PAC Racing - Extreme Duty Single Valve Springs - (1201X)
The PAC Racing 1201X is a small diameter valve spring designed to fit small block Chevrolet, turbo Buick and many other aftermarket cylinder heads without spring pocket machining. Additional post processing to allow for extreme use and endurance over traditional PAC-1201 spring
This is a single spring with flat wire damper. High rate for aggressive cams.
DIMENSIONS:
1.260” Outside Diameter
0.770" Inside Diameter
With Damper
SPECS:
Seat Pressure: 140# at 1.750”
Open Pressure: 410# at 1.200”
Spring Rate: 540#/inch
.550” Max Lift
Coil Bind: 1.115"
82 grams
PART NUMBER: PAC-1201X-16
