351m timing help?
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Junior User
Joined: Jan 2005
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351m timing help?
I know the timing is off on my 78 f150 with a 351m AT, and my emmison sticker is gone of the valve cover, ive heard timing is suppose to be set at 10 degrees and/or 14 degrees, any help is appreciated as to what its suppose to be set at, thanks
Senior User
Joined: May 2010
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10, 12 14, 43. You can set the timing two other ways. Set it by vacuum. When you get the highest vacuum at idle. Or a PITA way. Set it advanced so it "pings" a little then back it down.
Pinging is bad and will burn a hole in the piston eventually, called predetination. But back it down a little and you will have the best advance for power. Mine will ping a little when I first get on it and it runs like a cat with a turpentined a$$.
Pinging is bad and will burn a hole in the piston eventually, called predetination. But back it down a little and you will have the best advance for power. Mine will ping a little when I first get on it and it runs like a cat with a turpentined a$$.
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