pHEnomIC

iTrader: (14)

I did about 11 runs at Lapeer Dragway in MI. It was pretty hot, high 70s but all in all a good day.

I took my Trans Am. Last year it ran 13.4 @ 110.75 full boltons. Since, I have added a Torquer v3 cam, changed the exhaust (open cutout w/ slp dual/dual instead of rumbler), hypertech tuning, sfcsm and Gs-d3s.

Best run: My last run was 12.73 @ 116.23, .549 reaction, 2.189 60'.
Launched at 2000 rpm, hammered clutch and modulated throttle, powershifted 2-3, 3-4.

Any tips on getting my 60' down? I could not break 2.1, almost every run was that. I tried launching off idle, launching off 2grand and rolling into it (this worked best), and even 3grand (no dice). What should I try to do with my setup? Any other ideas?

Ran tires 35 psi cold with a lot of spinning so i let out some air and it seemed to help. for burnouts, i just spun the tires over to clean em off.

I didn't remove any weight over street trim (no spare though)

Still running stock clutch, this is slipping at high rpm shifts so i need to get it changed soon.

I am very happy with the first time going with this setup, i ran many 12.7's at similar traps.

btw, Lapeer is not the nicest track and isnt known for being well prepped or anything.

flyinZ

iTrader: (15)

Drop tire pressure to about 20psi, get rid of the Hypertech and get someone reliable to tune that thing, in-car, dyno...somethin'. You'll see better results, I sure What suspension mods have you done?

pHEnomIC

iTrader: (14)

I don't have hypertech, I did tuning with hptuners and a wideband.

Suspension: Eibach prokit springs, SLP valved bilsteins, 1le swaybars, rear suspension air bag, sfcs, stb, lcas, phb.

NviouSS

iTrader: (8)

dropping tire pressure in street tires won't help. it will probably hurt you. get some dr's and that will help a lot more.

Navy David SS

iTrader: (13)

First get the new clutch in. Track prep will be another key factor. On street tires, you really don't want to leave them at 35lbs, but 20 may be a little low. Try to lower them to say 30lbs, down a "clean off" burn out. Try feathering your "new" clutch. Do little changes, and only 1 change at a time.

Practice, practice, practice. Obviously DR would help. All depends on your goals and budget.

David

transamfreak01

iTrader: (8)

get get some et streets and that'll drop you way down

pHEnomIC

iTrader: (14)

http://media.putfile.com/quarter-mile-ttop-view

Here are a couple in-car vids at the ceiling, launching at 2 grand. You can see what is going on, maybe you will be able to tell what's goin on.

00PewterSS

iTrader: (3)

I can hear your clutch slipping. I went from 13.3 to 12.9 just replacing a slipping clutch.

I went to Lapeer a couple weeks ago to check it out (just to watch). I may go there soon (after I put my car together) just because it isn't busy. I put in a torquer v2 and haven't been able to try it out. I also have an slp dual-dual. I expect my car should be just barely capable of an 11 sec run. But I'm hoping for ~12.2.

If you are on the stock 10-bolt, making the car faster at the strip you will most likely break it. The new clutch will hit harder.

Brian