Reply to "Engine Rebuild Questions"

ltpMember

I guess this is why people leave this stuff up to their engine builder to sort out but that would take all of the fun out of it.
Obviously more questions need to be asked especially since the spring loads and height charts for PAC and Crane are nearly the same.
The chart for PAC #1900 shows 90#@1.900"and 372#@1.115".
The chart for Crane #99839 shows 86#@1.900" and 359#@1.115".
Inside and outside diameters of 1.500" and 1.086" are identical and spring rates are 376#/in. and 354#/in.
PAC show a max lift of 0.600" in their catalogue and Crane shows 0.660" in theirs

If someone has installed the Pence Cobrajet cam and used a Crane (or other) spring package on iron 4V CC heads then please stop me from trying to reinvent this wheel.

Eternally grateful
Monty

9/16/159:15 PM

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