does this hp/tq to the tires look low for the combo

[94mustangcobra]

what kind of plug is the racing plug? i have heard of people having problems with other kinds of plugs and to stick with the copper core. im running the autolite 103 which is also 2 steps down on my gt40s.

the ARs have a shorter grounding strap than conventional plugs, better chance of not detonating, i think, i know they recommend these plugs for nitrous/supercharger/turbo applications. you can get these plugs from autozone but they have to be ordered, takes about a day to get in. i do know that ppl shouldn't run iridiums or plat plugs. i've had good luck with these plugs, spraying for about two years.

 

[Steel123]

Your GT40s are probably what is restricting you on your engine build but also at the same time I would have thought that you would have gained more off the 125 shot...I would have thought something more in the 90-100 rwhp