Edelbrock 77429

Big Block Chevy 396-502ci Port Volume: 340cc/128cc Valve Springs for Hydraulic Flat Tappet Valve Size: 2.30"/1.90" 119cc Combustion Chamber Assembled, Sold Individually Rolled-over deck Altered valve locations Partially CNC'd chambers for cost-effective performance A356 aluminum casting heat treated to T6 specifications Extra thick deck and extra material in the spring pockets for use with high-lift camshaft and heavy spring combinations Exhaust port exits are raised .534" for impressive flow and great power on competition big blocks with 4.470" or larger bore Combustion Chamber Volume:119ccIntake Runner Volume:340ccExhaust Runner Volume:128ccIntake Valve Diameter:2.30''Exhaust Valve Diameter:1.90''Valve Stem Diameter:11/32''Valve Guides:Manganese BronzeDeck Thickness:9/16''Valve Spring Diameter:1.550''Valve Spring Maximum Lift:0.700''Rocker Stud:7/16''Guideplate:Hardened SteelPushrod Diameter:3/8''Valve Angle:24°Exhaust Port Location:Raised .534''Spark Plug Fitment:14mm x 3/4'' Reach, Gasket Seat Valve LiftIntakeExhaust.100''8062.200''159123.300''234164.400''295197.500''343223.600''369241.700''380255Flow Numbers as tested by Edelbrock's SuperFlo SF-1020 flow bench @ 28'' H2O

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