Buick Grand National Racing Block - Stage 2 -153 On Center Block

This block is for someone who races, and looking for 1500+ horsepower. The previous owner of the block bored it out to 4.020 and used it for Circle Track Racing with naturally aspirated pistons. This same block could be used for your drag racing application. We'd suggest taking the cylinders out another .005 to .010 to really clean up the cross hatch, and order a set of custom Turbocharged pistons. 

The Details: On Center Stage 2 Block with 4.020 Bore. This block has been Magnafluxed. The mains are good. Deck Height is 9.490. Lifter Bores have been bushed with .841 brass sleeves. Cross Hatch is ok. Needs minor work to be finalized. 

Things To Note: The pan rail has been machined. (unknown reason) Besides that everything else appears fine. 

🟡Yellow Dot: Perfect for the adventurous! These parts worked when we pulled them, but the backstory (like part numbers) is a bit of a mystery. Buyer discretion advised. Please submit questions and make sure that this application will work for your needs. Any Questions, send an email to sales@wattsperformance.com