Thread: 300-6 cam HELP
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Old 08-03-2012, 01:46 PM   #5 (permalink)
IsaacCarlson
eco....something or other
 
Join Date: Jul 2009
Location: Colfax, WI
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wood hauler - '91 Ford F-250
Team Pontiac
90 day: 26.69 mpg (US)

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If anything, I would want to advance the timing right? I suppose I have to be the tester on this one. It wouldn't take much to change the timing and see how it works. I have been told that advancing the timing one tooth will give a boost in power AND mileage. This came from a guy who has been messing with timing for 25 years. Race cams are retarded to give more high end to the motor. I want torque, so I would advance the cam to bring whatever top end it has, down.

I think I need new valve springs, because they sound like they are floating above 3500. It sounds all garbly and rough. The motor on my sawmill did that too, until I stretched out the springs.....
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1991 F-250:
4.9L, Mazda 5 speed, 4.10 10.25" rear
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