Bare Block Bore
#4
Thanks for the replies guys, I did some searches but all I could find was a rough dimension of 4". I wasn't sure if the blocks came prehoned from the factory for a certain size piston.
#7
10 Second Truck Club
iTrader: (25)
I have built several using the block just like it came from GM. I checked the bores on everyone with a bore gauge that had .0001" accrucy. The most I have found one off was .0002" under the 4.00" and were good from top to bottom. I have found some iron blocks .0004" under. Their hone is as good as you get also. But do have it checked and check your pistons also. I ran across a new set of forged pistons recently that had one way off on diameter.
Trending Topics
#8
Moderator
iTrader: (20)
Boring is usually reserved for taking out alot of material, as in going from a 4" bore to a 4.030" bore. Honing will take care of a few thou.