Isky Cams RAD-9000 Precision Tool Room Dual Valve Springs w/ Damper - (Set of 16) - Outer: 1.650" O.D., 1.145 I.D. - Inner: 1.040" O.D., .740" I.D. 11104PRB Traditional High-Quality Cast Aluminum Appearance

Traditional High-Quality Cast Aluminum Appearance With Clean Exterior Styling

Fits 1981 to 1989 GM TH700R4 and 1981 to 1991 TH2004R

1971-1975 Chevrolet Bel Air CID 400

A modification to the windage tray is required to provide clearance to the pick-up tube

On-Board Diagnostic LEDS for: ECU Power - Engine Run - Wideband Status - TPS Calibration - Crank Signal -Cam Signal

Isky Cams RAD-9000 Precision Tool Room Dual Valve Springs w/ Damper - (Set of 16) - Outer: 1.650" O.D., 1.145 I.D. - Inner: 1.040" O.D., .740" I.D. 11104PRB Traditional High-Quality Cast Aluminum AppearanceIsky RAD 9000 Precision Tool Room Valve Spring taken one step further. Springs have undergone Radial Densification (RAD), which further modifies the springs' physical properties. Designed for endurance oval track racing, RAD 9000 springs are sold in sets of 16. Isky RAD 9000 Precision Tool Room Dual Valve Springs w Damper Outer: 1. 650" O. D. 1. 145 I. D. Inner: 1. 040" O. D. . 740" I. D. Seat Pressure 245 @ 2. 000" Open Pressure: 600 @ 1. 300" Rate