Quarter mile after 4.10's!

joshheat25 · May 16, 2005

My best quarter mile time is 14.08! I have and auto with 315/35/17 rear tires and suspension. I was planning on getting the frpp 4.10's with a trans cooler and also some other minor rear end things like 31 splines. How much can I expect my quarter mile to drop! and my best 60ft time was 2.108 I usually run 2.1 -2.2's! I ususally make a run on stock tire pressure and then put about 15 -20 psi in the tires. When I run stock psi my 60 ft sucks but my 1/4 is lower! when I lower the pressure it is the opposite.( I KNOW THIS IS COMMON SENSE BUT) I was thinking If I lower the pressure with gears and get good traction then maybe I would run 13.6- 13.8??? And also what other mods along with the gears and tranny could I do to improve times! Thanx

hotmustang331 · May 16, 2005

Gears help quite a bit, however I wouldnt expect your trap to go up as your gonna be at the top of 3rd. Time wise, 4.10s really help alot off the line if you can hook, ESPECIALLY in an auto where each gear is LONG....I say it will drop you to 13.8s easy if your cutting the same 60. I pulled a 2.10 60' with the stock gears AND DRs and ran a 13.7...put in the gears and pulled a 1.909 60 with teh kumhos @ 30PSI, on my FIRST EVER pass with the tires (different track). I think its the gears, they help a BUNCH in 1st gear.

kstang69 · May 17, 2005

you said 1.9 60' but what was the 1/4 mi time with the gears???

Leftoverchinese · May 17, 2005

i have 4.10 gears in my 01 5-speed GT. with 26x10.50 ET street's i usually cut a 1.88 60' and run about 13.71@100 mph. ive seen auto's run just as good if not better than my times. get some slicks and practice. good luck

joshheat25 · May 17, 2005

thanx so how big of a difference in 1/4 mile time between the 3.73's and 4.10's???

back_in_black · May 17, 2005

I have 397 rwhp but I cut a 1.8 60' and 12.3 in the 1/4 with auto trans and 373's first time out with bfg dr's at 19 psi

joshheat25 · May 17, 2005

Nice times is your motor stock other than the blower? And Anyone else know what I would be expected to drop in the 1/4 mile?

MaxedGT · May 17, 2005

I've got an 01 GT auto. Ran 14.3 stock@97. Went with 3.73 gears and Superchips Max programmer, ran 14.1 consistently@ 98. Then ported the plenum, intake spacer. steeda underdrives, K&N, Magnaflow catback and run 13.8 consistantly. Best 60ft, 2.03. just under 100mph. I regret not going 4.10's probably good for another .1.

joshheat25 · May 18, 2005

Thanx maxedGT I always like to hear people say that they should have went 4.10's it makes me even more convinced to do so!

myponyrocks · May 18, 2005

I'm at like 4.5k in 4th with 3:73s in a manual when I trap...

joshheat25 · May 18, 2005

crazystang05 · May 18, 2005

i went with 3.73's love them over my stock 2.73's, but with an auto i probably would have went 4.10's but I love my 3.73's

damacman · May 18, 2005

I wouldn't do 4.10s again in my 5-speed. I'd do 4.30s . . .

flashstang04 · May 18, 2005

damacman said:
I wouldn't do 4.10s again in my 5-speed. I'd do 4.30s . . .

joshheat25 · May 19, 2005

Yea thats what I like to hear!... I am 100 percent sure that I am getting 4.10's! thanx for the advice!

artificial HP · May 19, 2005

damacman said:
I wouldn't do 4.10s again in my 5-speed. I'd do 4.30s . . .

I'd do 4.56s

hotmustang331 · May 19, 2005

kstang69 said:
you said 1.9 60' but what was the 1/4 mi time with the gears???

the time in sig, 13.58 @ 100.29. 1st run ever on those tires too, we had a 20-25MPH head wind, so that dint help the trap at ALL. Before gears and chip I ran a 2.10 60' with a 13.7 @ 100.76 (no headwind, and a higher elv)

joshheat25 · May 19, 2005

yea I would too! but it is a daily driver.. so

joshheat25 · May 20, 2005

any other opinions?

joshheat25 · May 21, 2005

so it would be logical to say I would run 13.6 in the 1/4 mile after the 4.10's

Quarter mile after 4.10's!

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