Description: The ZZ4 needs no introduction; as GMs most popular crate engine the ZZ4 offers a combination of performance quality and reliability that has made it the only choice for many of todays Hot Rodders. Just imagine a small block with 4-bolt mains a forged steel crankshaft powdered metal connecting rods and 10:1 hypereutectic pistons with offset pins. Throw in a(more)

Description: The ZZ4 needs no introduction; as GMs most popular crate engine the ZZ4 offers a combination of performance quality and reliability that has made it the only choice for many of todays Hot Rodders. Just imagine a small block with 4-bolt mains a forged steel crankshaft powdered metal connecting rods and 10:1 hypereutectic pistons with offset pins. Throw in a steel roller camshaft (.474 in. intake/.510 in. exhaust lift and 208 degrees intake/221 degrees exhaust duration at .050 in.) and top it off with 58cc aluminum cylinder heads with 1.94 in. intake/1.50 in. exhaust valves and LT4 chrome silicon valve springs a GM aluminum dual-plane intake manifold HEI distributor cast iron water pump 8 in. harmonic balancer and automatic transmission flexplate. All together this combo makes 355 HP at 5250 rpm and 405 ft.-lbs. of torque at 3500 rpm. So stop dreaming about it and make the purchase--reality is only a few keystrokes away.(minimize)