast crank 383 pushed my heap into the 11.20's at 3650lbs with a steel flat hood, and 11-teens at 3550lbs with a six pack hood.

my motor made peak HP around 6200, and peak tq around 4300 with an RPM intake and 1 7/8" headers.

my buddies NHRA stocker Pontiac makes 470-ish hp with heads that are nowhere near as good as 906 heads(they flow like 210cfm @ .425 lift), and he's doing it with a .425 lift hyd cam, and the stock intake and carb.

it was #9 qualifier at the Toyo Nationals a couple weeks ago in Reading, Pa. with a 10.86 (1.08 under the index) at 3450lbs, and actually went a 10.81 on the brakes during eliminations.

i'm just saying 470hp from heads that flow 225-230cfm isnt really all that hard to do.

Posted By: Freiburger

Re: Best Intake for a Street 383 - 08/30/07 08:16 AM

Quote:

just put a bigger cam in it, and some bigger headers, and the peaks will climb several hundred RPM......and the numbers should go up too.

i'm just saying 470hp from heads that flow 225-230cfm isnt really all that hard to do.

Nope. In fact, the same 383 used in the intake test that started the thread made 466 hp at 6,300 with a Victor intake and with a 263/267 solid flat-tappet.

Posted By: Anonymous

Re: Best Intake for a Street 383 - 08/30/07 10:12 AM

Glad to see the SD is in the list as I use one. Although not optimal for a 8.7:1 mild 400 I'll probably hang on to it when future upgrades hit unless I come across an RPM for a good price which could probably then twist my arm in getting rid of the SD.

Posted By: JohnRR

Re: Best Intake for a Street 383 - 08/30/07 12:41 PM

Quote:

Thing is, by the time you buy some 906s, clean them; mag 'em; mill them; install new guides, valves, and seats; get a valve job; and enlarge the seats, you're halfway to a new set of aluminum heads.

true , but when you build to run in a class like FAST you HAVE to run stock iron heads , so the point of the cost is MOOT , you either bite the bullet and do it or buy the alum heads and bracket race .

i've got more money than the cost of ebroks in 2 sets of 906's i presently have , one because the shop i had dod them originally madethem flow worse than stock with their COMPETITION VALVE JOB , and i'm having another set done to be pure stock legal that will probably be as much as a set of ebrocks , probably more ...

Posted By: AndyF

Re: Best Intake for a Street 383 - 08/30/07 03:27 PM

I didn't think that the 500 hp we saw from the 432 motor with 906 heads was out of line. Stevie D's "Air Hammer" 440 was pretty consistently in the 630 hp range with his ported iron heads on it. That was just a 0.060 over 440 with a Weiand intake, 12.6 compression, solid roller cam motor.

He had ported 915 heads rather than 906 heads but that shouldn't be that big of a deal. I think he topped that motor out at 660 hp with a tunnel ram but with a single 4bbl he usually was in the 620-640 hp range.

Posted By: moper

Re: Best Intake for a Street 383 - 08/30/07 04:12 PM

I'm not debating the logic behind AL heads. I've spent past $1200 on 3 or 4 sets of iron heads in the past year. The fact is, these guys either didnt want AL for whaever reason, or decided to cut the $200 difference and run iron factory. RPMs are upt $1300+ now, and the arguably obligatory fix up another $200. Yes, they are lighter, yes the chambers will help with the pump crud now, yes the ports flow better even in OOTB form, yes they look nicer. But, it comes to "I dont have the $200 more. Just redo the iron". As far as HP, I've got several 440s running around with what I'd call amature porting (read as mine...

) that make close to 500hp. It's not hard to do. But to get that on a 383, that's a bit more of a stretch unless you plan to run higher compression and cam/rev them. Then it's not really that hard either. Hence my suggestions.

Posted By: Jack Zupan

Re: Best Intake for a Street 383 - 08/31/07 02:22 AM

What fix is needed for the RPM heads? I am not very familiar with them and this is the first I have heard of it.

By the way this is a really interesting thread. My 383 has all the wrong components; 509 cam, stock intake, low compression and 3:23 gears. Needless to say it runs like a dog. I have been waiting a bit to make a decision on what direction to go. I was ready to put the thing in a corner of the garage and put a built 440 into the car but maybe a few critical changes to the 383 would help.

Thanks,

Jack

Posted By: DynoDave

Re: Best Intake for a Street 383 - 08/31/07 03:26 PM

Quote:

The real test will be when you get some better heads and a bigger cam. With the weak point being the intake, then the big differences between all of them will come out.

This is still great data, shows you don't have to spend money on aluminum heads and still make good numbers for a street car.

Another side question, is about 450hp the limit for stock heads on a 440 as well, with a similar build?

If by "real test", you are refering to the limits of the manifolds capabilities, I'd agree with you.

As far as this test being a "real test", this initial setup is much more reflective of what I will run than something with better heads and a bigger cam will be. So I'm quite pleased they chose this combo as a starting point.

Posted By: moper

Re: Best Intake for a Street 383 - 08/31/07 03:51 PM

Quote:

As far as this test being a "real test", this initial setup is much more reflective of what I will run than something with better heads and a bigger cam will be. So I'm quite pleased they chose this combo as a starting point.

Jack, there are plenty of threads on running Edelbrocks out of the box. Some do it and love them. Some have them looked at by good head shops, and those routinely find minor "issues".

-I wont run them out of the box, because I feel if I'm spending the $$, I want all the possble benefits. I think there's a lot of guys running them OOTB that leave some on the table becuase of Edelbrock's mass production. And BTW, it's the case with every aftermarket head out there. Not just Mopars, not just Edelbrocks. MP is possibly the worst.

Posted By: DPelletier

Re: Best Intake for a Street 383 - 08/31/07 04:08 PM

Quote:

Quote:

The real test will be when you get some better heads and a bigger cam. With the weak point being the intake, then the big differences between all of them will come out.

This is still great data, shows you don't have to spend money on aluminum heads and still make good numbers for a street car.

Another side question, is about 450hp the limit for stock heads on a 440 as well, with a similar build?

If by "real test", you are refering to the limits of the manifolds capabilities, I'd agree with you.

As far as this test being a "real test", this initial setup is much more reflective of what I will run than something with better heads and a bigger cam will be. So I'm quite pleased they chose this combo as a starting point.

In fact, this is a refreshing change from the usual practice of bolting on intakes to some 600hp tricked out mill. People read that stuff and then apply it to thier own (much more basic) motor combos and don't realize they screwed up!

If you don't have the head flow and maybe are limited by your stock HP manifolds then an intake or cam geared towards high rpm hp production is a step in the wrong direction. Those people would be far better off using components aimed at improving thier low and mid range torque capabilities.

Dave

Posted By: Anonymous

Re: Best Intake for a Street 383 - 09/01/07 03:56 AM

Andy,, what ever happened to that 432 engine. I thought that was a very interesting artical & would have loved ot see it go to a Tunnel Ram & full tune. Or hey, what about that plus another point of CR & run it on E85. Or you could just box up the pieces that where left & send them to me

Opp's, sorry I guess I am kinda Hyjacking a good thread here.

You know I am not surprized that a Six pack done as good as it did in this test. I think with more head flow & the right tuning the Six Pack will surprized all again. You have to step up pretty good to out do those setups. But once you step up that far its a whole differnt ball game.

Jess

Posted By: Anonymous

Re: Best Intake for a Street 383 - 09/01/07 04:26 PM

Quote:

More data in the December issue of HRM.

Okay, I'm new to this site and need some assistance in getting up to speed. What magazine does Freiburger write for? I want to pick up that issue for sure. When will that issue be on newsstands?

It's wonderful to see some attention directed to the often-overlooked B 383 engine. My personal pick is the DP4B. Although I haven't had a chance to try it yet, I purchased it off eBay for the following reasons:

1) It has a near stock looking appearance. I've seen guys� paint these old intakes engine-color. To the untrained eye, it looks stock, perfect for that sleeper look, or for the purist that is after that factory look, but still wants some improved performance as well.

2) This intake actually has a Chrysler P/N #.

3) Now to find out, this intake makes some good low-end torque for the peaky little 383, right on!

Posted By: Blackwidow69

Re: Best Intake for a Street 383 - 09/01/07 04:56 PM

Well, Freiburger doesn't just write, he is the overall editor for HOT ROD magazine. At one point he was editor for like 4 mags but I beleive he has successfully squared them all away(read that as added mopar content) and is now mostly focusing on the biggest, HOT ROD.
Todd

Posted By: 71TA

Re: Best Intake for a Street 383 - 09/01/07 06:35 PM

Quote:

Here is the article I did for Mopar Muscle back in 2005. This was a low deck stroker motor (470 inches) that made 550 at the crank and 475 at the rear tires. The Performer RPM was much better than the Victor 383 for street driving and on the dyno they were very close. The Victor made a little more on the top end but gave up a bunch of torque at the bottom. Since you'll be running headers you might see the Victor make some more power. I was running a MP .528 cam so if your next dyno test uses a bigger cam then the single planes might pull ahead a bit more.

http://www.compcams.com/Community/Articles/Details.asp?ID=2004264609

Thats MY moder now

I put a Victor on and it STUNK on the street (plus Andy had sold me the short block with a tad bigger Comp mechanical cam). I switched the cam to the MP 528 and the intake to the RPM and LOVE IT. I JUST got back from runnig to the auto parts store in and grocery store. When I stopped by the auto parts store in Detroit I drew a crowd. Lit em up in 2 gears (almost got away from me) for the the crowd. Thanks again Andy!

Oh and the moder also has max ported (Modern Cylinder Head) Edelbrocks.

NOW that I have an LM1 I'd love to try a six pack again. there is no way to run a six pack without an LM1 to tune it. Trust me! But I have no $$$ now-a-days

PS Good to meet you (Freiburger) at my gasket tent at the Nats! Tell your buddy to get me those Ramcharger (air grabber) gaskets. Thanks!

Posted By: fast68plymouth

Re: Best Intake for a Street 383 - 09/02/07 03:52 PM

my basic combo is:

-383 + .030(4.280 X 3.388), 390ci
-TRW L2315's, block decked for +.018 deck height, std replacement OE type rings
-cast crank from a 400, offset ground for +.013" stroke, externally balanced
-906 heads, OE replacement valves, good VJ, milled to 80cc,
dual springs, no porting
-256/262, .560/.580, 106lsa cam
-Isky iron rockers, 1.5 ratio
-OE oil pan, 3/8" p/u, original 100,000 mile oil pump with HP spring(80psi hot)

i tested a bunch of carbs, some pullies, etc, and here are some selected results(as taken from the Tech Archives).

Attached picture 3746459-383dyno-chart1.jpg

Attached picture 3746459-383dyno-chart1.jpg

Posted By: Anonymous

Re: Best Intake for a Street 383 - 10/11/07 01:56 AM

I was quite happy to see the 383 buildup.My Charger's 383 has a MP repro magnum cam,906's,a DP4B with a 4 hole spacer and a 780 Holley.I don't have any dyno specs or timeslips,but it's right there when you step on it!I gotta get the brakes,electrical,and steering sorted out before I try driving it again!

Attached picture 3871320-1081.jpg

Best Intake for a Street 383