The best I could get was a 15.93 (2.4 60'). My car is a 305, auto and 3.42 gears. Only mods are K&N filter, gutted airbox, Lakewood Lower Control Arms, and SLP muffler.
Traction was a major issue with my "rubberband" tires (205/55/16) and will probably be getting some new tires this week or next (Nitto NT450 in 245/50/16). I am also hoping to buy air foil with in 2 weeks and Headers and Y pipe (looking at Hedman, other ideas would be appriciated) soon as well.
Does anyone know any other free mods I could do to get faster? Is the 15.9 a good time for my basically stock 305? The sad part about this is, that a month ago I broke my 95 Tbird and with a smaller motor, and 3.08 gears, I ran a 15.0 (lotsa other work tho; filter, intake tube, chip, bigger mass air, 2600 stall, shift kit, and 225/60 tires Yokohama 550V tires).
Wes

 

I would think 15.9 is a little high for a TPI. I dont know what year you car is as a base my friends BONE stock 91 Z28 305 TPI auto with 2:73s went 15.3 with full stereo equiment. His 60fts were 2.0-2.1s. Im betting with better 60fts that time will come down considerably, practice that launch and invest in some stickier tires and youll see a big improvement....

 

definately. traction is EVERYTHING. last time i visited the track, my first pass was a 14.3 with a 2.4 60ft. for my 2nd pass, i got my 60ft down to 2.0 and went 13.6. if you can get it down to 2.1-2.0 expect to shave about 4-7 tenths off your time.

 

yo wes you posted your time on my servey and you want to know how to make your car faster
i have basicly the same car as you
89 trans am with a 305 tpi auto with 3.45 gears
i have 245/50/16s
and i pulled off a time of 14.86@89.6mph
and a best 60' of 2.02
i have no suspension mods and if i did i would be runing faster not to mention my posi is shot and i only spin one tire
you should be runing much faster
a stock tpi 305 should run 15.70 nothing higher
all my mods are in my sig and if you are looking for headers i would get the flowtechs because the 1.5" primarys are perfect for our engine size
they fit very well, come with a y pipe that hooks up to our exhaust exactly and it only costs 200 for the muffler and y-pipe combo
if you do what i did in my sig you should be in the 14's for only a cuple hondred dollers
good luck

 

also wondering what track did you run at?
i ran at englishtown on saterday for the camaro firebird chalange
it was a blast
where do you live

 

I have a set of Edelbrock headers (TES i believe) that I'm about to sale. They're ceramic coated and smog legal. If you're intersted email me and i'll give you more details.

 

I was there that day as well, see a blue 92 Z28 with ROH Snypers up front and stock Z28 rims with drag radials??? If so that was me. If you were in the challenge I have ya on tape, give me a good description of your car, Ill go thru the footage and edit it for you and send it to ya as an MPEG but it will be kinda big and might take awhile to DL if you have 56k connection, but should be worth it...