Page 88 of GM Performance Parts 2006 Catalog by GM Parts Direct

CRATE ENGINES BIG-BLOCK Musclecar power at a low-buck price! Now, this is the stuff that legends are made of. Big-block, street-sweeping power just like the 60s GM musclecars that you grew up with or have worshipped for years. Now, GM Performance Parts has a 454 cubic inch crate engine that is big on power and low on dollar. Lets take a look ... We started with a brand new (not remanufactured or sourced from a scrap yard) Gen VI four-bolt big-block. The 454 HO is stuffed with a forged steel crank, forged connecting rods, and forged pistons. A roller camshaft with .510/.540" lift generates a nasty idle. Cast iron cylinder heads deliver a pump-gas friendly 8.75:1 compression ratio. Horsepower comes in at 425 with 500 lb.-ft. of big-block torque. The 454 HO is delivered to you complete with water pump, balancer, intake manifold, and 14" automatic transmission flexplate. Add your carburetor, ignition, and starter to complete the engine. Check out the GMPP line of valve covers and chrome accessories to give the engine a more eye appealing, under hood look. WHATS HOT? Big-block Small money Pump-gas friendly 12568774 454 HO 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. 86 GM Performance Parts does not utilize any used or remanufactured parts in this crate engine. GM Performance Parts crate engines include a twelve-month, 12,000-mile warranty. W 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 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; 118 cc chambers Valve size (in): 2.19 intake 1.88 exhaust Compression ratio: 8.75:1 Rocker arms (P/N 12523976): Stamped steel Rocker arm ratio: 1.7:1 Water pump (P/N 12484890): Cast iron, long-style Flexplate (P/N 10185034): 14" Recommended fuel: 92 octane Ignition timing: 4 BTDC Maximum rpm: 5500

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