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77 440 build

Posted By: dragduster71

77 440 build - 03/03/13 06:26 AM

ok i found a 77 440 from a warlock truck,i know these smogger 440's are low powered but lets say if the bottem end is good for a re ring and bearings,leaving the low compression pistons in it,add a cam xe268,rpm intake, headers,rebuild the 452 heads and and maybe a bowl blend and shave maybe 20 of the heads,20 gasket, 750 carb about how much power would it have?its gonna go in a 66 newport that curently has a 383 2 barrel rated at 270 hp.im not looking for an allout powerplant for this tank.lolany guess?i read on another site about 375hp?
Posted By: dragduster71

Re: 77 440 build - 03/03/13 06:32 AM

ive also seen a few motor home engines with low compression like this one with mopar 509 cam,stock 915 heads,m1 intake 3000 stall 391 gears 28 tire etc do 11.90s in a duster not saying thats what im aiming for at all! but a low compression engine can make some decent power.
Posted By: Commando1

Re: 77 440 build - 03/03/13 02:34 PM

A basic rebuild alone but with higher C.R. pistons, a Purple cam, and a decent intake @ 750 cfm will get you towards the 400 hp mark without blinking.
Posted By: mshred

Re: 77 440 build - 03/03/13 03:15 PM

My dad has a 69 dart with a 69 440 motor, stock bottom end with new rings and bearings, 906 heads ported with the templates, 850 holley, M1, .557 purple shaft cam, TTi headers, 3500 stall converter and 4.88 gears and it runs awesome! Hasn't had it to the track yet, but he built the motor over 20 years ago and its definitely a torquey setup!

Runs on 87 octane too!
Posted By: slippery440

Re: 77 440 build - 03/03/13 03:16 PM

Here is a idea. If the motor is that good and really don't need to be rebuilt witch really could be.Lets leave the short block alone. Put a lumpy cam in it that is ground for a low compression motor.Now if this motor had few miles on it and was running and you saw it running. Just do a simple valve job and replace the valve seals. Put a good 4 barrel manifold on it either aluminum or steel and a new 650 or 750 holley. Then tell everyone that it makes 500 horse like all the rest of the people I talk to at shows and cruise ins.
Posted By: buck440

Re: 77 440 build - 03/03/13 05:11 PM

Quote:

ive also seen a few motor home engines with low compression like this one with mopar 509 cam,stock 915 heads,m1 intake 3000 stall 391 gears 28 tire etc do 11.90s in a duster not saying thats what im aiming for at all! but a low compression engine can make some decent power.

my 77 motorhome 440 stock bottom end 509, 915' milled.060 torker intake 850 speed demon carb,proparts headers,3000 stall 4.56 gear 28 inch tire duster @3560 with me in it went 11.94@112 was some where in the area of 413 hp rwhp.
Posted By: dragduster71

Re: 77 440 build - 03/04/13 12:26 AM

curious how did they measure the power on the later 440's?whats bhp?if they dynoed it with out all the emissions and stuff on it put it on a dyno like the earlier 440's? how much hp would it have?this has always bother me because they say net hp.
Posted By: DaytonaTurbo

Re: 77 440 build - 03/04/13 05:50 AM

Quote:

curious how did they measure the power on the later 440's?whats bhp?if they dynoed it with out all the emissions and stuff on it put it on a dyno like the earlier 440's? how much hp would it have?this has always bother me because they say net hp.



Well new cars are all measured in net hp as well, so that really puts a 200hp late 70's 440 to shame. If you scrap all the emissions stuff, other than compression a smogger 440 is basically the same as a 71 440, which was the last year for the high cr stock pistons. If everything else was equal, and in brand new condition, I would guess you'd be 30-40hp off from the compression loss, when comparing t0 the 71 gross hp numbers. So the regular 350hp 440, would probably be more like 315hp with the smogger pistons.

The biggest drawback with using an old short block is ring seal. If that's poor, you won't make the power in the upper rpm that you should. But if you just need something to get running, sound good and dump in the car it should fit the bill nicely.
Posted By: scratchnfotraction

Re: 77 440 build - 03/04/13 04:04 PM

Quote:

Here is a idea. If the motor is that good and really don't need to be rebuilt witch really could be.Lets leave the short block alone. Put a lumpy cam in it that is ground for a low compression motor.Now if this motor had few miles on it and was running and you saw it running. Just do a simple valve job and replace the valve seals. Put a good 4 barrel manifold on it either aluminum or steel and a new 650 or 750 holley. Then tell everyone that it makes 500 horse like all the rest of the people I talk to at shows and cruise ins.



this is what i did with my 77 MH 440 in the 88 truck.
Posted By: racealittle

Re: 77 440 build - 03/04/13 04:21 PM

I would say that through exhaust manifolds and duals that 300 hp, plus or minus 20 hp depending on how well you tune the motor. That is likely as good as it gets, for an older low compression 440. A cam change might net 5 to 15 more hp, but at a loss of tires shredding bottom end tq.

I have had more than my fair share of flogging old low compression 440 engines. Good heads, the right intake/carb(s), good headers, good ignition, and open exhaust with the right cam can net 430-450 hp with the right tune. BUT, that is $3000 plus worth of good parts that would make higher compression engines 500-600 hp.
Posted By: Mr.Yuck

Re: 77 440 build - 03/04/13 05:40 PM

do not use a mopar 509 cam or old style 484 in that motor it will be a dog. AMHIK. IF you want to keep the bottom end call and get a custom cam ground for it. The 268 is ok but doubt you'll see any imporvenment over say a Summit 488 cam. Unless you are going to add converter and gear it's a moot point. If the 383 runs well you might want to consider replacing the t-chain, adding the summit 488 cam, headers, dual plane intake and roll. It will run very well.
Posted By: RalleyA12

Re: 77 440 build - 03/05/13 01:44 AM

You should look into the Hughes Whiplash cam for a low compression motor.

http://www.hughesengines.com/TechArticles/dunnuckracing440withwhiplashhmc3245bl7cam.php
Posted By: dragduster71

Re: 77 440 build - 03/05/13 06:23 AM

WELL THE SUMMIT 488 CAM IS FROM 2000 TO 5500 AND THE XE268 IS 1600 TO 5800 AND IT SHOULD NOT NEED A HIGER STALL IT STATES LARGEST CAM FOR STOCK CONVERTER AND I REALLY LIKE THE WAY IT SOUNDS,THE 383 IS PRETTY NASTY INSIDE IT DOES RUN GOOD THOUGH,GOOD OIL PRESSURE AND DOESNT GET HOTTER THAN 190 (SO FAR).IM STILL DEBATING IF I SHOULD REBUILD A 440 OR JUST ADD A FEW THINGS TO THE 383.ITS HARD BECAUSE THIS CAR WEIGHTS 5000LBS IM SURE AND EVEN IF IT HAD 500 HP IT PROBABLY WOULDNT BREAK 13'S LOL.AND FOR THE HUGHES WHIPLASH CAM I HAD ONE FOR THE 67 DART GT I SOLD AND NOW WISH I WOULDNT HAVE SOLD MY 440 SHORTBLOCK I BUILT .
Posted By: dragduster71

Re: 77 440 build - 03/05/13 07:35 AM

i wonder how good the xe268 would sound in my 383?any one have videos of that?
Posted By: cudadoug

Re: 77 440 build - 03/06/13 03:32 AM

Late 70's cast crank smogger shortblock
OE 452 heads with fresh surface and fresh VJ
MP .484 Purple cam
OLD Eddy Torker
Holley 750
Recurved dist
Stock 727 with RMVB and OEM (Hemi?) 11" converter
4.56's and 28" tall slick
Open 2" headers
**4,000+ Wagon with driver**

12.40's @ 110...best of 12.26 in mineshaft air

Another smogger 440...
OE 452 heads, fresh with stainless valves and MP template ported
Holley Street Dominator
Holley 750
MP .557 cam/Isky Rockers
10" B & M Converter
4.10's with a 28" McReary dirt track tire
1972, all steel/OE glass Duster
Fenderwell headers with shorty muffs...

Easy low 11.80's, best of 11.68 in mineshaft air.
Posted By: viperblue72

Re: 77 440 build - 03/06/13 09:19 AM

I just put 440source heads, rpm intake, xe274 cam on a smogger 440. I expect it to run low 12s in a cuda
Posted By: viperblue72

Re: 77 440 build - 03/06/13 09:21 AM

Quote:

i wonder how good the xe268 would sound in my 383?any one have videos of that?



A 268 cam doesn't really have a notable lope. But it would run good.
Posted By: DaytonaTurbo

Re: 77 440 build - 03/07/13 12:09 AM

Quote:

i wonder how good the xe268 would sound in my 383?any one have videos of that?



There are videos on youtube of xe268 383's. I remember watching at least one from a member here. That cam sounded decent in a 383.
Posted By: DaytonaTurbo

Re: 77 440 build - 03/07/13 12:09 AM

Quote:

WELL THE SUMMIT 488 CAM IS FROM 2000 TO 5500 AND THE XE268 IS 1600 TO 5800 AND IT SHOULD NOT NEED A HIGER STALL IT STATES LARGEST CAM FOR STOCK CONVERTER AND I REALLY LIKE THE WAY IT SOUNDS,THE 383 IS PRETTY NASTY INSIDE IT DOES RUN GOOD THOUGH,GOOD OIL PRESSURE AND DOESNT GET HOTTER THAN 190 (SO FAR).IM STILL DEBATING IF I SHOULD REBUILD A 440 OR JUST ADD A FEW THINGS TO THE 383.ITS HARD BECAUSE THIS CAR WEIGHTS 5000LBS IM SURE AND EVEN IF IT HAD 500 HP IT PROBABLY WOULDNT BREAK 13'S LOL.AND FOR THE HUGHES WHIPLASH CAM I HAD ONE FOR THE 67 DART GT I SOLD AND NOW WISH I WOULDNT HAVE SOLD MY 440 SHORTBLOCK I BUILT .



Hell, with those smogger pistons, even a STOCK cam wants more converter stall! If you insist on using that smogger short block, DO NOT run a stock converter.
Posted By: dragduster71

Re: 77 440 build - 03/07/13 01:26 AM

ill have to double check youtube for a 383 with a xe268.there is a 66 newyorker with a xe268 cam in a 7.2 compression 440 it has a nice lope to it.from what i understand a smaller engine will sound more radical with the same cam then a bigger engine would(for instance this same cam for a small block says 340 and 360 hp upgrde and it states will have a chop with a 318)
Posted By: Mr.Yuck

Re: 77 440 build - 03/07/13 03:31 PM

who cares what a cam sounds like.. get a cam in the thing that will make it run.
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