Quote:
Originally Posted by NHRASuperStock455SD
Tom,
I have a new idea for a crate motor. How about a 4.9L short deck with RA-V and a Turbo to replace the motors that came in the 1980 Pace Car? I think it could make serious HP and with a 4-spd 4L-85 with locking converter like what was in Pontiac magazine last month. I think it could get about 20 mpg highway and can be very streetable. My son who is into all this blown stuff says the turbo lag would be a problem. I know the turbo would need reconfigured, but what are your initial thoughts? I think that 4.9 Turbo was one of the coolest cars Pontiac ever made. My buddy mildly reconfigured a stock one with a stock short block and set the record with it in stock eliminator with a very low 12 second quarter.
Lynn
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1) I like short deck engines when using short strokes/ small cid.
2) Lots of turbo knowledge on 4.9L-5.0L engines.
3) RA-V Port would not be as big of an issue with the right turbos selected (FOR A STREET APPLICATION). You would want boost at 1500 rpm.
4) EFI would be nice as you can improve drivability a lot with the right efi calibrator (Travis Q) and the right parts designed for a street car.
Assume 650 HP. I drove a 4.6L Boosted engine with 4 valve Cobra R ports (with over 600 hp) for 3 years on the street.
Tom Vaught