Chevy 454 Partial Engine

This brand-new 454 partial engine from GM Performance Parts includes the forged crank, rods and pistons, as well as the balancer, oil pan and front cover. This engine does not included a camshaft, lifters, timing chain or cam sprocket. Add your performance parts of choice or use GM Performance Parts. Use externally balanced flywheel for manual transmission applications.

NOTE: Intended for pre-1977 street vehicles and all off-road vehicles. Not intended for marine use.

Applications

  • Add a big-block legend to your ride
  • The perfect replacement for a big-block
  • Change your small block to a BBC

*Applications have not been validated. They are merely suggestions of how you might enjoy your GM Performance Parts crate engine. Some applications may affect engine warranty. See specific warranty information. Some applications may not be emission legal; check state and local ordinances.

454 HO TECH SPECS:
Part Number: 12568774
Engine type: Chevy big-block V-8
Displacement (cu in): 454
Bore x stroke (in): 4.25 x 4.00
Block (P/N 12561353): Cast iron with 4-bolt main caps
Crankshaft (P/N 14096983): Forged steel
Connecting rods (P/N 10198922): Forged steel
Pistons (P/N 10215228): Forged aluminum

454 Partial crate engine image

Part #:12498778

Installation Notes

  • NOTE: Distributor with melonized steel gear MUST be used with long blocks and partial engines with steel camshafts, or engine damage will occur. GMPP HEI distributor P/N 93440806 is recommended.
  • Requires addition of heads, intake, camshaft, timing gears, carburetor, starter, fuel pump, distributor and ignition system and other misc. items (not included).
  • Clutch linkage boss is cast into block, but must be drilled and tapped.
  • Use externally balanced flywheel for manual transmission applications.
  • Intended for pre-1977 street vehicles or all off-road vehicles.
  • Not intended for marine applications.