Designed for up to 9000 rpm and 800whp, 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.
| Type | BC1700 Int/BC1701 Exh |
| Free Length | 1.690" |
| Seat | 1.450" @ 65 lbs / 1.300" @ 75 |
| Open | 1.000" @ 135 lbs / 0.900" @ 180 lbs |
| Coil Bind | 0.910" / 0.740" |
| Retainer | BC2700 / BC2701 |
| Spring Seat | OEM |
| Net Cam Lift | 9.0mm |
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