Wtf - roller rocker
well, a valley pan will keep the lifter from popping out and you losing oil pressure, but the root of the cause sounds like lack of spring pressure. Lunati recommended:
- Seat Load: 125 lbs/in @ 1.850
- Open Load: 325 lbs/in @ 1.250
- When the valve starts to close the spring needs to push the valve up fast enough and with enough force (open pressure) to never allow the pushrod to lose contact with the rocker or the lobe, eg. Rollers need some stiff springs because their ramp rates are so fast. Mopars best stock springs were 96#/242# on a 340 manual so if your reusing your springs, thats a problem.
