Circle Track 400  Performance Engine


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Specifications Fits On

Part Number:   88958604
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Fits On/Installation Notes:

GM Performance Part's Fast Burn cylinder heads are the fast way to the winner's circle and they're 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 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 giving you maximum power all the time.

400 HP @ 5500 RPM
400 ft/lbs TQ @ 4500 RPM
Compression Ratio: 9.6:1
Bore/Stroke: 4.000"/3.480"
Cast iron 4-bolt main with 1-piece rear main seal
Forged 1053 Steel Crankshaft
5.7" Steel Connecting Rods
Hypereutectic Aluminum Pistons

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