Inliners International Forums General Discussion Hi Performance Performance Enhancements for a Chevy 250

Snowman,
The stock lower end will take 4-6 PSI and have a good life. There are many variables to consider.

Rpm range Keep it below 5 K and that will help.

Fuel control- run it lean and engine damage is sure to happen

Detonation/ timing control- 5 PSI will not need alot of timing pulled. Step up the boost and controlling the timing becomes extremely critical.

Performance wise 300-400 hp yes, remember , people get stuck on HP #'s, turbo's really are torq producers. Acceleration in 2nd gear will feel like what 1 st gear used to feel like. Tom