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Maybe this has already been covered, but, I was at gmpartsdirect.com searching for multiple parts and THIS showed up in my query. I didn't search for it specifically....maybe it's trying to tell me I need this or something.....very nonetheless.....anyone need one? I heard these puppies make closer to 700 hp. They have a street and a rowdy version (big solid lifter cam) of this engine. As usual, GM is underrating this one. Is this wild or what? This is the puny "street" version. Here's the description... just add oil and gas...
quote:GM PART # * CATEGORY: Eng Asm-(must provide commercial shipping address) PACK QTY: 1 CORE CHARGE: $0.00 GM LIST: $15,000.00 OUR PRICE: $10,749.95 DESCRIPTION: 572 Long Block (620 HP Verison) The ZZ572/620 is built around an all-new Gen VI tall deck race block, filled with a forged, 4340 steel, 4.375” 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” lift, hydraulic roller camshaft, roller rockers, dual valve springs, single-plane intake manifold, and an 850cfm Demon carburetor. A GM HEI ignition feeds the ZZ572/620 all the electricity it needs to yield 620hp and 650 ft. lbs. of torque! ZZ572 / 620 Technical Information ·HP: 620 @ 5500 RPM ·Torque: 650 Ft. Lbs. @ 4500 RPM ·Compression Ratio: 9.6:1 ·Bore: 4.560” ·Stroke: 4.375” ·Block: Bowtie Tall Deck with One-piece rear seal ·Crankshaft: Forged 4340 Steel ·Connecting Rods: Forged 4340 Steel, H-Beam style, Shot peened ·Pistons: Forged aluminum with full floating wrist pin ·Piston Rings: Plasma-moly rings ·Camshaft: Hydraulic roller (.632” / .632” lift) (254 / 264 duration @ .050”) ·Lifters: Hydraulic Roller tappet ·Cylinder Heads: Aluminum Rectangular Port with a 118cc combustion chamber ·Intake Valves: 2.25” Stainless Steel ·Exhaust Valves: 1.88” Stainless Steel ·Valve Springs: Dual spring (1.540” diameter) ·Spring Retainers: Hardened chromemoly steel ·Rocker Arms: Aluminum Roller Rockers, 1.7:1 ratio ·Push Rods: High Performance (1-piece) ·Windage Tray: All new Screened and Louvered design ·Timing: 36 degrees total advance ·Spark Plugs: R42XLS ·Fuel: 92 Octane
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One thing the listing may have not mentioned is that you may need to refinance your home to buy it! Posts: 5682 | From: Dearborn,Mi. | Registered: Feb 2002
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Dollar for Dollar you can't beat a GM crate motor for performance..... guys that build their own motors are nuts. I prefer to just open a box and slip it in....
-------------------- 2002 SS #5973 Posts: 1045 | From: Seattle, WA | Registered: Nov 2001
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nonetheless.....anyone need one? I heard these puppies make closer to 700 hp. They have a street and a rowdy version (big solid lifter cam) of this engine. As usual, GM is underrating this one. Is this wild or what? This is the puny "street" version. Here's the description... just add oil and gas...![[Smile]](smile.gif)
