ZZ572/720R Deluxe

• R stands for RACE!
• Designed to RACE!
• Orange just looks fast!

When our GM Performance Parts engineers sat down and designed the ZZ572/720R, we told them to build something nasty. We think they accomplished that mission with a resounding 720 horsepower and 685 lb.-ft. of torque, creating at the same time the most powerful big-block crate engine ever offered by GM Performance Parts.
We took the ultra-popular ZZ572/620 pump gas street engine added 12:1 compression pistons, a hotter camshaft, and our rectangular-port aluminum Bowtie heads with stiffer valve springs to work with the new cam. The block is the Gen VI tall-deck Bowtie block which was designed for the 572" application. The solid roller camshaft is a .714" lift magic maker that aggressively feeds the air/fuel mixture into the hungry, high-squeeze, stroker big-block.
The ZZ572/720R is rated at 720 horsepower at 6250 rpm and 685 lb.-ft. of gut-wrenching torque at 4500 rpm. The short block is built with a 4340 forged steel crankshaft, shot-peened forged steel rods, forged aluminum pistons with full-floating wrist pins, stiff dual valve springs, and a louvered oiling windage tray. Our Deluxe ZZ572/720R ships with a 1090-cfm Demon four-barrel carburetor, tall-deck single-plane intake manifold, HEI distributor, aluminum short-style water pump, and 8 mm spark plug wires. Distinctive ‘572’ cast aluminum valve covers complete the package. All you need is a GM Performance Parts lightweight starter to fire it up!