Page 50 of 2009 Performance Parts by GM Parts Direct

crate engines big-block 454 ho crate engines big-block 12568774 our most economical big-block crate engine delivers muscle car-era performance gm performance parts 454 ho crate engine is a classic in its own time it offers enthusiasts an affordable big-block combination with performance specs that will make you think it s 1970 all over again with 425 horsepower and 500 asphalt-wrinkling pound-feet of torque the foundation of the 454 ho is the new casting of the venerable cylinder block which incorporates strength and performance design enhancements see page 230 for more details to that we add an all-forged reciprocating assembly for maximum durability a roller camshaft and a set of tried-andtrue rectangular-port iron cylinder heads your 454 ho crate engine package is delivered with a water pump balancer 14-inch flexplate and aluminum intake manifold add a carburetor ignition system and starter and your budget big-block will be ready to roar they re all available from your nearest gm performance parts dealer everybody needs to experience big-block power at least once in their car-enthusiast lifetime and the 454 ho is the practical way to do it improved cylinder block casting affordable big-block performance 425 hp 500 lb-ft torque installation notes · requires addition of carburetor starter fuel pump distributor and ignition system not included · 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 · 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 12498778 454 partial engine the sturdy foundation of the 454 ho is the starting point of a custom engine build use externally balanced flywheel for manual transmission applications 454 ho dyno chart possible applications turn that project car into a bigblock legend the perfect replacement for a bigblock car that needs a new mill your first big-block a bright red 1970 chevelle 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 454 ho tech specs part number engine type displacement cu in bore x stroke in block p/n 19170538 crankshaft p/n 14096983 connecting rods p/n 19170198 pistons p/n 10215228 camshaft type p/n 24502611 camshaft lift in camshaft duration 050 in 12568774 chevy big-block v-8 454 4.25 x 4.00 cast-iron with 4-bolt main caps forged steel forged steel 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 4° btdc 26° 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 97 96 buy online at www.gmperformanceparts.com

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