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Browse Parts By Category Air Cleaners Air Scoops Alternators American Turbine-AT 309 Jet Drive American Turbine-SD 309 Jet Drive American Turbine-SD 312 Jet Drive Ball Cocks Battery Boxes Battery Switch Bearings Bell Housings Berkeley Jet Drive Bilge Pumps Block-off Plates Borg Warner Transmissions Bosses Bosses, Cavatation Plates Cables and Accessories Cams Carburetor Wedges Carburetors and Accessories Cavitation Plates Accessories Clamps Cleats Closed Cooling Collars, Safety Controls Coolers Couplers, Split Sleeve Dampers Deck Mounts Dip Sticks and Tubes Distributors Dividers Dominator Jet Drive Drains Drive Lines Dry Run Kits Engine Mounts Engine Oil Supplement - E.O.S. Engines G.M. Long Block Engine Assemblies Engines Marine Epoxy Putty Exhaust Elbos Exhaust Ports Exhaust Ports with Mufflers Exhaust Systems Fasteners Fins Flame Arrestors Flex Plates Flush Kits Flywheel Power Take-Offs (Specify Std or P.G.) Flywheels Foot Throttles Fuel Fills Fuel Filters Fuel Lines Fuel Pumps Gaskets Gate Valves Gauge Bezels Gauge Mount Gauge Senders Gauges Grab Handles Grease, Jet Harmonic Balancers Heat Exchangers Hose Hose Fittings Instruments Intake Manifolds Jet Garden Hose Connection Kits Kodiak Jet Drive Lenco Trim Tabs Motor Mounts Mufflers Oil Adapters & Hose Kits Oil Coolers Oil Drain Kits Oil Filters Oil Pans Oil Primers Packing Paint Pick-Ups Place Diverter Jet Trim Plugs Plugs Polish Propeller Shafts Propellers Pulleys Pumps Rudder Support Bracket Rudder/Stuffing Boxes Rudders Run Dry Kits Sand Trap Sea Strainer Seals Senders Sensors Shaft Log Shaft Log Stuffing Boxes Shafts Ski - Tows Spark Plugs Speed Grates Speedcoat Starters Steering Accessories Steering Systems Steering Wheels Stringer Washers Struts Switch Bezels Switches Tach. Mount Tachometer Thermostat Kits Throttles Thru-Hull Fittings Tiller Arms Tilt Shims Timing Gear Covers Timing Pointers Trim Tabs Turnbuckles Universal Joints V - Drives Valve Covers Valve Covers Accessories Velvet Drive Borg Warner Transmissions Vents, Fuel Water Cover Plates Water Filters Water Pumps Wedges Wire Extension Wire Harness, Engine Click to enlarge Category Engines Sub-Category G.M. Long Block Engine Assemblies Part number 438454HO Description 454 HO 438 HP Base, Iron Head complete with Intake. The 454 HO offers tremendous value in a big block crate engine. Based on the Gen VI block, this 425 horsepower cast iron head engine is a great choice for that muscle car in the garage. We've heard of several of our customers replacing their rare matching number 396, 427 or 454 with our 454 HO in order to drive their car on today's gasoline without fear of destroying their classic engine. The HO stands for high output, it also stands for big valves, rectangular ports, forged pistons, forged steel crankshaft, forged connecting rods and four bolt mains. Sounds a lot like the performance big blocks of the late 60's doesn't it? When you add in the steel roller camshaft, shotpeened rods, windage tray, one piece rear main seal and high speed single roller timing chain, it starts to sound more like the performance big block of the new millenium. And it is. The 454 HO makes 500 ft.lbs of torque with its rectangular port open chamber cylinder heads. With 118cc combustion chambers, the modest 8.75 to 1 compression ratio loves today's pump premium and has no appetite for lead, octane boosters or other fuel additives. Its 2.19" intake and 1.88" exhaust valves and high lift .510"/.540" roller cam let it breathe with the best of the early muscle motors. With your carburetor, HEI distributor, exhaust system and bright red '67 Corvette coupe (sold separately 34 years ago), you've got a muscle cruiser worthy of your time, effort and expertise. And, if you want to use your muscle car's fuel system with a mechanical fuel pump, you can because the 454 HO Gen VI block has a conventional style fuel pump boss. Click here for details from the GM Performance Parts Catalogue Contact us for pricing and additional details: By Telephone at +1-604-278-1880 By Email at sales@californiamarine.com Copyright California Marine Sales Corporation, 1999-2024. California Marine Sales Corporation, #150-6751 Graybar Road, Richmond, B.C., Canada V6W 1H3 Phone (604) 278-1880, Fax (604) 278-6040 Email: sales@californiamarine.com ** We Ship WorldWide **