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Racing Valve Spring, 18lb closed pressure. Fits new style Predator (Hemi Head) engines.
Note: Actual coil bind is dependent on several factors including valve length, retainer style, keeper style, and valve height. Figures given are for reference only. Seat pockets for dual springs can typically be cut an additional .050
Note: Actual coil bind is dependent on several factors including valve length, retainer style, keeper style, and valve height.
Spring, Valve, Heavy Duty, set (Fits 240, 270, 340, & 390s). Approx 50 lbs at 1.125 installed height, 42lbs at 1.2, with 110 lb open pressure (.375 lift)
Spring, Valve, Dual, set (Fits 240, 270, 340, & 390s). Approx 65 lbs at 1.125 installed height, 60lbs at 1.2, with 140 lb open pressure (.375 lift)
These Springs Are 32lb At .925, 42lb At .825 up To .400 LiftSpring pockets will need to be cut.