Engine Blocks

RHS LS 9.240" Standard Deck 4.120" Bore Aluminum Race Block 54903U Block Specifications Designed from heavy-duty A357-T6 aluminum material 3.895”-4.165” siamese cast bore walls w/ press-in spun cast iron liner Available in standard (9...

RHS LS 9.750" Tall Deck 4.120" Bore Aluminum Race Block 54901U Block Specifications Designed from heavy-duty A357-T6 aluminum material 4.125”-4.165” siamese cast bore walls w/ press-in spun cast iron liner Available in standard (9...

LSR Standard Deck Aluminum Race Block LSR-SD10X The NEW LSR (R = Reinforced) Aluminum Standard Deck Race Blocks are 100% American made and come semi-finished with a 9.245" deck and as standard 4.117" rough bore size. The block is cast with...