Quote Originally Posted by 1970chevstepper View Post
I've recently bought a 1970 chev stepside Pickup and I want to upgrade the drive train it's got the stock 307 I'm torn between a 383 stroked and a 427 big block any input
yep take the 3.756 crank out put a 4.250 or 4.375 in the427 block and get a 489to 510 .if a tall deck 10.200 deck bock throw a 4.500 crank in the block and get a 526to 541 and use a sbc for a starter

doing many of them rats right now... i know thats easy one for me