elevation/timing question

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Sep 8, 2004 | 10:38 PM

matt77F2504x4

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elevation/timing question

im plannig on taking a fishing trip to utah this weekend, will i need to adjust my timing for the transition from 2200ft. to say 8400ft.?

Sep 9, 2004 | 02:57 AM

78Ford460

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well - if you having anything newer than say, 1989, nothing should need adjustiing, least of all the timing. EFI cars do everything themselves. If you have a carb'd, non-computerized car, and you are going fomr 2000 ft to 8000ft, you are gonna need to adjust the carb. It will be running WAY to rich at that altitude. There should be no need to mess with the timing AT ALL in either circumstance. Less air=less fuel, so the carb/fuel mixture is the only thing that needs adjusting for altitude. EFI engines will do all this automatically, but don't expect to make the power at 8000ft that you do at 2000ft. I belive you loose 1.5lbs air pressure for every 1000ft you climb. You also loose 3 degrees in temp for every 1000ft you go up, so bring that jacket!