Description
BluePrint Engines SB Chevy Compatible 4 Bolt Main, 2 Piece Siamese Bare Block.
New, old stock. This is an older/earlier casting from BluePrint Engines. These blocks are being sold because they only build 1 piece rear main seal engines now.
Sold as is. All sales final. No warranty. No returns.
Shipping to lower 48 United States ONLY.
Some machine work will be required (blocks will need to be align honed and cylinders finish honed).
Most of the other machine work should be complete.
– Cylinders have a rough bore, but are ready to be finish honed to a maximum of 4.250 to make a 454 CID small block. Current bore is just shy of that, leaving room for the finish hone.
– 400 Mains.
