>From the history that I have read, there were two different PI cams. The
early version was known for it's rough idle but increased power. This
cam helped make up the 150 h.p. PI TR6's, along with other PI specific
differences. The second cam corrected the rough idle, but brought the
power down. Thus creating the 125 h.p. series of TR6's. I believe that
the second cam was shared with the 2.5PI Saloon.
long story short... if your looking for improved power with the smooth
idle, look into the later specification PI TR6's. I believe it is 73 or
74 and later models. That cam with the appropriate compression. I
believe the PI cars had 9:1. Should get you to your goals.
Shawn Loseke
1972 TR6
Fort Collins Colorado
ds55427@aol.com wrote:
>
> There was somebody on list that mentioned PI Cam, are you listening, if so I
> would like Specs. ( The letter was eaten by this AOL mail box)
>
> I am on with R. Good, for the GP2 grind, but they won't be back in his hands
> till Monday.
> My thinking on factory grind spec is they were not only in pursuit of
> improved power, but did not pass the fine line, and sacrifice the smooth flow
> of its idle band.
>
> Don
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