Kelford Cams 4G63 DRAG BEEHIVE SPRING & CHROME-MOLLY RETAINER KIT - KVS63-EXTREME

142lb @38.5mm Install / 292lb @12mm Lift 24.50mm Coil Bind

Ultimate Valve Spring and Retainer Kit for Drag Racing 4G63 engine.
Key features
142lb on the Seat, 292lb open
Pac Racing High Frequency Beehive
Huge 14mm to coil bind
4340 Black Nitrided Retainer for extra durability
4140 CNC machined seat
Designed for 1650 HP applications
11,000 RPM
Not for the faint hearted, on the shelf ready to break records.

Intake installs at 39.5mm 132 lbs. seated, 278lbs at 12mm lift.
Exhaust installs at 38.5mm 142 lbs. seated, 292 lbs. at 12mm lift.
Maximum lift 14.0mm