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Base Dressed 496ci BBC w/ Cast Iron Heads, 2pc RMS - 480HP / 550FT LBS Photo Main

HP & Torque: 480 HP / 550 FT LBS Compression Ratio: 9.0:1 Cast Iron Heads Hypereutectic Pistons Flat Tappet Cam Cast Steel Crank Block: Seasoned block, bored .060 over Two piece rear seal, drivers side dipstick Square and parallel decked Align honed main bearing bore Cylinders honed on computer controlled machine to within .0002 straightness and roundness Cylinders are sonic tested for thickness 2pc RMS Rotating Assembly: New cast steel crankshaft GM connecting rods 150,000 psi rod bolts Hypereutectic Pistons Moly rings Rotating assembly balanced to within 2 grams High volume oil pump Flat tappet hydraulic cam Double roller timing set Cylinder Heads: GM cast iron oval port heads 120 cc chambers Hardened retainers & keepers 2.25 swirl polished intake valves 1.88 swirl polished exhaust valves Hardened push rods Long slot rockers Cam Specs: Cam Type: Roller .556 Intake .556 Exhaust 236 Intake / 236 Exhaust duration @ .050 - 110 degree lobe separation Ignition Timing: 34 degrees at 4000 RPM Also Includes: Aluminum intake manifold New valve covers, oil pan and timing cover Brass freeze plugs Distributor 800 CFM carburetor Dyno tested and shipped with results Notes: Not for use in pollution controlled vehicles. This block does have a mechanical fuel pump provision

This part fits most 1947 1948 1949 1950 1951 1952 1953 1954 1955 1956 1957 1958 1959 1960 1961 1962 1963 1964 1965 1966 1967 1968 1969 1970 1971 1972 Cars and Trucks.; exceptions may apply. Please read the complete description to see if this part fits your specific vehicle and application.

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$5745.00 Each