8850,
Just wanted to comment on a couple of things. My converter will 'flash' to ~3900 and I shift into 2nd and 3rd at 6100rpms, crossing the 1/4 mile at ~6200 rpms.
I saw mention of the Trick Flow Intakes in this thread and cannot recommend them, I tried both the Street and Track Heat intakes, both upper/lower match ported to my Street Heat Heads. I lost HP, MPH and 1/4 time on both intakes.
GT-40 11.70's 114mph
Street Heat 11.99 111mph
Track Heat 11.90 111mph
Downs Ford Box upper 11.59 115mph
All of this was done with a period of about two months and no other changes in the car. The weather at the Track was it's best when I ran with the Trick Flow Intakes.
If others have better luck with those intakes, then Good, glad to hear money well spent. In my case, I didn't not have a good experience.
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