GM Performance LSX Block 9.260" Standard Deck 3.880" Bore 4.250" Max Stroke Part# 19417351
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
