September 13, 2020, 09:17 PM
ellis57Big Block Chevy block
Got a big block says 7.4 on the side,how much can I bore this block
September 14, 2020, 10:00 AM
Floyd StaggsShould be able to bore .100. But a sonic check would be beneficial.
September 14, 2020, 10:13 AM
TD3550Aside from the testing. On some of the older blocks, you have to pay close attention to the internal rust scaling under the deck surface also.
Look closely at all the threaded deck holes.
Seen some that sonic ok and still had core shift.
September 14, 2020, 10:24 AM
Floyd StaggsIt's always a crap shoot on older blocks. They were mass produced and a lot of them.