CHEVROLET PERFORMANCE ENGINE BLOCK - LSX454 - 9.240" DECK - 4.185" BORE - 19417353

GM Performance LSX 454 Block 9.240" Deck 4.185" Bore Part# 19417353 

These GM Performance LSX Bowtie engine blocks have been designed for the advanced competition engine builder. They feature Siamese cylinder bores and a semi-finished deck height. The Chevrolet Performance LSX Bowtie engine blocks can accept a maximum stroke of 4.250 in., a maximum bore of 4.250 in., and they can support displacements of 454 cu. in. or more. The blocks feature cast iron construction with a powdercoated orange finish. They accept all Gen III and IV LS-style cylinder heads, crankshafts, camshafts, and other components. 

Additional features of the Chevrolet Performance Parts LSX Bowtie engine blocks include:

* Front oil feed lines that can be plugged or restricted for mechanical flat tappet or mechanical lifter applications
* Can be safely machined to 9.200 in. deck height
* 1054 Billet Steel 6-bolt main bearing caps
* 6-bolt cylinder head bolt pattern
* Cam bores that can be machined to accept 60mm roller bearings
* Can be machined for larger diameter lifters
* External oil pump feed at the rear
* Added 7th transmission bolt hole to work with early-style GM transmissions
* Can accept a front motor plate for racing use
* Threaded freeze plugs that can be used for external heaters or coolers
* Windowed main bulkhead