ignition help
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ignition help
I have a 1985 f150 with a 300cid. I have an offenhauser header and a 4b intake manifold with an adapter plate with a Holley 2b 350cfm. Stock cam and everything else. I was wondering if a higher voltage ignition coil and some better plugs would give me anymore noticeable power increase.
Fleet Mechanic
Joined: Nov 2002
Posts: 1,643
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My opinion: Only if you have rasied the compression ratio substantially and are planning to rev the engine higher than its original upper RPM limit - about 4600 RPM or so. Otherwise the stock TFI ignition should work fine.
I know many others will disagree with me and chime in with their anecdotal evidence so let the debate begin - once again.
I know many others will disagree with me and chime in with their anecdotal evidence so let the debate begin - once again.
Postmaster
Joined: Dec 2006
Posts: 3,603
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From: Spokane, WA
What FTF said X2. It only takes X amount of volts to fire a plug and that X amount is probably much less than one thinks and all the rest of the excess voltage is just sitting there going along for the ride.
https://answers.yahoo.com/question/i...0215424AAMEFwe
https://answers.yahoo.com/question/i...0215424AAMEFwe
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Thanks for the advise. Also just wondering what would happen if I had too much of a gap on my spark plug. Because in theory the larger the gap the more voltage required to jump the gap and the hotter the spark. Right?
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