I say this due to my current mods and second ever driving a M6 & time slip on this car. It flies after the 1/8th mile in mph as a factor. Currently I'm gaining 25 mph after the 1/8th mile mark. Of course I do have to admit I was hitting the rev limiter between shifts as I didn't realize the damned tach lagged so much in between gears. I'll list the mods first;
3" y-pipe, flow master cat back, slp air lid, free mods, metco lower control arms, Hal QA1 shocks, Moser 12 bolt (3.73's), & time slip;

60' 2.040
330' 5.752
1/8 8.713
mph 83.65
990 11.155
1/4 13.313
mph 108.59

Since I've added NGKTR55's, MSd wires, & a 3" cutout.

I'm seeing cars online trap 85 in the 1/8th and 107 in the 1/4, with 3.23 and 3.42 gears (A4 & M6). So If mine will do 108 after a 1/8 mph of a dismal 83 then maybe this car has 112 in it driven with good weather and shifts just shy of the rev limiter. To run a 12.3x time what do you guys think I would need for a 60' time? Also am I right choosing BFG Drag radials?

 

DRs was one of my first mod.spinning pisses me off. you shouldnt have any problems mid 12s with a good hook and proper shifting.since you have a 12 bolt id get a stickier tire than BFGs.low 12 might be makeable with a serious hook.

 

If you are serious about going fast, sticky tires should be your first mod IMHO.

 

Only 13.3 with 3.73 gears?! Yeah, you definitely need to get some traction!!!! I had a set of 3.73's in my car earlier this year, and while I cut a 2.0 60' time, the car SHOULD HAVE cut a 1.8 - 1.9 at least?! I never managed to run any better than the 13.43 that I had already run with 2.73's, but I know that the car should have been running much closer to high 12's with traction.

GET SOME DR's or E/T Streets!!! I'm sure you won't regret it.

 

Make sure you have $$ in the bank for a 12bolt

 

You already have a 12 bolt. 11.5" x 15" x 26" ET Streets is what I would do.

 

W/ that rear Id say screw the DR's....go for the ET streets

 

Get some real tires, Hoosier QTP's.

Randy