Need help with timing!
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Junior User
Joined: Aug 2004
Posts: 52
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From: Way up in the mountains
Need help with timing!
I have a '77 351-M. I run 85.5 octane through it. I was told with such a low octane fuel that I should set my timing to 6 degrees BTDC to get efficient power and gas mileage out of my engine. The factory settings on the valve cover calls for 12 degrees and I have it at 14...Is this wrong? What should I do? Any suggestions would be great.
MSEE
Joined: Apr 2004
Posts: 10,386
Likes: 35
From: Austin, TX
I would set your timing at 12 like the sticker says. The sticker is correct for any emmissions devices you may have or any other calibrations for your particular engine. If you get pinging, I would try stepping up your octane first.
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ymeski56
1987 - 1996 F150 & Larger F-Series Trucks
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Aug 13, 2011 04:55 PM
