340 Initial timing questions
HUG 1129
DUAL VALVE SPRING SB
145# @ 1.800" / 358# @ .550" LIFT (PAC SPRING)
- Installed Height/Pressure: 1.800"--145#
- Pressure @ .550" lift: 358#
- Pressure @ .600" lift: 375#
- Pressure @ .650" lift: 400#
- Pressure @ .700" lift : 425#
- Outer Spring ID/OD: 1.075" /1.459"
- Inner Spring ID/OD: 1.078" / .794"
- Retainers: 5/16" -1278 : 11/32" - 1201
Spring Rate 391