Kit is intended for OEM shim in retainer setup. Designed for high rpm, BC valve springs by PAC Racing are wound from only the highest grade, super clean, chrome silicone alloy and feature proprietary processing procedures for consistent pressures. BC retainers are machined from premium 4140 chromoly steel for the ultimate in reliability. Also includes steel valve spring seats.
| Type |
BC1950 Dual |
| Free Length |
1.572" Outer/1.339" Inner |
| Seat |
1.265" @ 76 lbs |
| Open |
0.850" @ 192 lbs |
| Coil Bind |
0.715" |
| Retainer |
BC2905H |
| Spring Seat |
BC2915 |
| Net Cam Lift |
0.490" / 12.44mm |
