donmcgowen
Well-Known Member
Shifting about 7500 rpm. How much psi you hitting with the 4.38? How much you want for it?What rpms are you shifting at to see 10psi? [MENTION=6362]TommyV[/MENTION] is making 15 on the 4.75 by like 7500. You read that right. 15psi. FYI I have a brand new 4.38 for a D1. Pm me if you are interested.
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