" From: <mail@xxxxxxxxxxxx> " " " ---- Sandwich Maker wrote: " >" " >">it would be interesting to see what changes, if any, the 2.5's cam " >">went through in its lifetime. afaik the 4.0 had only two: a fairly " >">radical grind used '87-'95 and a less radical split pattern '96-up. " " " " I run an NOS 87 4.0L cam in my 95 engine with 91 injection. I'm quite " pleased with it's performance. I've never heard a threat of a ping " from it either. " " markprice242ATadelphia.net details aside all '91-5 injection is substantially identical. if you swapped the whole '91 and '95 systems you shouldn't see any change. iirc there is only one difference between the '87 and stock '95 cam, '91-5 is retarded a few degrees; renix had a knock sensor and egr which the ho mpi lacks. it also moves the power band up a few hundred rpm. dunno if the offset is in the cam or the gears. advancing and retarding is a favorite hot rodder trick for fine tuning a cam. ________________________________________________________________________ Andrew Hay the genius nature internet rambler is to see what all have seen adh@xxxxxxxxxxxxxxxxx and think what none thought