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Does this seem like a good combo? #2880060
01/25/21 06:31 PM
01/25/21 06:31 PM
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wine country
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8urvette Offline OP
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My dad and I built him a 30 over 383. it is in a 65 coronet.
9.5 to 1 compression
comp custom cam 513 lift and 274 duration (had intended to supercharge)
harland sharp rockers
m1 intake
holley sniper FI
schumacher headers, 2.5" exhaust the rear
440 source stealth heads


low stall converter, maybe 1800
727 with gear vendors and a 26" tall tire (drag radial) and 3.23 gears. (the 3.91s started to whine)

it put down 300 WHP on the Dyno. The car isnt setup right. it is gutless till about 3000 rpms it cannot do a burnout (power brake)
I believe a smaller cam, higher stall and better gearing would really help the car with the 383. But he wants to go bigger.

He wants more power and we have come across a nice 440 block and he has decided against forced induction on the 383

New plan-
440 stroked to 500 10 to 1 compression
stealth heads
eddelbrock rpm intake
sniper efi
schumacher headers, 2.5" exhaust out the rear
harland sharp rockers
cam will be in the 484-500 lift (hydraulic flat tappet)
thinking converter will be in the 2500 stall range
and maybe re gear to 3.55s

will this be a low12 second car?

20200514_184532.jpg20200823_112159 (1).jpg
Re: Does this seem like a good combo? [Re: 8urvette] #2880088
01/25/21 07:07 PM
01/25/21 07:07 PM
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s. e. pa.
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calrobb2000 Offline
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hi
yes the 383 combo is miss matched , but could be corrected !

post the actual cam card specks and piston deck heigth and valve relief size or piston no. more info = better turn out !

so are you sticking with it or going 440 ?

need a plan and stick to it !

440 plan looks ok but you must get the right cam or same as 383 it will be a dog ! plus more $ invested .

Re: Does this seem like a good combo? [Re: calrobb2000] #2880096
01/25/21 07:31 PM
01/25/21 07:31 PM
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So. Burlington, Vt.
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fast68plymouth Offline
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Low 12’s or not will be as much about “the car” as the motor.

Basic combo looks fine.

If the heads are “ootb”, a little clean up is worthwhile.

Don’t put too small of a cam in it.

Invest in a “good” converter.


68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123
Dealer for Comp Cams/Indy Heads
Re: Does this seem like a good combo? [Re: 8urvette] #2880165
01/25/21 09:37 PM
01/25/21 09:37 PM
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oklahoma
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forphorty Offline
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A change to a better converter and possibly a dual plane intake would probably do wonders for your 383 combo. You currently have less stall speed than a stock 383 RR , coupled to an engine that probably develops less low end power than a stock RR engine. Result: tires no spin . Those Shumacher headers will be awfully small for a 500 engine.

Re: Does this seem like a good combo? [Re: forphorty] #2880197
01/25/21 10:28 PM
01/25/21 10:28 PM
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Pattison Texas
csk Offline
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Right now how is the distributor set up, initial , total timing at what rpm ? probably has the wrong pistons, like was mentioned earlier, what was the piston deck height >


1968 Charger COLD A/C Hilborn EFI
512ci 9.7 compression, Stealth heads, 4.10 gear A518 ODtrans 4100lb,10.93 full street car trim


Re: Does this seem like a good combo? [Re: 8urvette] #2880204
01/25/21 10:43 PM
01/25/21 10:43 PM
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Bend,OR USA
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Cab_Burge Offline
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I would change the cam to a good N/A set up with a 106 to 108 LSA (and degree it and change complete exhaust system with bigger primary pipes, 1 7/8 or 2.0 inch, with 3.5 collectors and a complete 3.0 system from the collectors back twocents
383 motors don't have a long enough stroke to make much tire spinning happen with decent tires shruggy


Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
Re: Does this seem like a good combo? [Re: csk] #2880208
01/25/21 10:52 PM
01/25/21 10:52 PM
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Frostbitefalls MN (Rocky&Bullw...
gregsdart Offline
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Big motors solve a lot of problems. Go as big as you can in the 440 block. I would cam it so it is "on the cam" by 2400 to 2600, and use a well built converter that has stall specs similar to a 383 roadrunner converter. It should flash to 3000 to 3300 and respond like a stocker under normal driving. You and your dad will love it.


8.77 153 mph best, 3055 lbs 528 indy 440-1 alky
Re: Does this seem like a good combo? [Re: csk] #2880219
01/25/21 11:05 PM
01/25/21 11:05 PM
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Posts: 746
wine country
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8urvette Offline OP
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Originally Posted by csk
Right now how is the distributor set up, initial , total timing at what rpm ? probably has the wrong pistons, like was mentioned earlier, what was the piston deck height >

the 383 was originally built for my 68 barracuda, i gave it to my dad when i went stroker 440. it is pump gas motor for sure. with the timing, all in it is 41* and this was done on a chassis dyno, i started at like 28 or 30 and it barely ran, it loved the timing at 41* it all in around 2500-2600. i think the cranking timing is around 8* and initial is 14 or 16*

Re: Does this seem like a good combo? [Re: gregsdart] #2880220
01/25/21 11:07 PM
01/25/21 11:07 PM
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wine country
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8urvette Offline OP
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Originally Posted by gregsdart
Big motors solve a lot of problems. Go as big as you can in the 440 block. I would cam it so it is "on the cam" by 2400 to 2600, and use a well built converter that has stall specs similar to a 383 roadrunner converter. It should flash to 3000 to 3300 and respond like a stocker under normal driving. You and your dad will love it.

I went 540 in my motor, and having to go to external oiling and having the block clearance was a huge hassle, i think the 500" kit is the ticket for my dads car.

what is a "well built" converter?

Originally Posted by Cab_Burge
I would change the cam to a good N/A set up with a 106 to 108 LSA (and degree it and change complete exhaust system with bigger primary pipes, 1 7/8 or 2.0 inch, with 3.5 collectors and a complete 3.0 system from the collectors back twocents
383 motors don't have a long enough stroke to make much tire spinning happen with decent tires shruggy


i think he just wants to go 500" motor.... i have been trying and trying to get him to let me swap his cam, but he would rather build a stroker. shruggy

Last edited by 8urvette; 01/25/21 11:09 PM.
Re: Does this seem like a good combo? [Re: 8urvette] #2880268
01/26/21 03:20 AM
01/26/21 03:20 AM
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Bend,OR USA
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Cab_Burge Offline
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Let Daddy decide what he wants and then if there are any seconds thoughts about the decision it is all on him whistling thumbs
Has he rode in or drove your car with the bigger motor? work


Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
Re: Does this seem like a good combo? [Re: 8urvette] #2880304
01/26/21 09:41 AM
01/26/21 09:41 AM
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Windsor, ON, Canada
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Diplomat360 Offline
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Originally Posted by 8urvette

what is a "well built" converter?


I will give you my opinion based on street use of the car: it is a converter that will allow you to flash to the RPM that puts the motor right at the start of the range where it's making good power. So if your combo is coming on strong at 3500 you'd normally want a converter that lets the motor spin up to that RPM right away, thus "flash".

However, on the street it is no fun to just power through on the converter at each stop light, so you want that converter to be somewhat "tight enough" that it isn't flashing to that stall speed every time you apply the go-fast pedal, and instead does provide a decent amount of throttle response at the lower RPMs where most of your stop'n'go street traffic will be.

To me that is what a "well built" converter is as far as a street vehicle is concerned.

Re: Does this seem like a good combo? [Re: 8urvette] #2880362
01/26/21 11:57 AM
01/26/21 11:57 AM
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Nevada
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merpar Offline
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I just built a 383 +.060 trick-flow heads, 440 source crank 3.915 stroke. Hughes flat tappet hyd. cam. I'm expecting 550 to 600 hp. Might be the cheapest way to go, more bang for the buck. If you want cam specs I'll post later. Its 10 degrees here and I don't want to go out to the shop. Waiting for warmer weather to break cam in. Oh, and ICON has pistons for this combo about 10.4-1 comp.

Re: Does this seem like a good combo? [Re: Diplomat360] #2880364
01/26/21 11:58 AM
01/26/21 11:58 AM
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GTX MATT Offline
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What are the Schumacher headers? 1 5/8 inch tri ys?

Is the cam 274 advertised duration?

The lack of low end is the M1, 3.23s, and probably tuning. What is the compression ratio?


Now I need to pin those needles, got to feel that heat
Hear my motor screamin while I'm tearin up the street
Re: Does this seem like a good combo? [Re: GTX MATT] #2880393
01/26/21 01:00 PM
01/26/21 01:00 PM
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On the parachute mount
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n20mstr Offline
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I dont understand this??

First 440 i put in my car, it was so simple

stock 440 shortblock, 906 heads bowl ported with direct connection templates
Stock valvetrain, rockers and pushrods
Direct connection .509 hyd cam
Holley street dominator intake with 800 DP
Pro parts headers
YES the most "exotic " part a Dynamic 11" converter
3.90 geared 8 3/4 rear

At 3600lbs and regular pump gas, it ran 12.0's and IF you shifted it soon enough, and i mean soon like 5200 it would run 11.90s

a .073 jet in a cheater plate and it was a 10.70 car....

NO aftermarket heads, NO stroker crank, Nothing exotic.

I think people sometimes lose site of matching parts and with the aftermarket stuff that is availible.....
With a 440 i dont see why its hard to go low 12's. Whats going to make or break your new 440 combo is the CAM and Converter. Dont skimp on those two things


Last edited by n20mstr; 01/26/21 01:22 PM.

....BAD A$$ STREET CAR.....
Re: Does this seem like a good combo? [Re: n20mstr] #2880396
01/26/21 01:15 PM
01/26/21 01:15 PM
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JACK1440 Offline
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Originally Posted by n20mstr
I dont understand this??

First 440 i put in my car, it was so simple

stock 440 shortblock, 906 heads bowl ported with direct connection templates
Stock valvetrain, rockers and pushrods
Direct connection .509 hyd cam
Holley street dominator intake with 800 DP
Pro parts headers
YES the most "exotic " part a Dynamic 11" converter
3.90 geared 8 3/4 rear

At 3600lbs and regular pump gas, it ran 12.0's and IF you shifted it soon enough, and i mean soon like 5200 it would run 11.90s

a .073 jet in a cheater plate and it was a 10.70 car....

NO aftermarket heads, NO stroker crank, Nothing exotic.

I think people sometimes lose site of matching parts and with the aftermarket stuff that is availible.....
With a 440 i dont see why its hard to go low 12's


I agree. Low 12's... Use the factory stuff and have fun

Re: Does this seem like a good combo? [Re: JACK1440] #2880456
01/26/21 03:23 PM
01/26/21 03:23 PM
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wine country
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8urvette Offline OP
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so a 440 that will be a 30 over 500" kit with 9.6 to 1 compression, OOTB stealth heads, and if i can get to him upgrade the headers to some TTI's add a Comp Cam Xtreme Energy .545" cam, and maybe a 2800-3000 stall. with 3.55s or better.
Sniper efi and hyperspark ignition and coil and distributor and a RPM intake?

This would be a good running motor that will burn tires and motive a heavy b body?

As far as riding in my a body 540, no he hasnt been in it. It hasnt run in years. Just rewired it and some other things, started it on Sunday for the first time in about a decade.

Re: Does this seem like a good combo? [Re: 8urvette] #2880599
01/26/21 07:32 PM
01/26/21 07:32 PM
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BillR1212 Offline
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Originally Posted by 8urvette
so a 440 that will be a 30 over 500" kit with 9.6 to 1 compression, OOTB stealth heads, and if i can get to him upgrade the headers to some TTI's add a Comp Cam Xtreme Energy .545" cam, and maybe a 2800-3000 stall. with 3.55s or better.
Sniper efi and hyperspark ignition and coil and distributor and a RPM intake?

This would be a good running motor that will burn tires and motive a heavy b body?

As far as riding in my a body 540, no he hasnt been in it. It hasnt run in years. Just rewired it and some other things, started it on Sunday for the first time in about a decade.


The 1800 stall is killing you, I moved to one for about 3 days then immediately ripped it out for a 3500. My 500 inch stroker couldn't even do a burnout and it's a torque monster. With that said, it felt great on the highway with the 1800. Whats the plan for the car? 3.23 gears are pretty happy with the gear venders on the interstate. I cruise 85-90 all day long with that combo. My similar setup NA stroker in a 3300 pound E body went 11.7 in the quarter. I like the 3.23s + GV for highway cruising and happy to sacrifice the track time.

Re: Does this seem like a good combo? [Re: BillR1212] #2880627
01/26/21 08:23 PM
01/26/21 08:23 PM
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8urvette Offline OP
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with all of your input on the 383 I may be able to convince him to stick with it and not go to stroke a 440.

Please help me with this then:

383- sniper efi, schumacher headers, ootb stock stealth heads,
Comp Cam Xtreme Energy .488/.491
stall of 2800 converter
3.55 gears

will this alone change the entrie dynamic of the car? how much power it makes, how it runs and will it make the car scoot?

Re: Does this seem like a good combo? [Re: 8urvette] #2883373
02/02/21 11:49 PM
02/02/21 11:49 PM
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8urvette Offline OP
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Well I have convinced my father to keep the 383 for now.
I am going to re cam it, re gear it and go to dual plane intake.

I also need to get a quality stall converter. Brand and stall speed, this is a street car that will make a few runs down the track

Can I please get some recommendations for a cam and stall? Gears will be 3.73
Motor is 9.5 ish to 1, 30 over 383
Schumacher headers, sniper efi, stealth heads.

Re: Does this seem like a good combo? [Re: 8urvette] #2883468
02/03/21 10:48 AM
02/03/21 10:48 AM
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TonyS451 Offline
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If it were me, I would change the converter to 10-11" 3000 stall and let it rip as is.


2 kids and a dog
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