GM12498772-8
$4,728.82
inc. GST
SKU: GM12498772-8
BRAND: Rocket
Small Block Chevy 383 c.i.d. Crate Engine Vortec Heads
405 hp/440 ft-lbs torque, 9.5:1 Comp, Aluminium intake manifold, Hyd Flat Tappet Cam
BRAND: Rocket
Small Block Chevy 383 c.i.d. Crate Engine Vortec Heads
405 hp/440 ft-lbs torque, 9.5:1 Comp, Aluminium intake manifold, Hyd Flat Tappet Cam
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- 4 bolt main 1pc rear seal block with driver 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
- New cast steel crankshaft
- Hypereutectic pistons
- Chevy heavy beam rods with 150,000 psi bolts
- Hastings Moly rings
- Balanced rotating assembly
- Melling high volume oil pump
- Flat tappet hydraulic lifter camshaft
- Heavy duty double roller timing set
- 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
- 1.5 long slot, stamped steel rockers
- Hardened push rods
- Aluminium intake manifold
- 9.5 to 1 compression
- New chrome valve covers
- Brass freeze plugs
- Dyno tested - and shipped with results
- CAM: .487Int / .508 Exh & 234 Int / 244 Exh duration @ .050 - 112° lobe sep.
- COMP RATIO: 9.5 to 1 (requires 91 octane fuel)
- Ignition timing: 34 Degrees Total (at 4000 RPM)
- This engine requires a 400ci weighted harmonic balancer, and late 350ci weighted flexplate/flywheel.
