Page 62 of GM Performance Parts 2006 Catalog by GM Parts Direct

CRATE ENGINES CIRCLE TRACK Run up front with our race-winning 400-horsepower 350 with Fast Burn heads! GM Performance Parts Fast Burn cylinder heads are the fast way to the winners circle and theyre standard on the 350/400 Late Model GM racing engine from GM Performance Parts. This brand-new, factory-sealed racing engine is based on the popular Fast Burn 385-horsepower street crate engine, but includes a racing-only 8-quart circle track oil pan, with dual kick-out design, along with a valve cover breather kit and special "kool nut" rocker arm design. The assembly also includes an open-plenum high-rise intake manifold and 1.5:1-ratio aluminum roller rockers. Because its based on the 350 Fast Burn engine, the 350/400 racing engine includes a bulletproof bottom end, anchored by a forged steel crankshaft and hypereutectic pistons. The 23-degree, Fast Burn aluminum heads enable tremendous power in the small-block V-8 because of a unique chamber design that quickly and completely burns all of the air/fuel mixture giving you maximum power all the time. With the 350/400 racing engine under the hood of your Late Model, youll put a "fast burn" on the competition. WHATS HOT? Fast-Burn heads Forged steel crankshaft Hypereutectic aluminum pistons 88958604 Circle Track 350/400 NOTE: Distributor with melonized steel gear MUST be used with long blocks and partial engines with steel camshafts, or engine damage will occur. 60 GM Performance Parts does not utilize any used or remanufactured parts in this crate engine. CIRCLE TRACK 350/400 TECH SPECS: Part Number: 88958604 Engine type: Chevy small-block V-8 Displacement (cu in): 350 Bore x stroke (in) 4.00 x 3.48 Block (P/N 10105123): Cast iron with 4-bolt main caps Crankshaft (P/N 12556307): Forged steel Connecting rods (P/N 10108688): Powdered metal steel Pistons (P/N 10159436): Hypereutectic aluminum Camshaft type (P/N 10185071): Steel hydraulic roller Camshaft lift (in): .474 intake .510 exhaust Camshaft duration (@.050 in) 208 intake 221 exhaust Cylinder heads (P/N 12464298): 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: 10 BTDC 800 rpm 32 total 4000 rpm with vacuum advance disconnected Maximum rpm: 5800

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