Page 57 of 2009 Performance Parts by GM Parts Direct

crate engines big-block zz572/620 deluxe crate engines big-block 19201333 the biggest baddest and most powerful big-block street engine in our arsenal to call the zz572/620 a powerful crate engine is like saying warren johnson has won a few races like the professor the zz572/620 is more than the sum of its numbers it is the ultimate expression of gm performance parts engineering capability wrapped up in a soulstirring combination of performance and attitude it is not for the faint of heart or the weak of chassis we build the zz572 by carving out the cylinder bores to 4.560 inches and adding a forged 4.375-inch stroke crankshaft aluminum rectangularport heads with cavernous intake passages complement the airflow capability offered by the humongous piston and to make sure those cylinders are packed with every cubic centimeter s worth of atmosphere we use a camshaft with an incredible 0.632/0.632-inch lift and 254/264 duration specifications a 9.6:1 compression ratio makes the engine totally pump-gas friendly gm performance parts delivers the zz572/620 deluxe with an 850-cfm carburetor hei distributor aluminum water pump and distinctive orange powder-coated valve covers that proudly proclaim the 572 legend the bottom line is 620 horsepower and 650 lb-ft of torque but like we said the zz572/620 deluxe crate engine is more than its peak dyno numbers you feel its power every time one of those big cylinders fires delivered fully assembled unique orange-painted engine block 620 hp 650 lb-ft torque installation notes · due to crate fitment the carburetor is shipped in a separate box and needs to be installed by an engine installer · clutch linkage boss is now drilled and tapped when using cast-iron exhaust manifolds lower head bolts may need to be replaced with bolts with shorter heads for clearance · requires addition of starter and fuel pump not included · gen vi tall-deck block has machined mechanical fuel pump boss · comes with a 14 automatic transmission flexplate requires internally balanced flywheel for manual transmission applications · designed for pre-1976 street vehicles or any off-road vehicle · not intended for marine applications · you do have a strong transmission and rear axle don t you 12498792 zz572/620 base engine the 620 features rectangular port aluminum cylinder heads that deliver 9.6:1 compression ratio in a pump-gas friendly package zz572/620 dyno chart possible applications the ultimate hot rod starting point pump gas drag racing just add spray wake up the neighborhood anytime only install if you want to be the biggest dog on the porch applications have not been validated they are merely suggestions of how you might enjoy your gm performance parts crate engine some applications may affect engine warranty see page 352 for specific warranty information some applications may not be emission-legal check state and local ordinances zz572/620 deluxe tech specs part number engine type displacement cu in bore x stroke in block p/n 19212195 crankshaft p/n 88961554 connecting rods p/n 88962926 pistons p/n 88962925 camshaft type p/n 88961557 camshaft lift in camshaft duration 050 in cylinder heads p/n 12499255 19201333 chevy tall deck big-block v-8 572 4.560 x 4.375 cast-iron with 4-bolt main caps forged steel forged steel shot peened forged aluminum hydraulic roller .632 intake .632 exhaust 254° intake 264° exhaust aluminum rectangular port 118cc chambers valve size in compression ratio rocker arms p/n 12361323 rocker arm ratio distributor p/n 88961867 carburetor p/n 19170095 water pump p/n 19168602 spark plugs and wires flexplate p/n 12561217 recommended fuel ignition timing maximum recommended rpm balanced 2.25 intake 1.88 exhaust stainless steel 9.6:1 aluminum roller style 1.7:1 hei 850-cfm aluminum short-style included 14 92 octane base 8° btdc 36° total 6000 internal note distributor with melonized steel gear must be used with long blocks and partial engines with steel camshafts or engine damage will occur available for purchase online at gmperformanceparts.com gm performance parts crate engines include a 24-month or 50,000-mile/80,000-kilometer limited warranty gm performance parts does not utilize any used or remanufactured parts in this crate engine for a complete list of parts to complement and finish this engine turn to page 114 buy online at www.gmperformanceparts.com 111 110 buy online at www.gmperformanceparts.com

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