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Base Dressed 383ci SBC w/ Cast Iron Vortec Heads, 1pc RSM - 405HP / 440FT LBS Photo Main

HP & Torque: 405 HP / 440 FT LBS Compression Ratio: 9.5:1 Cast Iron Heads Flat Tappet Cam Cast Steel Crank Block: 4 bolt main 1pc rear seal block w/Passenger side dipstick only 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 1pc RMS Rotating Assembly: New cast steel crankshaft Hypereutetic pistons Chevy heavy beam rods with 150,000 psi bolts Hastings Moly rings Balanced rotating assembly Melling high volume oil pump Flat tappet hydraulic lifter camshaft Heavy duty double roller timing set Cylinder Heads: Cast iron Vortec heads 1.25 diameter valve springs Hardened retainers and springs 2.02 swirl polished intake valves 1.60 swirl polished exhaust valves 1.5 long slot, stamped steel rockers Hardened push rods Cam Specs: Cam Type: Flat Tappet .487 Intake .508 Exhaust 234 Intake / 244 Exhaust duration @ .050 - 112 degree lobe separation Ignition Timing: 34 degrees at 4000 RPM Also Includes: Aluminum intake manifold Distributor 750cfm carburetor New chrome valve covers Brass freeze plugs Dyno tested and shipped with results

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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$3795.00 Each