Description
1.274" OD .630 ID 550 SPRING RATE COIL BIND 1.045 MAY NEED TO
| Part# | PAC 1237X |
| O.D. (in) | 1.275" |
| I.D. (in) | .900" |
| Spring Type | Dual |
| Inside Spring I.D. (in) | 0.630" |
| Install Load (LB) | 200# @ 1.800" |
| Open Load (LB) | 502# @ .550" 530# @ .600" 558# @ .650" 585# @ .700" |
| Coil Bind Max (in) | .755" |
| Lift Max (in) | .700" |
| Damper | NO |
| Rate | 550 |
Note: This spring is used with small blocks with Mechanical Roller camshafts.
To use this spring will require the following:
PAC R432 - Titanium Steel Retainer Set (x1)
PAC L8133 - Locks (x16)
PAC S138 - Spring Seat (x16)