GM 496 Engine Specs (BP4963CTC)

GM_4963CTC_med

480 HP/550 ft/lbs
$5,495

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PART NUMBER: BP4963CTC

BLOCK:
  • 4 Bolt Main .060 over block
  • Two piece rear seal, drivers side dipstick
  • 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 cast steel crankshaft
  • GM connecting rods
  • 150,000 psi rod bolts
  • Hypereutectic Pistons
  • Moly rings
  • Rotating assembly balanced to within 2 grams
  • High volume oil pump
  • Flat tappet hydraulic cam
  • Double roller  timing set


CYLINDER HEADS:
  • GM cast iron oval port heads
  • 120 cc chambers
  • Hardened retainers & keepers
  • 2.25 swirl polished intake valves
  • 1.88 swirl polished exhaust valves
  • Hardened push rods
  • Long slot rockers

A TON OF EXTRAS:
  • Aluminum intake manifold
  • 9 to 1 compression
  • New valve covers, oil pan and timing cover
  • Brass freeze plugs
  • All engines are dyno tested on state-of-the-art DTS dyno and come with
  • a complete dyno sheet
  • Distributor
  • 800 CFM carburetor

 


CRITICAL SPECS:

CAMSHAFT INSTALLATION:

.556 Intake / .556 Exhaust & 236 Intake / 236 Exhaust duration @ .050 - 110 degree lobe separation

HORSEPOWER: 480
TORQUE: 550
COMPRESSION RATIO: 9 to 1

IGNITION TIMING: 34 degrees at 4000 RPM
additional notes: