Chevrolet Performance ZZ6 EFI Turnkey Crate Engines

Chevrolet Performance ZZ6 EFI Turnkey crate engines build on more than 65 years of small block heritage and the legacy of the pioneering "ZZ" crate engine family to offer thoroughly modern performance balanced with traditional style. The engineers adapted a unique, electronically controlled port fuel injection system to the ZZ6 350, using an aluminum intake manifold that has the appearance of a carbureted intake. A fuel injection throttle body mounted in place of the carburetor allows a traditional air cleaner to be installed. The result is a great, traditional appearance and all the drivability advantage of EFI on the highway. A simple plug-and-play control system rounds out the package to get the engine running in your project without the need for third-party tuning. These Turnkey crate engine kits include the distributor and damper installed. The throttle body, air conditioning pump, alternator, single-belt front-end accessory drive kit, and more are also included. Installation notes: * Crate engine kit includes pre-programmed, self-learning control system * Comes with 12.750 in. externally balanced 153-tooth automatic transmission flexplate. Requires externally balanced flywheel for manual transmission. * Not intended for marine applications. SPECIFICATIONS: Engine Type: Chevy Small Block V8 420 hp at 5800 rpm 408 lb.-ft. at 4500 rpm Displacement (cu. in.): 350 Bore x Stroke (in.): 4.000 x 3.480 Block: Cast iron with 4-bolt main caps Crankshaft: Forged steel, shot peened Connecting Rods: Forged powdered metal Pistons: Hypereutectic aluminum Camshaft Type: Steel hydraulic roller Valve Lift (in.): .474 intake / .510 exhaust Camshaft Duration (at .050 in.): 208 degree intake / 221 degree exhaust Cylinder Heads: Fast Burn aluminum; 62cc chambers Valve Size (in.): 2.000 intake / 1.550 exhaust Compression ratio: 9.72:1 nominal Rocker Arms: Aluminum; roller-style Rocker Arm Ratio: 1.5:1 Recommended Fuel: Premium pump Ignition Timing: 36 degree total at 4,000 rpm Maximum Recommended RPM: 5,800 Balanced: External Flexplate: 12.750 in. Show Less