Page 38 of 2009 Performance Parts by GM Parts Direct

crate engines ls series available for purchase online at gmperformanceparts.com ls376/515 crate engines ls series 19171225 a race-proven camshaft helps build huge power in this carbureted combo by combining traditional carbureted aspiration with the high-tech attributes of the ls platform we ve developed the ultimate modern engine for your vintage car or truck or race car it s the ls376/515 with the ls3 engine as its foundation the ls376/515 crate engine uses the regular-production bottom end including an aluminum block with six-bolt cross-bolted main caps a corvette oil pan and ls3 cylinder heads with high-flow rectangular-port intake passages to that we swap the fuel injection system for a high-rise intake manifold of our own design a 770-cfm carburetor sold separately and our race-tested asa hot cam p/n 12480110 the new combination is worth 515 horsepower at a stellar 6500 rpm and 469 lb-ft of grin-inducing torque at 5000 rpm compared to the regular-production ls3 and even our ls3-based ls376/480 crate engine the asa hot cam gives this combination much more camshaft duration to hold open the valves longer it s a horsepower-building camshaft designed for the wide-open high-rpm world of circle track racing and it means big power for this great crate engine whether it s used on the street or track see page 300 for information on our reference guide p/n 88959384 for installing an ls engine in an older car long camshaft duration high lift for tremendous power 515 hp 469 lb-ft torque installation notes · 14-inch automatic transmission flexplate included · assembly does not include any electronics · use lsx ignition controller p/n 19171130 page 288 · includes corvette wet sump oil pan · intended for pre-1976 street vehicles or any off-road vehicle · not intended for marine applications · 770-cfm carb p/n 19170093 recommended for daily street use · non-corvette applications require flexplate p/n 12602448 ls376/515 dyno chart possible applications put an ls engine where that old small-block used to be replace the big-block with the hot new engine from gm make that show car perform as good as it looks 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 ls376/515 tech specs part number engine type displacement cu in bore x stroke in block p/n 12584727 crankshaft p/n 12597569 connecting rods p/n 12617570 pistons p/n 19168089 camshaft type p/n 12480110 valve lift in camshaft duration 050 in 19171225 ls series gen iv small-block v-8 376 cu in 6.2l 4.06 x 3.62 103.25 x 92mm cast-aluminum with 6-bolt cross-bolted main caps nodular iron powdered metal hypereutectic aluminum hydraulic roller .525 intake .525 exhaust 226° intake 236° exhaust valve size in compression ratio rocker arms p/n 12569167 int rocker arms p/n 10214664 exh rocker arm ratio recommended fuel maximum recommended rpm reluctor wheel balanced cylinder heads p/n 12615879 aluminum l92 style port as cast with 68cc chambers 2.165 int 1.59 exhaust 10.7:1 investment-cast roller trunnion investment-cast roller trunnion 1.7:1 92 octane 6600 58x internal 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 80 buy online at www.gmperformanceparts.com 73 72 buy online at www.gmperformanceparts.com gmpp_2009_pages058-089_final_rev.indd 72-73 11/21/08 3:58:34 pm

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