GM Performance Engine Block, Cast Iron, 4-Bolt Mains, 4.240 in. Diameter Bore, 2-Piece Rear Seal, Chevy, Big Block Mark IV (PART #GMP-19212196)

These are the blocks to buy if you want to build a serious street car or if you want to head to the race track! GM Performance Bowtie Sportsman blocks have been the starting point for countless racing engines. These iron blocks are available in a variety of finish options to build almost any engine combination. Most of these blocks have siamesed cylinder walls and 4-bolt main caps that are secured by Grade 8 bolts. All blocks in this family have a 9.025 in. deck height. The Bowtie Sportsman blocks are a great foundation for your serious street car, circle track, or drag car that makes between 350 and 500 hp.

SPECIFICATIONS
Brand GM Performance
Manufacturer's Part Number 19212196
Part Type Engines, Bare Blocks
Product Line GM Performance Bowtie Sportsman Race Blocks
Main Journal Type Chevy 454
Engine Block Material Cast iron
Engine Block Style OEM
Engine Block Deck Height Standard deck
Deck Height (in.) 9.800 in.
Cylinder Bore as Shipped 4.240 in.
Cylinder Bore Diameter 4.250 in.
Maximum Bore Diameter (in.) 4.600
Camshaft Location Standard
Engine Block Weight (lbs.) 281 lbs.
Main Bolt Style 4-bolt
Main Caps Included Yes
Main Cap Material Steel
Main Cap Fasteners Included Yes
Main Bearings Included No
Rear Main Seal Style 2-piece
Finished Cylinder Bores Yes
Raised Cam Location No
Cam Bearings Included No
Freeze Plugs Included No
Remanufactured No
Quantity Sold individually.
Notes Lifter bosses are .300 in. taller than standard blocks. Tested to 1,200 horsepower.

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