355 HP 405 Torque Turn Key

As far as crate engines go, this one is a winner. The ZZ4 350 Turn-Key crate engine has been one of our most popular high performance crate engines

As far as crate engines go, this one is a winner. The ZZ4 350 Turn-Key crate engine has been one of our most popular high performance crate engines since we started GM Performance Parts. Its legendary status is based on an incredible performance level that is stone cold reliable. We’ve packed the ZZ4 350 crate engine with a forged steel crankshaft. hypereutectic pistons, hydraulic roller camshaft and lifters, and aluminum cylinder heads. The ZZ4’s Corvette-derived high-performance heads feature high velocity intake runners and D-shaped exhaust ports to promote efficient and unobstructed flow through the engine providing strong power and torque at all RPM levels. The ZZ4 350 is delivered with an aluminum dual-plane intake manifold, HEI distributor, cast iron water pump, damper, and flexplate. Our Turn-Key ZZ4 350 crate engine also ships with all the parts you need to get it running. That includes an accessory drive package, fuel pump, chrome air cleaner kit, Holley 750-cfm carburetor, starter, and spark plug wires. The ZZ4 comes to you with full 355 horsepower and 405 lb.-ft of torque. With its high level of performance and durability, it could very well be the perfect crate engine-able to meet the needs of car builders from all phases of the motor-sports world. ZZ4 Technical Information Horsepower 355 @ 5250 RPM Torque 405 @ 3500 RPM Max. Recommended RPM 5800 Compression Ratio 10:1 Block 10105123 Four bolt main, cast iron Crankshaft 12556307 Forged steel Connecting Rods 10108688 PM rods Pistons 10159436 High Silicon aluminum with offset pins Piston Rings 12528817 Camshaft 10185071 Hydraulic roller Lift .47" I, .510" E. Duration @ .050:208º I, .221º E. Intake Manifold 10185063 aluminum dual plane Distributor 1104067 HEI Cylinder Heads 12556463 Aluminum 58cc combustion chambers Intake Valves 10168465 1.94" Exhaust Valves 10168514 1.50" Valve Springs 12551483 LT4 chrome silicon Rocker Arms 10089648 1.5 ratio Valve Lash Zero Spark Plugs FR5LS Gap .035 RapidFire #5 Gap .045 Fuel 92 Octane Ignition Timing 10 BTDC @ 4000 RPM 32º total @4000 RPM with vacuum advance disconnected Technical Notes: Carburetor, spark plug wires, starter, oil filter and oil filter adapter, and exhaust manifolds not included. Distributor P/N 1104067 or melonized distributor gear P/N 10456413 must be used on all crate engines with steel camshafts.