SB-Chevy 355ci Circle Track Engine 474HP/450TQ

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474HP/450TQ

Note: This is a racing engine assembly and has no warranty.

Block:

4-bolt main block
Square and parallel decked
Align honed main bearing bore
Cylinders are sonic tested for thickness
Cylinders honed on a computer controlled machine to within .0002'' straightness and roundness
Rotating Assembly:
SCAT 3.48'' stroke cast iron crankshaft (2 piece rear main seal)
SCAT 5.7'' rods
Keith Black hypereutectic pistons
Hastings Moly rings
Clevite bearings
Internally balanced rotating assembly
Melling high volume oil pump
Heavy duty double roller timing set
Cylinder Heads:
RHS cast iron ''Lightning'' heads
Hardened retainers and 1.437'' diameter valve springs
2.02'' swirl polished intake valves
1.60'' swirl polished exhaust valves
Hardened pushrods
Comp Cams rocker arms
Camshaft Specs:
Solid Flat Tappet
Duration @ .050'' Lift: 258 Intake / 266 Exhaust
Lift: .540'' Intake / .558'' Exhaust
Lobe Separation: 105°
Extras:
Aluminum single plane high-rise intake manifold
Steel circle track valve covers
Steel circle track oil pan
Professional Products harmonic balancer
12:1 compression
Horsepower: 474
Torque: 450