Building 383 - Team Camaro Tech
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post #1 of 7 (permalink) Old Mar 31st, 04, 04:03 AM Thread Starter
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Ok people at the piont of building my 383. Ist in the shop flat top pistons AFR 195 machined to 64cc,750 carb,350 auto trans right now 390 gear will have to change later to 355s looking for about 430 hp and 400plus torge would like lunati cam like to use roller lifters roller rocker arms Was told needed a distributor with vacume advance and headers what size 1/5.8 ?With fire wall do they make a distributor Small cap with vacumme advance.How much stall do I need 3000?Street diven daily once a year track. I have power brakes too.what headers fit AFR.
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post #2 of 7 (permalink) Old Mar 31st, 04, 04:28 AM
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Greg
 
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Watch out on the compression..I assumed .041 gasket, 0 deck and 7cc valve reliefs and came up with 10.85 to 1. It sounds like you are looking for a smallish duration torque cam so detonation may become an issue.

With those heads, cubes and a roller cam you are going to be way beyond your HP and torque goals with NO problem. AFR's web site has a dyno sheet on a 383 with the Comp 280 magnum cam that made 460 HP and 500+ ft./lb of torque!

I used to run a 406 with AFR 195's, an 11" 2700 torque converter, Performer RPM cam and intake and 1 5/8" Hedman headers. It was a great running combo but I didn't drive it daily nor have power brakes but I thought it was very streetable (the converter for sure). It pulled about 11" of vacuum.

You might want to look at a bit smaller cam like the Comp XE 268 or 274 flat tappet and the smaller XE hydraulic roller line. Not sure of the part numbers but anything in the 22X to low 23X duration at .05 would be awesome!

69 Camaro, 3650lbs., 400ci, TH400, Coan 10" converter, 3.50 gear
D1SC, pump gas, 9:1, 10 PSI, Water/Meth injection
1.325 60', 5.988 @ 115.4 (carb)
Switched to Super Sniper EFI 2019
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post #3 of 7 (permalink) Old Mar 31st, 04, 06:00 AM
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Ditto . . . flat tops and 64cc heads makes over 11:1 -- not good for a daily driver. If you are using the AFR heads on a 383 see if you can get them with 72cc chambers. That will give you 10:1 compression, a good place to be with pump gas and a streetable cam.

E85 racer and E85 carb builder

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68 Camaro, E85 powered 427" small block. 9.96 @ 133 MPH, 1.319 sixty foot on motor. 5.92 eighth @ 116 with a 1.42 sixty breaking beams with back tire on the bottle
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post #4 of 7 (permalink) Old Mar 31st, 04, 07:02 AM
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I have a 383 in my camaro. It is with Edelbrock performer RPMs, and custom dished JE Pistons. Still needs to run on premium though, (91 octane here) My motor is putting out more than 430hp I believe. This is my cam, Crower cams 224HR232 hydraulic roller (INTAKE: Duration: 286º, EXHAUST: Duration: 294º, INTAKE: Lift: 0.519, EXHAUST: Lift: 0.54, LOBE SEPERATION 114º) With 1.52 ratio roller rockers.
And my heads are fully ported, dual springs etc etc. You say you are gonna be running AFR's. Those are a much better head than what I have got, so you should be quite beyond 430hp.

<a href="http://atlas.walagata.com/w/artfuldodgerv2/AAAA0017.JPG" target="_blank">68 RS</a> : 383, performer RPM heads, Victor Jr. Intake, Holley 780 DP, Crower 224HR232, 700R4 trans, 4.56:1 10 bolt. - driven every day
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post #5 of 7 (permalink) Old Mar 31st, 04, 08:50 AM Thread Starter
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Hey Eric the heads come 68cc are you say I should leave them like that?I though I was told to get to 10.5.1 to save the heads shave to 64cc.68cc would be some where in the 9.5.1 range? With that set up flat tops and 195s , {I order them today} What about a magnum comp cam 286h what will that run like on the street?Will I have any vacumm for brakes? Drivibilty?
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post #6 of 7 (permalink) Old Mar 31st, 04, 10:32 AM
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Greg
 
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Flat tops and 64cc heads is the formula for a 9.5:1 350 I think. The longer stroke of a 383 changes the equation.

You can go to the car math section of www.prestage.com and play around a bit to come up with what you need. There is a nice CR calculator there.

With 68cc heads you are still looking at 10.38:1. To get to 9.5 with a 3.75 stroke you just about have to go with a dished piston.

You can play around with gasket thickness and deck height as well.

69 Camaro, 3650lbs., 400ci, TH400, Coan 10" converter, 3.50 gear
D1SC, pump gas, 9:1, 10 PSI, Water/Meth injection
1.325 60', 5.988 @ 115.4 (carb)
Switched to Super Sniper EFI 2019
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post #7 of 7 (permalink) Old Mar 31st, 04, 10:32 AM
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Eric
 
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With a 286* cam you will be OK with the 68's. Like you said 68s will make 10.5:1 with flat tops.

On a daily driver I typically assume small cam which means less compression. Since your cam is a little bigger you'll be OK with another .5 point of compression.

Power brakes will be a little stiffer than stock, but should work OK. But that is more a matter of opinion -- what I feel is OK others may not like at all. Shoot I think my power brakes are fine and I'm running a 294* cam with 8" of vacuum.

E85 racer and E85 carb builder

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68 Camaro, E85 powered 427" small block. 9.96 @ 133 MPH, 1.319 sixty foot on motor. 5.92 eighth @ 116 with a 1.42 sixty breaking beams with back tire on the bottle
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