Edelbrock 608719

1987-1991 Corvette (Centerbolt Valve Covers) Springs for Hydraulic Flat Tappet Camshaft Port Volumes: 165cc/65cc Valve Size: 2.02"/1.60" 60cc Combustion Chamber Assembled, Sold Individually Polished Designed for 1986-91 Tuned Port Injected (T.P.I) 5.7L small-block Chevy Corvette engines originally equipped with centerbolt valve covers. Performer centerbolt cylinder heads are 50-state street legal and accept factory centerbolt valve covers. The intake bolt pattern utilizes the 1986-91 (straight) 90° angle on all bolts. Spark plugs are angled like stock O.E. heads. Combustion Chamber Volume:60ccIntake Runner Volume:165ccExhaust Runner Volume:65ccIntake Valve Diameter:2.02''Exhaust Valve Diameter:1.60''Valve Stem Diameter:11/32''Valve Guides:Manganese BronzeDeck Thickness:5/8''Valve Spring Diameter:1.46''Valve Spring Maximum Lift:0.575''Rocker Stud:3/8''Guideplate:Hardened SteelPushrod Diameter:5/16''Valve Angle:23°Exhaust Port Location:StockSpark Plug Fitment:14mm x 3/4'' Reach, Gasket Seat Valve LiftIntakeExhaust.100''6454.200''12296.300''177124.400''217147.500''229166.600''232175.700''N/AN/AFlow Numbers as tested by Edelbrock's SuperFlo SF-1020 flow bench @ 28'' H2O Technical Notes: Recommended spark plugs are Champion RC12YC or equivalent 14mm x 3/4" reach with flat gasket seat.

Edelbrock 608719