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4.6L DOHC Crate Engines by Sean Hyland Motorsport
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Description: 350 HP 4.6 DOHC
Part No. SHM4V350
The 4.6 Cobra engine, complete with forged steel crankshaft, 9.85-1 hypereutectic pistons, and PM rods. High lift billet cams are added to increase power in the mid range, and they also create a lope at idle, for that hot rod sound. Billet aluminum fuel rails add to the dramatic visual appeal of this 4 valve DOHC engine package.

450 HP 4.6 DOHC
Part No. SHM4V450
Sean Hyland pioneered the 5 litre version of the modular 4 valve engine in 1998 for road racing, and this engine is the latest iteration of that concept. Utilizing an aluminum block, thin wall cast iron sleeves are installed, increasing the bore to 3.70 inches (94mm). Forged pistons of 10.5-1 compression and forged steel connecting rods are added to the forged steel crankshaft. FR500 cylinder heads are ported, fitted with oversize stainless valves and high lift billet steel camshafts. A magnesium FR500 intake manifold with variable length intake runners sits on top of this engine, completing the stunning visual presentation.

600 HP 4.6 DOHC
Part No. SHM4V600
The 4.6 cast iron block with a forged steel crankshaft, is fitted with steel rods and boost friendly 8.6-1 forged pistons. 4 valve cylinder heads, topped off with a twin screw supercharger pushing out 15 psi of boost, complete this package, creating a ground pounding 600 streetable horsepower on pump fuel. Billet fuel rails and billet pulley drives complete the under hood appeal of this engine package.

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Registered: February 2002
Location: St. John's

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