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Or, try this set-up---
400 block (GM #24502600 with 4.125" bore)
307/327 crank (3.25" stroke - Callies, Lunati, Cola, or Scat)
6.25" rods (many makers)
Pistons with 1.15 or 1.25" compression height in your choice of compression ratio (I can't remember the exact height)
Fast-Burn, AFR 195's, or Edelbrock 170 E-tec heads
With a GM HOT cam package this will make 480-495 hp.
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