Page 52 of GM Performance Parts 2006 Catalog by GM Parts Direct

CRATE ENGINES SMALL-BLOCK Big-block-style power from a small-block engine! If youre looking for a small-block Chevy that makes big-block power, weve got the engine for you! For the ultimate GM Performance Parts small-block crate engine, choose the ZZ383 a combination of Fast Burn aluminum performance heads and a 383" stroker small-block that can add up to 425 horsepower and 449 lb.-ft. of torque. A carefully engineered balance of torque-producing bottom-end power and horsepower-inducing Fast Burn cylinder heads combine for the ZZ383/425s stellar performance statistics. The Fast Burn heads have large 2.00"/1.55" valves and specially designed chambers that draw in lots of air and fuel, burning the mixture quickly and completely. Its a combination that generates great mid- and high-rpm power, which, when combined with the 383 cubic inch displacement, creates an awesome all-around performer. The ZZ383 has a specially modified engine block and 3.80"-stroke crankshaft, which produce 383 cubic inches of pure performance. The reciprocating assembly is comprised of heavy-duty components including a 4340, nitrided, and inductionhardened forged crankshaft, and unique, heavy-duty powdered metal rods. Its 425 horses of bulletproof performance. With the ZZ383/425, you get the power of a big-block with the size and weight of an aluminum-headed small-block. If youve never driven a car with a stroked small-block and the top end components to support it, now is your chance! 12498772 ZZ383 NOTE: Distributor with melonized steel gear MUST be used with long blocks and partial engines with steel camshafts, or engine damage will occur. We recommend HEI distributor P/N 93440806. 50 GM Performance Parts does not utilize any used or remanufactured parts in this crate engine. GM Performance Parts crate engines include a twelve-month, 12,000-mile warranty. W ZZ383/425 TECH SPECS: Part Number: 12498772 Engine type: Chevy small-block V-8 Displacement (cu in): 383 Bore x stroke (in): 4.00 x 3.80 Block (P/N 88962516): Cast iron with 4-bolt main caps Crankshaft (P/N 12489436): Forged steel Connecting rods (P/N 12497624): Heavy-duty PM steel Pistons (P/N 12499103): Hypereutectic aluminum Camshaft type (P/N 12370846): Hydraulic roller Camshaft lift (in): .509 intake .528 exhaust Camshaft duration (@.050 in): 222 intake 230 exhaust Cylinder heads (P/N 12464298): Fast Burn aluminum; 62cc chambers Valve size (in): 2.00 intake 1.55 exhaust Compression ratio: 9.6:1 Rocker arms (P/N 12367345): Aluminum roller style Rocker arm ratio: 1.5:1 Recommended fuel: 92 octane Ignition timing: 32 total 3000 rpm with vacuum advance disconnected Maximum rpm: 6000 WHATS HOT? 425 horses from 383 cubic inches Induction-hardened crank Fast Burn heads

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