Police in hot pursuit...

Pearlsnake · #1 (**permalink**) 03-22-2006, 04:56 PM

I know that the 429 had many versions (Thunderjet, Standard, P.I., CJ, ans SCJ) and that the SCJ was the top one. I have had the pleasure of hearing most of these engines run at idle and up to speed and I have been able to find out almost everything about the except for one thing: the cam specs on the 429 P.I. engine. This engine had an alluring, and rough, idle that made listeners think that it wasn't stock, even though it was. I know that the '71 and '72 P.I. had hydraulic lifters and that the cam's high lift was very harsh on them (the lifters became weak and needed replacing after only a year). The engine had decent low-end torque and would never stop pulling at higher RPMs, I am amazed at the fact that the 429 would put the bar from the speedometer into the dash (completely out of sight), which registered 140MPH and had "CALIBRATED" printed on it. Does anyone know what the specs for the cam were?

Charging down the road in a 1972 Ford Custom (originally an Internal Revenuer's car) at 140+...those were the days.

byron w · #2 (**permalink**) 03-23-2006, 09:34 AM

Hey Pearlsnake,
The specs on the 72 429 PI cam are as follows:

Part number: D2OZ-6250-A
Type: Hyd
Int open:35 deg btc, closes:73 deg abc
exhaust open:86deg bbc, closes:26deg atc
Int duration: (advertised) 288, exh:292
Lift at valve:.493 int, .501 exh
overlap:61 deg
Post a fax number and I will fax you the page out of the Ford Off Highway
parts book that this info came out of.
They do sound good as I remember.
Byron

Pearlsnake · #3 (**permalink**) 03-23-2006, 10:46 AM

Sorry, I do not have access to a fax machine, but I do thank you for answering my question.

byron w · #4 (**permalink**) 03-23-2006, 11:47 AM

you are very welcome !!!