Page 58 of GM Performance Parts 2006 Catalog by GM Parts Direct

CRATE ENGINES CIRCLE TRACK Competitive and durable racing power at an economical price! Designed for circle tracks weekend warriors, this bullet-proof 350-horsepower, 350-cubic-inch factory-sealed racing engine is a tough combination of power and reliability and it fits almost any racing budget. Based on GM Performance Parts popular 350 HO engine, including a brand-new, four-bolt-main block, 9:1 hypereutectic pistons, cast iron crankshaft and GM iron Vortec cylinder heads, the 350/350 Factory Stock version features a high-rise dual-plane intake manifold, 8-quart single kick-out circle track oil pan, valve cover kit with breather tube and breather, and special "kool nut" rocker arm nut design. The 350 HOs unique dual-pattern cam is included, too. Its based on the one found in 1965-67 Corvette 327 engines, but with more lift and duration to clear the engine exhaust quickly and move in more air providing excellent mid- and high-range power, where you need it on the track. Delivered complete from the oil pan to the intake manifold including an HEI distributor the 350/350 racing engine has the proven parts and horsepower to enable a competitive racecar. Getting it into the winners circle, however, is your job! WHATS HOT? Vortec cylinder heads High-rise, dual-plane intake Dual-pattern cam 88958602 Circle Track 350/350 NOTE: Distributor included with 350/350 engine has melonized steel gear P/N 10456413. This MUST be used with engines with steel camshafts, or engine damage will occur. 56 GM Performance Parts does not utilize any used or remanufactured parts in this crate engine. CIRCLE TRACK 350/350 TECH SPECS: Part Number: 88958602 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 14088526): Nodular iron Connecting rods (P/N 10108633): Powdered metal steel Pistons (P/N 12514101): Hypereutectic aluminum Camshaft type (P/N 24502476): Hydraulic flat tappet Camshaft lift (in): .435 intake .460 exhaust Camshaft duration (@.050 in): 212 intake 222 exhaust Cylinder heads (P/N 12558060): Vortec iron; 64cc chambers Valve size (in): 1.94 intake 1.50 exhaust Compression ratio: 9.1:1 Rocker arms (P/N 10089648): Stamped steel Rocker arm ratio: 1.5:1 Recommended fuel: 92 octane Ignition timing: 32 total 4000 rpm with vacuum advance disconnected Maximum rpm: 5500

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