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Chevrolet Performance 12498778

454 HO Partial Big Block Engine

Chevrolet Performance 12498778

809-12498778

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Chevrolet Performance 12498778 454 HO Partial Big Block Engine $4,111.66
454 HO Partial Engine

Chevrolet Performance 12498778 Details

 

INSTALLATION NOTES:

  • Clutch linkage bosses are now drilled and tapped.
  • Comes with an externally balanced 14'' automatic transmission flexplate; use flywheel P/N 809-14096987 and 11'' clutch assembly for manual transmission applications
  • Designed for pre-1976 street vehicles or any off-road vehicle
  • Not intended for marine applications
  • Motor equipped with truck style oil pan and pickup. Vehicle specific oil pan and pickup required for installation.
  • This partial engine does not include a camshaft, lifters, timing chain or cam sprocket.

Specifications:

Flywheel Included
No
Engine Balance
External
Assembled
Yes
Connecting Rod Beam Style
I-beam
Connecting Rod Material
Forged 4340 steel
Crankshaft Material
Forged 4340 steel
Deck Height (in.)
9.8
Engine Block Material
Cast iron
Flexplate Included
Yes
Harmonic Balancer Included
Yes
Main Bolt Style
4-bolt
Main Journal Type
454 mains
Oil Pan Included
Yes
Piston Material
Forged aluminum
Quantity
Sold individually
Short Block Piston Style
Flat top
Timing Cover Included
Yes
Rear Main Seal Style
1-piece
Manufacturer's Part Number:
12498778

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The Chevrolet Performance 454ci Partial Engine are for those who want the sturdy foundation of the 454 HO as the starting point of a custom engine, this brand new partial engine includes the forged crank, rods and pistons, as well as the balancer, oil pan and front cover. The Chevrolet engineers assembled this as the basis for the Big Block enthusiasts everywhere! 454 HO PARTIAL TECH SPECS:

  • Engine Type: Chevy Big-Block V-8
  • Displacement: 454ci
  • Bore x Stroke: 4.250'' x 4.000''
  • Block: Cast-iron with four-bolt main caps
  • Crankshaft: Forged steel
  • Connecting Rods: Forged steel
  • Pistons: Forged aluminum
  • Compression Ratio: 8.75:1 (with 118cc combustion chamber head)
  • Flexplate: 14'' diameter
  • Maximum Recommended RPM: 5500
  • Balanced: External

Note: This partial engine does not include a camshaft, lifters, timing chain or cam sprocket.

GM Warranty

Items You Need
Intended for pre-1978 street vehicles and all off-road vehicles. Not intended for marine use.