about

Features And Benefits

The LSR aluminum engine block is cast of a proprietary 356 T6 Aluminum Ingot, featuring Spun Ductile Iron Sleeves. The standard deck 9.240" and the tall deck 9.720", with or without raised cam.

Reinforced from Top to Bottom...​

LSR

Reinforced from top to bottom. Features like added cross bracing in the lifter valley, maximized crankshaft saddle radius and a 40% larger footprint for our main cap contact surface to the skirt wall means the LSR is built for maximum performance.

100% MADE IN THE U.S.A

Concept Performance prides itself in providing quality products that are 100% cast, machined, and assembled in the United States of America. More specifically, right here in the U.S Midwest.