19434240 Big Block Chevy 502, Gen VI Bare Block, Replaces 19170540, 10237292, 14096817

This Gen VI cast iron block is a strong foundation for a big-block engine project. The "short-deck" block was designed to meet the needs of a powerful and dependable 500cid engine for street or boat usage.

The block's cylinder walls are "siamesed" and are bored to 4.47". The deck surfaces are reinforced to improve the head gasket sealing. Four-bolt main bearing caps are installed to reinforce cylinder barrels and add strength to the bottom end.

Note: The distance from the crankshaft centerline to the deck surfaces is 9.80". It is used on 502 engines assembly, and partial engine. and can use roller tappet or stndard tappet. Casting P/N 10237300. Maximum over bore is 4.500".

Technical Notes:

• New design casting incorporates the best designs of Mark IV and Gen VI
• Production-type cast-iron 4-bolt block
• Machined fuel pump pad
• Water jackets for use with Mark IV or Gen VI heads
• Revised oiling to allow for bigger cam bearings/cam lift
• Can be drilled for use with 10-bolt front timing cover
• Additional clearance added for roller timing chains
• Auxiliary oil pressure line added to front of block
• Racing-style oil filter cast feature with added oil pressure port
• Additional material added around lifter bosses
• Improved main bearing bulkheads
• Bowtie block-style bulkhead
• Clearanced for bigger strokes
• 4.470" finished bore
• 4.500" max bore (siamese)
• Bolt boss (machined) added near distributor hole like 8.1L
• Two bosses added for manual transmission clutch pivot (machined)