cody161

iTrader: (18)

Yesterday was the last test n tune day open at Beech Bend Raceway. I had made a few changes to the car over the summer and never had the time to go have fun so I figured I would get the car ready and go play.

The car is a forged 347 and other than that is a cam only car. Cam specs are 236/239 .600/.611 on a 111LSA. LS6 intake, ported TB, underdrive pulley, FTP Lid, Pacesetter longtubes with a ARH y-pipe with dual cutouts. Clutch is a Monster stage 3, T56 has been built with a Viper shaft and all the accompanying parts, 3.5" aluminum driveshaft going to a Moser 9" with a 33 spline spool and recently added 4.57 gears. Suspension setup is a all rod end parts, BMR adj LCA's, LCA relocation brackets (using bottom hole), adj panhard bar, tunnel mount UMI torque arm (-2 on pinion angle), Spohn antiroll bar (on the car when I bought it). It has Greg Weld Race Star wheels with ET Sportsman tires up front and 27" ET streets out back. At the beginning of this year I put the comp engineering 3 way adj shocks on the back of the car and I didn't have very good luck with them, so for yesterday I put my old stock shocks back on the car and it still has stock struts up front.

I wanted to get the car lighter so I ended up pulling 320 lbs. out of the car. Without me in the car it weighed 3135, and with me in it it weighed 3305. First pass the two step was set at 5800 and tire pressure was at 12 psi. Rev limiter is at 6700 and I was way short of making it through the traps so I clicked it in to neutral on the first pass and then after that I tried 5th a couple of times. Here is what the passes looked like

60'- 1.600 1.636

330'- 4.665 4.706

1/8th- 7.230 7.268
mph- 96.16 96.22

1/4th- 11.320 11.351
mph- 118.15 121.35

There are a couple other slips but they are almost identical to these two. The track started going away after the first pass so it never 60 footed any better. My main question is as the title states, do you all think that is as good as my 60' will be without getting some coilovers for the car?

Sluggish

iTrader: (10)

That 60 foot has a lot of room for improvement.

BADD SS

iTrader: (4)

Tires! A ways back I had those 27" et streets, went 1.57's with them with 430 rwhp, moved to a 28" hoosier qtp as the only real change and went mid-upper 1.4's and then changed shocks etc, and went low 1.4's... Also what pressure are you running hot? Did you set them before the burnout? Usually run about 9 cold, it comes up to 11-12 after the burnout.

cody161

iTrader: (18)

Oh wow that's a big improvement on tires alone! The next set of tires I get will be full slicks. Any recommendations on a full slick for a 6 speed car? I was setting the pressure at 12 cold and I was thinking that it would be about 15 hot.

DBN

iTrader: (6)

To answer your question, No. You can improve your 60' time dramatically with most of what you have now. We have gone low 1.3s in a formula firebird that weighs a little more than yours and with a N/A 347 with a hydraulic cam much smaller than yours. N2Racingls1 should chime in and give you the details. Tires are very important. Get some slicks for sure.

djfury05

iTrader: (30)

Hoosier QTP's will work better than your current ET Streets.. you should either be running a bias ply or full slick on a manual, not a radial.

cody161

iTrader: (18)

The tires are not a radial, it is the et street, not et street radial. If anyone has suggestions on setup changes post them up and I'll give them a shot.

zracer323

iTrader: (12)

I've gone 1.57 in my stock internal, stock geared car. Definitely some room for improvement.

cody161

iTrader: (18)

What kind of tire? A4 or M6?

aaronware76

iTrader: (2)

I have a 99' ta with a m6, 3.89 gears In a 9" with 440rwhp on 26"qtp's I spin terribly when launching over 4-4500 rpm. Anything below that I bog. Also, at 12lbs cold pressure, by the end of the eigth mile, my car sways so bad at 93mph, I couldn't imagine letting anymore air out. I have all the suspension mods with pinion angle at -3* and kyb adjustables in the rear softened as much as possible. Are 28" qtp's or full slicks the answer? I want to let it out at 6 grand and hook. As I'm sure Cody 161 wants that also. Sorry to be long winded.

TurboStangJON

iTrader: (27)

You have some room for improvement. I went 1.3's on 275 radials leaving on the transbrake at 4000. This is a stock bottom end 346 with a hydraulic roller that has been 6.40's@105-106 in the 1/8th on motor. It would be nice if you could provide a video of how it hits the tire on launch. Doing it without any adjustability is going to be tough especially if the track condition isn't favorable. However, it will just take some time and favorable track conditions.

tektrans

iTrader: (23)

He's got a t56, I don't see him cutting 1.3's anytime soon with his set up.
I think with 28" et drags you can significantly improve your 60' times, 1.4x times are acheivable. Your 1/4 mile mph may drop 1 or 2 mph but your overall ET should improve 2 tenths or so.
1.6 with 4:57 gears on a 27" tire, damn nice driving.
I couldn't do it.

Zero4488

iTrader: (10)

Gotta work on those short times....my SS Stock Internal car was going 1.60 off the foot brake

TurboStangJON

iTrader: (27)

I didn't mean he would go 1.3's an I'm sorry if it seemed that way. I said he had "some" room for improvement but of course with his limited suspension it wouldn't be much.