Plug gap?
Thread Starter
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Elder User
Joined: Apr 2002
Posts: 533
Likes: 7
From: Texas
Plug gap?
Hiya every one I just upgraded to a HEI ig and I really like it. I was wondering can I change to a bigger gap on the plugs would it make any difference if so how big should I go?
Posting Guru
Joined: Nov 2004
Posts: 2,155
Likes: 1
From: sunny fla sometimes windy
Bigger is better You should know that!! You are from TEXAS!! If you got the spark
energy to jump a bigger gap it will give a bit better combustion. I would one day clean the spark plug area and take them out open em up a abit, reinstall go for a
ride see how it feels(no misses etc.) let cool regap a bit bigger go for a ride I wouldn't
go too crazy but there is a benefit until you either lose spark or the spark thins out too
much. IF you wanted to go through the trouble indexing the plugs will also add a bit
to the effect. Don't forget antisieze and dielectric.
energy to jump a bigger gap it will give a bit better combustion. I would one day clean the spark plug area and take them out open em up a abit, reinstall go for a
ride see how it feels(no misses etc.) let cool regap a bit bigger go for a ride I wouldn't
go too crazy but there is a benefit until you either lose spark or the spark thins out too
much. IF you wanted to go through the trouble indexing the plugs will also add a bit
to the effect. Don't forget antisieze and dielectric.
Postmaster
Joined: Dec 2006
Posts: 2,866
Likes: 1
From: Rockford, Il
well my performance distributors DUI calls for a 55 gap, that info came with all the info that was shipped with the distributor. i guess you decided on the pro form or some lesser brand, hence the lack of information about the gap. Dan
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Elder User
Joined: Apr 2002
Posts: 533
Likes: 7
From: Texas
ya well saving 200 bucks is worth a lil less info sorry not much in to paying for a name =) and the more I looked in to them the more I see they are all the same. same coil out put same component's except for the sticker you cant tell them apart..truck has a bit more power faster rev much smoother and the engine looks so much cleaner. and with that extra 200 bucks I had a party 
Last edited by TheNomad; Feb 3, 2008 at 12:53 PM.
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Joined: Aug 2006
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[QUOTE=TheNomad]ya well saving 200 bucks is worth a lil less info sorry not much in to paying for a name =) and the more I looked in to them the more I see they are all the same. same coil out put same component's except for the sticker you cant tell them apart..truck has a bit more power faster rev much smoother and the engine looks so much cleaner. and with that extra 200 bucks
No, they are not the same. Different components, different quality.
Please note that our DUI's are:
1) Custom curved on a distributor machine based on your engine specs.
2) We have excellent tech support-each Distributor is issued an individual I.D. Number, so that if you change cams, pistons, etc., or want to put the DUI distributor in another motor in the future, you can call us with your ID number, have us pull your file, and then discuss whether or not you need to change your advance curve.
3) You talk to one of our employees-in Memphis, TN-not someone in another country. We are a family business that believes in the performance and racing industry
No, they are not the same. Different components, different quality.
Please note that our DUI's are:
1) Custom curved on a distributor machine based on your engine specs.
2) We have excellent tech support-each Distributor is issued an individual I.D. Number, so that if you change cams, pistons, etc., or want to put the DUI distributor in another motor in the future, you can call us with your ID number, have us pull your file, and then discuss whether or not you need to change your advance curve.
3) You talk to one of our employees-in Memphis, TN-not someone in another country. We are a family business that believes in the performance and racing industry
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