Page 26 of 2009 Performance Parts by GM Parts Direct

crate engines small-block fast burn 385 turn-key crate engines small-block 19201331 high-flow heads pump up a popular combination for 385 horsepower we took the bottom end of the famed zz4 and topped it with our horsepower-building fast burn cylinder heads to create the fast burn 385 the result is 385 horsepower and a satisfying 385 lb-ft of torque just the thing for a quick yet budget-minded second-gen f-body a truck in need of additional pulling power or any other project you ve got a more aggressive roller camshaft with 0.474/0.510-inch lift delivers the valve actuation to satisfy the airflow capability of the lightweight vortec-style aluminum heads they ve got large 210cc intake runners and 2.00/1.55-inch valves along with later-style center hold-downs the foundation for the fast burn 385 is a sturdy iron block with four-bolt mains a forged crankshaft and quiet hypereutectic pistons that deliver a 9.6:1 compression ratio as a turn-key crate engine it comes with the distributor carburetor and balancer installed along with a starter fuel pump air conditioning compressor alternator front-end accessory drive kit and more in one convenient all-inclusive package fast burn aluminum heads zz4 bottom end four-bolt mains inclusive turn-key package installation notes · comes with 12.75-inch externally balanced 153-tooth automatic transmission flexplate change to externally balanced flywheel for manual transmission applications see chart on page 175 · requires fuel line from fuel pump to carburetor · fuel pump pressure is pre-set fuel pressure regulator not required · some assembly and minor engine tuning required · designed for pre-1976 street vehicles or any off-road vehicle · not intended for marine applications 12496796 12561723 fast burn 385 base it has the same forged crankshaft hydraulic roller cam and high-flow fast burn heads as the turn-key crate engine but delivered without the carburetor fuel pump starter and other accessories zz4 partial engine the fast burn 385 is based on the popular zz4 engine and this partial engine assembly includes the forged steel crankshaft lt1-style high-silicon pistons and connecting rods fast burn 385 dyno chart possible applications replace that iron-headed original make that show car a little faster than you first planned take it drag racing and see what happens 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 fast burn 385 tech specs ecs part number engine type displacement cu in bore x stroke in block p/n 10105123 crankshaft p/n 12556307 connecting rods p/n 10108688 pistons p/n 10159436 camshaft type p/n 10185071 camshaft lift in camshaft duration 050 in 19201331 chevy small-block v-8 350 4.00 x 3.48 cast-iron with 4-bolt main caps forged steel powdered metal steel hypereutectic aluminum hydraulic roller .474 intake .510 exhaust 208° intake 221° exhaust cylinder heads p/n 12464298 valve size in compression ratio rocker arms p/n 10089648 rocker arm ratio recommended fuel ignition timing maximum recommended rpm balanced fast burn aluminum 62cc chambers 2.00 intake 1.55 exhaust 9.6:1 stamped steel 1.5:1 92 octane base 10° btdc 32° total 5800 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 except for the starter alternator and power steering pump for a complete list of parts to complement and finish this engine turn to page 56 buy online at www.gmperformanceparts.com 49 48 buy online at www.gmperformanceparts.com

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