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Original Message
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| RE: What cam are we talking about? |
| By Bob - 01/11/2002 10:40:30 PM; IP 65.80.202.16 |
The 1966 PI cam was a solid lifter cam, had 0.525 lift (or was it 0.516 not sure as it has been thirty years). I believe it was the same cam used in the single 4 BBL 427s.
On page 39 of Supplement No. 1 of the Muscle Parts Story published by Ford in 1970, the second line in the table for cam C3AZ-6250-D shows it used in the 428 P/C [Police Cruiser] for the year 66.
The 1966 Ford shop manual, page 8-121 - about the middle of the right hand column - shows the camshaft lobe lift for the 427 and 428 Police as 0.298 which is 0.52448 with the 1.76 ratio adjustable rocker arms.
I can find no book or official reference to a 0.516 lift cam except in the NHRA specs for the 360 HP 428 in 1966 but as I recall this was the lift used for some 390-406 HP cams.
I found a reference in the 1962 Ford High Performance 406 pamphlet to a C2AZ-6250-A cam with a 276 for the '62 406 but no lift is given.
Now having said all that, I found numerous references that disagreed with much of the above. Those references are, of course, WRONG. :-) These references are often mixed in with correct data and many are obviously references to the standard 345 HP 428 but mistakenly linked to the 360 HP 428 PI engine.
Also the '67 and up 428 PI used the 390GT - 428CJ hydraulic lifter camshaft - or did they use the '67 428 PI camshaft . Well, whatever.
And that's my story and I'm sticking to it.
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