Quote Originally Posted by Dave Severson
Why all that for the small bore 305?? Doubt you can bore it more then .060... Get a 350 block so you at least have some cubes. The 400 crank in a 350 block I think makes a 377, the chebbie guys will fill you in on the details. What is a 6 bolt????
YOU GOT THAT BACKWARDS. A 400 CRANK IN A 350 BLOCK IS 383

A 350 CRANK IN A 400 BLOCK IS 377.

DONT WASTE YOUR TIME ON A 305.

6-BOLT??? LS1'S ARE 6-BOLTS