Availability

ATK High Performance Chevy 377 Stroker Short Blocks

Not Yet Reviewed

Looking to upgrade your old engine using your existing heads? ATK high performance Chevy 377 Stroker short blocks use a 100 percent new American-made cast iron bloc

Looking to upgrade your old engine using your existing heads? ATK high performance Chevy 377 Stroker short blocks use a 100 percent new American-made cast iron block outfitted with a Scat crank kit. All the hard work is done, you just need to finish it off. These crate engines are available with forged H-beam or I-beam connecting rods; dish top or flat top pistons; forged 4340 steel or nodular iron crankshaft; and other options. Note: Performance short blocks are based on dyno-proven combinations built with name brand parts. Stroker engine built over size of stock stroke. Short block strapped and shipped on woode

Looking to upgrade your old engine using your existing heads? ATK high performance Chevy 377 Stroker short blocks use a 100 percent new American-made cast iron block outfitted with a Scat crank kit. All the hard work is done, you just need to finish it off. These crate engines are available with forged H-beam or I-beam connecting rods; dish top or flat top pistons; forged 4340 steel or nodular iron crankshaft; and other options. Note: Performance short blocks are based on dyno-proven combinations built with name brand parts. Stroker engine built over size of stock stroke. Short block strapped and shipped on wooden pallet crate.

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ATK High Performance Chevy 377 Stroker Short Blocks SP15NB

CHEVY 377 STROKER SHORT BLOCK

Part Number: HPE-SP15NB

Not Yet Reviewed

Estimated Ship Date: Dec 19, 2025 if ordered today

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Estimated Ship Date: Dec 19, 2025 if ordered today

ATK High Performance Chevy 377 Stroker Short Blocks SP52NB

Engine, New Short Block, 377 CI,Cast Iron, 4.0 Bore, 3.750 Stroke, Forged I Beam Rod, Forged Aluminum Flat Top Pistons, Internal Balanced, Chevy, Each

Part Number: HPE-SP52NB

Not Yet Reviewed

Estimated Ship Date: Dec 15, 2025 if ordered today

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Estimated Ship Date: Dec 15, 2025 if ordered today

ATK High Performance Chevy 377 Stroker Short Blocks SP53NB

Engine, New Short Block, 377 CI,Cast Iron, 4.0 Bore, 3.750 Stroke, Forged H Beam Rod, Forged Aluminum Flat Top Pistons, Internal Balanced, Chevy, Each

Part Number: HPE-SP53NB

Not Yet Reviewed

Estimated Ship Date: Dec 19, 2025 if ordered today

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Estimated Ship Date: Dec 19, 2025 if ordered today

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