First of all quit dealing with autolite plugs. They foul WAY to easy and their not that good of a plug. I run a bosch platinum and a NGK plug. You can't go wrong with either one of them. ZEX is absolutely right. You have to retard your timing if you do indeed plan on running a 125 shot. 4-5 degrees is the norm for a nitrous motor with a 125 shot. Hope this helps.
Eric
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68 Camaro
Gene Fulton 632ci Two stages of Jug
8.41 164mph Rockingham 1-26-03
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