Originally Posted by garyk
Im rebuilding my 390. Im using a 428 crank & rods. Im also using the 410 piston. My question is how close is the 410 piston to the 390. And to get 10.0:1 to 10.5:1 compression would i need to go with flat pistons?
from memory i thought putting a 428 crank in made it a 410ci motor
mind you its been a few years since i have built a 390, the standard flat top pistons that the 390's came with were 10:1 if this helps
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