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Chevrolet Performance 454 HO Crate Engine

Brand: Chevrolet Performance

Part Number: 12568774

UPC:


$6,320.63

 

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  • 438 hp @ 5,300 rpm/500 lb.-ft. @ 3,500 rpm
  • Rectangular-port heads w/ 2.19/1.88-inch valves
  • Hydraulic roller camshaft .510 int./.540 exh. lift
  • Chevrolet Performance dual-plane aluminum intake

GET REBATE NOW

454 HO 7.4L Crate Engine

12568774 Chevrolet Engine

Big Torque on a Budget!

The Chevrolet Performance 454 HO crate engine is a Big-Block bargain – an affordable engine with performance specs that will make you think it’s 1970 all over again!

A new-style block casting with four-bolt main caps includes an all-forged rotating assembly for great strength and durability. It also uses a smooth hydraulic roller camshaft for excellent drivability and asphalt-wrinkling performance. Rectangular-port cylinder heads with large, 2.19/1.88-inch valves, round out the assembly.

The package includes a water pump, balancer, 14-inch flexplate and an aluminum intake manifold. Simply add a carburetor, ignition system and starter and your muscle car or street rod will be ready to roar.

454 HO Crate Motor

P/N 12568774

438 hp @ 5,300 rpm / 500 lb.-ft. @ 3,500 rpm

 

454 HO Tech Specs:
Engine Type: Chevy Big Block V-8
Displacement (cu in): 454
Bore x Stroke (in): 4.250 x 4.000
Block (P/N 19170538): Cast-iron with 4-bolt main caps
Crankshaft (P/N 14096983): Forged steel
Connecting Rods (P/N 19170198): Forged steel
Pistons (P/N 10215228): Forged aluminum
Camshaft Type (P/N 24502611): Hydraulic roller
Camshaft Lift (in): .510 intake / .540 exhaust
Camshaft Duration (@.050 in): 211° intake / 230° exhaust
Cylinder Heads (P/N 12562920): Iron rectangular port; 118cc chambers
Valve Size (in): 2.190 intake / 1.880 exhaust
Compression Ratio: 8.75:1
Rocker Arms (P/N 19260993)): Stamped steel
Rocker Arm Ratio: 1.7:1
Water Pump (P/N 19168606): Cast-iron, long-style
Flexplate (P/N 10185034): 14"
Recommended Fuel: Premium Pump
Ignition Timing: Base 4° BTDC, 26° Total
Maximum Recommended rpm: 5,500
Balanced: External

 

Recommended Transmission:  SuperMatic™ 4L85-E Four-Speed Automatic P/N 19300175 or T56 Super Magnum 6-Speed Manual P/N 19329795

 
Click here to view/download specifications and installation information.

Installation Notes:

  • Requires addition of carburetor, starter, fuel pump, distributor and ignition system (not included)
  • Clutch linkage bosses are now drilled and tapped. When using cast-iron exhaust manifolds, lower head bolts may need to be replaced with bolts with shorter heads for clearance
  • Comes with an externally balanced 14" automatic transmission flexplate; use flywheel P/N 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

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.

Chevrolet Performance Crate Engines include a 24-month or 50,000-mile (80,000 kilometer) limited warranty.

Click here for more detailed warranty information.







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