Quote:
Originally Posted by JUDGE3
Thanks scarebird, the goal is to keep it a Turbocharged car though.
Iv'e since found "TTA PERFORMANCE" having a lot of the Turbo 301 parts and services. many are nice mods. was surprised they dyno tested a 301 rebuild to 354hp @ 4500rpm and 511 lb/ft torque @ 3,000 rpm. I'm not even after that much. just an improvement to the 301 will be fine with me. prefer to keep it pontiac.
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My primary automotive engineering professor at GMI was Jim Lyons, the guy who later headed up the turbo 301 development at Pontiac. The weak link in the engine is the crankshaft with the "safe" limits being under 280 HP and 425 Lb Ft of torque for the stock unit. Anything above that and you could expect to bend the crank or develop cracks at the flexplate flange. After I graduated, some students managed to get a billet crank engine with forged internals for development purposes (of course), and were pushing it to 500 HP. That crank had counterweights though.