FE Power Forums
FE Power Forums => Non-FE Discussion Forum => Topic started by: fairlaniac on December 17, 2025, 02:45:53 PM
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I have a set of Headman shortie headers in ‘78 F150 with a 390. The new starter I have, has the positive screw/tab at the end of the starter. How much clearance should I have ftom header tube to the tab? I have about 1/32” but can take another 1/16” off and bend it away a little for more room. I might be able to wrangle 1/8” total. Any issue? I have various material for heat shielding. I am just concerned electrically for this question. Thanks!
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http://www.fairlanet.com/images/IMG_0817.jpeg (http://www.fairlanet.com/images/IMG_0817.jpeg)
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The starter only gets battery voltage so there is not enough voltage to jump any significant gap. At 1/32" I'd be concerned about vibration, but if it's a normal Ford setup vibration while driving won't affect anything because there is no voltage going to the starter. If it's a newer version with the solenoid on the starter though, that could be an issue. I think 1/8" of clearance is more than enough in any case.
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The starter only gets battery voltage so there is not enough voltage to jump any significant gap. At 1/32" I'd be concerned about vibration, but if it's a normal Ford setup vibration while driving won't affect anything because there is no voltage going to the starter. If it's a newer version with the solenoid on the starter though, that could be an issue. I think 1/8" of clearance is more than enough in any case.
Thank you Jay. It is an older OEM style starter, solenoid on the fender well.