The Chevrolet 454 engine was manufactured by General Motors. The big-block Chevy (BBC) engine has been used in cars and trucks. The Chevy K30 pickup truck and the Chevrolet Caprice Classic are examples of vehicles that used the BBC engine. The 454 belongs to the Mark IV family of engines produced from 1965 to 1974. You can purchase the Chevrolet 454 engine on the aftermarket, and modifications or upgrades can be made to the engine. Any installation, modification or upgrades made to the engine should be done by a professional.
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Intake Tightening Specs
The Chevrolet 454 engine used 30ft.-lbs. of torque on hexagon bolts to tighten the intake manifold to the cylinder head. One set of bolts connecting the water adaptor to the intake manifold used 20ft.-lbs. of torque, while another set used 30ft.-lbs. of torque.
Exhaust Tightening Specs
The bolts connecting the exhaust manifold to the cylinder head used 20ft.-lbs. of torque.
Crankshaft Tightening Specs
The bolts on the rod connecting the pistons to the crankshaft used 50ft.-lbs. of tightening. The bolts connecting the crankshaft to the engine block used 95ft.-lbs. of torque and the bolts connecting the flywheel to the crankshaft used 65ft.-lbs. of torque. The hub connecting the vibration damper to the crankshaft used 85ft.-lbs. of torque.
Cylinder Head Tightening Specs
The Chevrolet 454 engine had a bore and stroke of 4.25 inches by 4.0 inches and a displacement of 454 cubic inches, or 7.44 litres. The engine had a peak horsepower of 230hp and a peak torque of 360ft.-lbs. when equipped on the Chevy K30 pickup truck.
The bolts connecting the cylinder head to the engine block used 80ft.-lbs. of torque, while the bolts connecting the rocker arm stud used 50ft.-lbs. of torque. One spark plug connected to the cylinder head used 25ft.-lbs. of torque and another used 15ft.-lbs. The bolts connecting the valve cover to the cylinder head used 4.17ft.-lbs. of torque.
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