I was thinking you was asking the sub 10 sec f body group. I would say 3/4 of us all run 28 to 30 inch tall tires. and if you get over 150 mph and have any convertor slip you will be up in the Rs.

 

I'm not in the single digits yet, but '09 should be a good year. My car has a stock 3.42 10 bolt on a 26-10.50 ET Street. I broke 3 10 bolts in the '07 season and 2 in the '08 season. I run 2 small stages and go through the traps on only one stage @ about 6.2k (fixed window switch shuts off at 6k). I'll be installing a set of ported heads (currently stock 853 castings), a 35 spline 9'' with 3.25 gears, and sending my converter back to PI to be freshened up and stalled higher (currently a 2800 going to go to a 3600-4000).

 

4.30's 4l80e, traps at 7000 @ 148mph locked converter.29.5 tire

 

3.73's hear, turnin around 6700 to 6800 at the 1/4 mile

 

I'm running 3.42's

 

2.75 on a 28" tall tire t-400. It's my daily driver so I like the gears on the street. runs 9.90's with a turbo'd 346.

 

OP has a 9 second cobra now. lol

 

Tall tire does not mean you need a 5 or 6 series gear. At 213 mph, and a very tall tire, my car still uses a 4.10.
As mentioned, with power, comes other issues.
Getting off the line, tire shake, crossing the stripe below 9000 rpm, ect ect.
Still using a very tall tire, but only running 180, I am about to try a 4.57.
The huge gears are for small power guys usually running 1/8th mile.
Some high winding small blocks will use a low 5 series, but not many.
Even big power cars don't go much higher for 1/8th mile racing, because you can't get off the line.
At least most of us don't bother changing gears, and I have every gear from 3.90-4.86 for my car.

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Hmmm, I don't see any 6speed guy's in here???????