timing 1977 400 a/t 4x4

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01-14-2004, 11:54 AM

kmulholl

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timing 1977 400 a/t 4x4

please help ! I have no idea what the timing should be. Somehow I've come up with 12 btdc. but I don't think it's right. Any help would be great.

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01-14-2004, 12:57 PM

freak98

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What mod's do you have?

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01-14-2004, 07:08 PM

bubbaf250

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Welcome to FTE.

12 degrees BTDC could be right.

Check this page for some factory ignition timing specs:

http://home.earthlink.net/~bubbaf250/perf/perf10.html

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01-15-2004, 06:16 PM

garypettengill

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Right on the valve cover smog decal of my 77 400w/Auto Trans is 12 degrees BTDC.

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01-15-2004, 07:28 PM

kmulholl

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Thanks for the help. I'll look elsewhere for my problem then. May be vacuum leak. I have dead spots on acceleration, I thought timing, guess not. Thanks again

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