CRATE ENGINE, GM -BASE 383ci (CHEVY SMALL BLOCK) VORTEC HEADS, ROLLER CAM 420HP - 440FTLB

Crate Engines GM SB - Vortec Heads w/ Roller Cam
420hp, 383ci. Torque = 440ft-lbs.

Block:
4 bolt main, 1-piece rear seal block w/Passenger side dipstick only
Square and parallel decked
Align honed main bearing bore
Cylinders honed on computer controlled machine to within .0002 straightness and roundness
Cylinders are sonic tested for thickness


Rotating Assembly:
New SCAT cast crankshaft
Flat top hypereutectic pistons
Chevy heavy beam rods with 150,000 psi bolts
Hastings Moly rings
Balanced rotating assembly
Melling high volume oil pump
Roller camshaft
Roller rockers
Heavy duty double roller timing set

Cylinder Heads:
New Cast iron "vortec" heads
1.25 diameter valve springs
Hardened retainers and springs
2.02 swirl polished intake valves
1.60 swirl polished exhaust valves
Hardened push rods

A Ton Of Extras:
Performance aluminum intake manifold
9.5 to 1 compression
New chrome valve covers
Brass freeze plugs
Dyno tested – and shipped with results
Comes with 30 month / 50,000 mile warranty

Critical Specs: Camshaft: .520 intake, .540 exhaust lift / 236 intake, 242 exhaust duration at .050

Horsepower: 420
Torque: 440
Compression Ratio: 9.5 to 1

This part fits most Chevrolet Cars and Trucks. Exceptions may apply. Please read the complete description to see if this part fits your specific vehicle and application.