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Chevrolet and GM Performance Parts - ZZ572/620, ZZ572/720R Performance Crate Engines
 Chevrolet - ZZ572/620 AND ZZ572/720R GMPP CRATE ENGINES
     GM’s two new 572 big-block engines, one that will be streetable and one that most likely only be seen at shows or on the track. Gm markets these engines under the names of ZZ572/620 for the 620 HP 92 octane fuel version and ZZ572/720R for the 720 HP racing fuel version. This page contains GM’s specs for both engines and pictures of both engines.
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 ZZ572 NAVIGATION
ZZ572 MAIN PAGE ZZ572/620 PICTURES ZZ572/720R PICTURES
  1970 Chevelle ZZ572 Pics  
We have more GM and Chevrolet Performance Engines available.
We have more GM Stock Replacement Long-block Goodwrench Engines available.
We have more “Gen 3” and “Gen 4” Design Engines available. (LS1, LS2, LS6, LQ4, LS7)

 ZZ572/620 DESCRIPTION
     The new ZZ572/620 is built around an all-new Gen VI tall deck Bow Tie cylinder block. This all new race block is filled with a forged 4340 steel crankshaft with 4.375” stroke, shot peened forged 4340 H-beam rods, and forged aluminum pistons with full floating wrist pins. Plasma-moly rings are standard as is the screened and louvered windage tray. Hard core parts for hard core long term durability.
     The redesigned rectangular port aluminum cylinder heads result in a pump gas friendly 9.6:1 compression ratio. A hydraulic roller cam with 0.632 inch lift actuates the stainless steel valves. And, of course, hardened chromemoly retainers, roller rocker arms, and dual valve springs are used to complete the valvetrain.
     A new GM tall deck single plane intake manifold and 850 CFM Demon carburetor deliver enough air and fuel to make the 620 horsepower at 5,500 RPM and 650 ft. lbs. of torque at 4,500 RPM. Ignition is handled by a GM HEI distributor.
     This impressive big-block engine is pump gas friendly, massive torque and horsepower, all from GM, the ZZ572/620 is for who consider excess to be barely enough and suitable for street/strip applications.
     Finally released by GM but gone is the bright red paint and Chevy Bow Tie logo on the valve covers. In are traditional Chevy orange paint and 572 on the valve covers.
12499190 Partial Engine (Short-Block) 12498792 Base Engine (Long-Block) 12498793 Premium Engine

 ZZ572/620 SPECIFICATIONS
ZZ572/620
GMPP ZZ572 Dyno Movie
572 C.I.D. - 9.6:1 Compression Crate Engine Technical Information
Horsepower 620 @ 5500 RPM
Torque 650 Ft. Lbs. @ 4500 RPM
Max. Recommended RPM 6000 RPM
Compression Ratio 9.6:1
Bore 4.560”
Stroke 4.375”
Ignition Timing 36° total advance
Fuel 92 Octane
12499190 Short-Block Components
Rear Main Seal New! One-piece design
Block 25534368 - Sportsman Tall Deck Bow Tie Gen VI, 10.200” Deck Height
Crankshaft 88961554 - Forged 4340 steel
Connecting Rods 88962926 - Forged 4340 steel, H-beam style, Shot peened
Pistons 88962925 - Forged Aluminum, Full Floating Wrist Pin
Piston Rings 12499212 - STD size premium plasma-moly
Main Bearings 88962212 - STD size premium main bearing kit.
Rod Bearings 88961556 - STD size premium rod bering kit.
Cam Bearings 12499434 - STD size premium cam bering kit.
12498792 Long-Block Components (Short-Block Components Plus The Following:)
Camshaft 88961557 - Hydraulic Roller (Valve lift: .632” I, .632” E; Duration @ .050” 254° I, 264° E)
Lifters 17120060 - Hydraulic Roller Tappet
Cylinder Heads 12499255 - Aluminum rectangular port, 118cc combustion chamber
Head Gaskets 88961561
Intake Valves 12366987 - 2.25” Stainless steel
Exhaust Valves 88963128 - 1.88” Stainless steel
Valve Springs 88963934 - Dual valve springs, 1.564” coil dia., 1.800” installed height, 197 Lbs. seat pressure
Valve Spring Retainers 12366990 - Hardened chrome moly steel
Valve Retainer Key 12366992
Rocker Arms
 12361323 - Aluminum roller rockers, 1.7:1 ratio
Push Rods Intake 88961559 - High performance one piece
Push Rods Exhaust 88961558 - High performance one piece
Valve Covers 12499200 - Special 572, Orange Powder Coat
Damper 88962814 - High RPM torsional damper SFI approved, 8”.
Oil Pan 88963707
Windage Tray New! Screened and louvered
Oil Pan Gasket 10106407
Oil Pump 88963707
Spark Plug 05613878 - R45XLS
12498827 Premium Engine (Long-Block Components Plus The Following:)
Intake Manifold 88961161 - Aluminum tall deck single plane, 4150 series carburetor.
Carburetor 88961560 - 850 cfm Demon, mechanical secondary
Distributor 88961867 - HEI
Water Pump 14058915 - Aluminum, Short Style
Flex Plate 12561217 - Special 572, Automatic Transmission
Intake Gasket 88962213 - Gasket, Intake Manifold
Spark Plug Wires 12499211 - Wires & Looms, Red

 ZZ572/720R DESCRIPTION
     The new ZZ572/720R was engineered by GM Performance Parts and GM Racing exclusively for sportsman racers. The ZZ572/720R is built around an all-new Gen VI tall deck Bow Tie cylinder block. This all new race block is filled with a forged 4340 steel crankshaft with 4.375” stroke, shot peened forged 4340 H-beam rods, and forged aluminum pistons with full floating wrist pins. Plasma-moly rings are standard as 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 redesigned rectangular port aluminum cylinder heads result in a race gas only 12:1 compression ratio. A solid roller cam with 0.714 inch lift actuates the stainless steel valves. And, of course, hardened chromemoly retainers, roller rocker arms, and dual valve springs are used to complete the valvetrain.
     A new GM tall deck single plane intake manifold and 1095 CFM King Demon carburetor deliver enough air and fuel to make the 720 horsepower at 6,200 RPM and 685 ft. lbs. of torque at 4,500 RPM. Ignition is handled by multiple spark discharge ignition. An SFI approved torsional damper is installed at the factory. Out of the crate and into your race car - it’ just that simple.
     Race gas fueled, high revving horsepower, all from GM, the ZZ572/720R is the engine that will get you down the track consistently, pass after pass, season after season.
     All we can say is it’s the stupendous! Not only is it a dream big-block engine but the R in ZZ572/720R stands for “Race” and race it will, that’s for certain.
     Finally released by GM but gone is the bright red paint and Chevy Bow Tie logo on the valve covers. In are traditional Chevy orange paint and 572 on the valve covers.
12498825 Short-Block 12498826 Base Engine (Long-Block) 12498827 Premium Engine

 ZZ572/720R SPECIFICATIONS
ZZ572/720R Crate Engine Picture
572 C.I.D. - 12:1 Compression Crate Engine Technical Information
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 fuel