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From what I can find on these Mile-A-Mor series had an average lift of .425 and 194*@.050 with an RPM range from 1000-3800. I don’t think Isky makes thiis 351M grind for the 390 anymore. Can anyone verify? Thanks,
That is what is in it, it just came out for a cleaning. It and the lifters are in perfect shape. It has an old SP2P on it as well.
it pulled like a tractor on 6.5 cylinders.
the entire thing is done by about 4K.
Having a 7,3 Superduty I’m good in that RPM range.
putting it back together in a couple of weeks.