540-Inch Big-Block Chevy Makes Nearly 1,000 HP At 7,400 RPM On The Dyno Westech Dyno Tests a 540-Inch Big-Block High-Compression Chevy That Made Nearly 1,000 HP At 7,400 RPM.
Rod Bower's S51 is a 70 percent scale replica of a P-51 Mustang fighter. Its engine? An all-aluminum 540 big-block Chevy.