Reply With QuoteDamn!
Here are some more specs i found on this engine. the price on a long block for the 620 hp is $10.600 less carb, distributor, water pump,and intake.the price is getting better. GM聮s most powerful. The ZZ572/620 is built around an all-new Gen VI tall deck race block, filled with a forged, 4340 steel, 4.375聰 stroke crankshaft, shot-peened rods, and forged aluminum pistons. The newly redesigned rectangular port aluminum cylinder heads result in a pump gas friendly 9.6:1 compression ratio. Also included is a .632聰 lift, hydraulic roller camshaft, roller rockers, dual valve springs, 620hp and 650 ft. lbs. of torque! ZZ572 / 620 Technical Information 路HP: 620 @ 5500 RPM 路Torque: 650 Ft. Lbs. @ 4500 RPM 路Compression Ratio: 9.6:1 路Bore: 4.560聰 路Stroke: 4.375聰 路Block: Bowtie Tall Deck with One-piece rear seal 路Crankshaft: Forged 4340 Steel 路Connecting Rods: Forged 4340 Steel, H-Beam style, Shot peened 路Pistons: Forged aluminum with full floating wrist pin 路Piston Rings: Plasma-moly rings 路Camshaft: Hydraulic roller (.632聰 / .632聰 lift) (254 / 264 duration @ .050聰) 路Lifters: Hydraulic Roller tappet 路Cylinder Heads: Aluminum Rectangular Port with a 118cc combustion chamber 路Intake Valves: 2.25聰 Stainless Steel 路Exhaust Valves: 1.88聰 Stainless Steel 路Valve Springs: Dual spring (1.540聰 diameter) 路Spring Retainers: Hardened chromemoly steel 路Rocker Arms: Aluminum Roller Rockers, 1.7:1 ratio 路Push Rods: High Performance (1-piece) 路Intake Manifold: Aluminum Tall Deck single plane 路Windage Tray: All new Screened and Louvered design 路Damper: High RPM torsional damper 路Fuel: 92 Octane
Damn!
Spend 3K on an Accel DFI or RamJet fuel injection system and 2K on headers and you have a 650HP turn key engine that would cost you 30K at Pfaff or Teague.That torque curve is perfect for a jet,I think I know which engine will be in my next boat!!
its good to know that there is now some other options to buying a engine other than mercruiser or the high dollar custom motors.
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