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BIG BLOCK Crate Engine Special ZZ572/720 720 HP 12:1 Compression Race Engine Call us toll-free at 1-800-926-4977 ext. 1232 (or 330-792-5258) between 7:30 a.m. and 9 p.m. EST Monday through Friday and 8 a.m. 'til 4 p.m. Saturdays about this exclusive Greenwood Chevy Performance Parts special!  GM’s most powerful Street engine ever produced will make your Street Rod or Muscle Car the envy of the neighborhood. The ZZ572/720Ris built around an all-new Gen VI tall deck race block, filled with a forged, 4340 steel, 4.375” stroke crankshaft, shot-peened forged 4340 H-Beam rods, and forged aluminum pistons with full floating wrist pins. Plasma moly piston rings are standard is the screened and louvered windage tray. GM's first purpose built drag race engine is filled with hard core race parts for hard core performance and long term durability.  The newly redesigned rectangular port aluminum cylinder heads result in a race gas only 12:1 compression ratio. A solid roller cam with .714” lift actuates the stainless steel valves. And, of course, hardened chromemoly retainers, roller rocker arms, and dual valve springs are used to complete the valve train. The new GM tall deck single-plane intake manifold and a 1095cfm King Demon carburetor deliver enough air an dfuel to make 720 horsepower at 6250 RPM and 685 ft.lbs. of torque at 4500 RPM. Ignition is handled by a multiple spark discharge ignition. And an SFI approved torsional damper is installed at the factory. Horsepower 720 @ 6250 RPM Torque 685 Ft. Lbs. @ 4500 RPM Max. Recommended RPM 6750 RPM Compression Ratio 12:1 Block New! Sportsman Tall Deck Bow Tie Gen VI, 10.200”  Deck Height Bore 4.560” Stroke 4.375” Crankshaft Forged 4340 steel Connecting Rods Forged 4340 steel, H-beam style, Shot peened Pistons Forged Aluminum, Full Floating Wrist Pin Piston Rings Plasma-moly rings Camshaft Mechanical roller (Valve lift: .714” I, .714” E;  Duration @ .050” 266° I, 274° E) Lifters Mechanical roller tappet Cylinder Heads Aluminum rectangular port, 118cc combustion chamber Intake Valves 2.25” Stainless steel Exhaust Valves 1.88” Stainless steel Valve Springs Dual valve springs, 1.567” coil dia., 2.050” installed height, 230 Lbs. seat pressure Spring Retainers Hardened chromemoly steel Rocker Arms Aluminum roller rockers, 1.7:1 ratio Push Rods High performance one piece Intake Manifold New! Aluminum tall deck single plane, 4500 series carburetor. Carburetor 1095cfm, mechanical secondary Rear Main Seal New! One-piece design Windage Tray New! Screened and louvered Damper High RPM torsional damper Distributor Multiple spark discharge Ignition Timing 36° total advance Spark Plugs R42XLS Fuel Race Part number #12498827 COMPLETE ENGINE $14,150.00 Part number #12498826 LONG BLOCK $12,998.00 Part number #12498825 PARTIAL    $7,995.00 * Price subject to change without notice GM PARTS WARRANTY INFORMATION: Due to the nature and intended usage of GM Performance Parts, the parts available on this website and in our walk-in store (except for engines and partial engines) are sold without any express or implied warranty of merchantability or fitness for a particular purpose. The entire risk as to the performance of such parts is with the buyer. Should such parts prove defective following their purchase, the buyer and not the manufacturer, distributor, or retailer, assumes the entire cost of all necessary servicing, repair, damage or loss to property and consequential damage. "Engine and Partial Engine Warranty" under the provisions of the General Motors Dealer Service Parts and Accessories Warranty Section 1.1.3a, engines and partial engines, including partial engines in kits, are warranted against defects in materials and workmanship. This warranty specifically excludes engines and partial engines used in racing or competition or that fail as a result of alteration. These engines and partial engines are not designed or approved by General Motors for marine use. Installation of GM Performance Parts may adversely affect GM New Vehicle Warranty. Please consult your dealer for terms and conditions.   Welcome to Greenwood Chevrolet -Parts and Pro-shop: Looking for GM Performance parts, aftermarket performance parts,  crate engine motors, and intakes. Browse the largest inventory of GM Parts, GM Performance parts, Chevy Parts, engines, crate engines, warranty, performance, restoration parts, partial engines,  performance parts, engine specials, accessories, motors, crate engine specials,  crate engine prices, Chevy crate,  Chevy, crate engine, 350 engine on the web. We can special order, accessories for any make and model of gm vehicle, and much more, shop online, call or stop in and see us. Greenwood HUMMER   Greenwood Hubbard Chevrolet   Cobalt Capitol