Page 53 of 2009 Performance Parts by GM Parts Direct

crate engines big-block 502 ho crate engines big-block 12568778 an affordable tire killer with premium performance specs if you re looking for huge power and time-warping torque on a budget the 502 ho is just the thing for your chevelle street car second-gen camaro sportsman drag racer or trailer-towing classic suburban with 450 horsepower and 550 lb-ft of torque this big-block lacks for nothing more important than how much power the 502 ho makes is where it makes it torque hovers just below the 500 lb-ft mark at only 1500 rpm the torque curve arcs gently above the 500 lb-ft level by 2800 rpm and stays there through 4200 rpm all that axle-twisting torque is rooted in a stronger updated four-bolt cylinder block see page 230 for details that houses a forged steel crankshaft forged and shot-peened rods and forged aluminum pistons in other words it s a super-stout assembly that is as durable as it is powerful the 502 ho comes complete with an aluminum dual-plane intake water pump 14-inch flexplate balancer and more you add the carburetor starter and ignition system iron heads keep the 502 ho affordable and the wide flat torque curve makes it a winner for your classic chevy truck camaro or chevelle big-displacement powerhouse stronger cylinder block casting 450 hp 550 lb-ft torque installation notes · requires addition of carburetor fuel pump starter distributor and ignition system · clutch linkage bosses are 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 · new for 2009 502 engines now have a mechanical pump boss · comes with an externally balanced 14 automatic transmission flexplate use flywheel p/n 14096987 and 11 clutch assembly for manual transmission applications · designed for pre-1976 street vehicles or any off-road vehicle · not intended for marine applications 12568782 502 partial engine this brand-new partial engine includes the forged reciprocating components as well as the balancer oil pan and timing chain set 502 ho dyno chart possible applications a hot chevy that deserves a big-inch rat low 11-second bracket car heavy metal hot rod that needs heavy metal power 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 502 ho tech specs part number engine type displacement cu in bore x stroke in block p/n 19170540 crankshaft p/n 10183723 connecting rods p/n 19170198 pistons p/n 12533507 camshaft type p/n 24502611 camshaft lift in camshaft duration 050 in 12568778 chevy big-block v-8 502 4.47 x 4.00 cast-iron with 4-bolt main caps forged steel forged steel shot peened forged aluminum hydraulic roller .510 intake .540 exhaust 211° intake 230° exhaust cylinder heads p/n 12562920 valve size in compression ratio rocker arms p/n 12523976 rocker arm ratio water pump p/n 19168606 flexplate p/n 10185034 recommended fuel ignition timing maximum recommended rpm balanced iron rectangular port 118cc chambers 2.19 intake 1.88 exhaust 8.75:1 stamped steel 1.7:1 cast-iron long-style 14 92 octane base 8° btdc 30° total 5500 external 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 103 102 buy online at www.gmperformanceparts.com

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