Pit Stop USA is The Online Motorsports Superstore! GM Performance Parts Circle Track Crate Engines offer competitive and durable racing power at an economical price! Designed for circle track's weekend warriors, the bullet-proof 350-horsepower, 350-cubic-inch factory-sealed racing crate engine is a tough combination of power and reliability a"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. Delivered complete from the oil pan to the intake manifold a"including an HEI distributor a"the 350/350 racing engine has the proven parts and horsepower to enable a competitive racecar. GM Performance Part's Fast Burn cylinder heads are the fast way to the winner's circle a"and they're standard on the 350/400 Late Model GM racing engine from GM Performance Parts. This brand-new, factory-sealed racing engine 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 it's 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 a"giving you maximum power all the time. With the 350/400 racing engine under the hood of your Late Model, you'll put a "fast burn" on the competition.