could be timing Steve...try 10 and 36 total(its a stroker, right?)
intake/carbed question
Thread Starter
Burning Brakes
Joined: Jun 2004
Posts: 752
Likes: 0
From: richardson tx
intake/carbed question
`90 carb conversion. i think that my intake choice might be the problem. i was able to wot the car tonight on the highway. i had the pedal on the floor and the car was slowly creeping up on 120 befor i let off. i guess it wasnt slowly we`r talking normal seconds i guess. but what has me puzzled is with the super ram i had on it befor i could hit 130-140 in no time with what seemed like half of a pedal left. the intake is an eldbrock torker2 with a holly 750 classic double pumper carb. p.s. i still hate the sr.
Melting Slicks
Joined: Sep 2003
Posts: 3,326
Likes: 1
From: I live at www.domesticlugnuts.com I sleep in PA
Originally Posted by 88espo
sounds like you have way to much jetting. Any smoke?
Also something to look at...
I found on mine, that I was not getting "Full Throttle". I had to modify the bracket for the throttle cable, so it would open all the way.
Mine was to high and to close to the carb.
Instructor
Joined: Mar 2002
Posts: 239
Likes: 0
From: Fredericksburg VA
Originally Posted by steve1ph2
I think that my intake choice might be the problem.
Also, you are using the worst street intake in history combined with a severely oversized carburetor. That carb is for 500HP+ large displacement street engines, or smaller displacement high-RPM engines. The idle system has a "race" calibration to keep rough idling engines running.
You might try a manifold/carb combo like this for sharp street performance:
http://www.holley.com/8121.asp
Look at this graph:
http://www.holley.com/data/Products/...le%20Plane.pdf
I had a 383CID with about that powerband that ran sharp as a razor under all operating conditions with a high-rise dual-plane and a 600CFM Holley vacuum secondary carburetor. It revved straight to 6500RPM no sweat, and got "good" gas mileage.
SBC 383's with well-prepared 200cc heads, 10.5:1 compression, hydraulic roller cam in the 230's, RPM intake and 750cfm vacuum secondary carb will make over 500ft-lbs and 500HP. This is about as much as you can realistically put to the street even with an excellent chassis like the Corvette.
Last edited by HeaderDesign.com; May 2, 2006 at 08:27 PM.
Race Director
Joined: Sep 2003
Posts: 16,838
Likes: 341
From: Database Error Indiana
A 750 Holley with vacuum secondaries works great on a 383. Ran one on a C3 for years. A double pumper may need some tuning but should be do able. Be sure and look at the timing as mentioned above. If you are using vacuum advance, disconnect it when you set the base timing.
That car should fly with the right tune up, good luck.
That car should fly with the right tune up, good luck.
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