Thumper headz

90mustangGT said:

First of all, I don't see with your mods how you ran 15 flat? What was your 60ft and MPH, that can give us some clue to what happened. Either traction was really bad which is either due to the track or your suspension being wrong. You don't know how to drive (no offence, we all have to learn, or something is wrong with your engine. Whatever is wrong, needs to be fixed first.

ET's are dominated by traction, then comes driver's ablility, then power comes third. With slicks and a full drag suspension, properly working engine, and the know how to use it, you could probally touch the 12's with your current engine setup.

You could look into some GT40/Explorer heads and intake first, you could save some money but they don't flow stock what thumper's or TMOSS's flow, and unless the heads are near new, they probally need a rebuild. One reason Thumper heads are a good value is they are completly rebuilt down the the valve job, plus the porting, it's a good deal. When you do get new heads, I recomend highly double valve springs, it makes a really big difference high rpm's and/or with a biger cam. The only thing, Iron heads weight a lot more, you would save 50lbs by going with an aluminun head. Which brings me to the next point...

...Another way to get your ET's down is to reduce weight and drag. As a general rule which proves to be mostly accurate, for every 100lbs of weight reduction equals a tenth off the ET, and a few lbs here and there adds up, and thenth reductions adds up. Also weight placement, more weight to be shifted to the rear, such as the battery, the better. The A/C, Smog, and P/S add drag and weight in the worse places.

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