I went to the track last week was not happy with the results.
2002 SS M6, h/c (tr224/112), headers, stock 10b 3.42's.

The real problem was the stock tires (Eagle F1 275's).
The car put down 395rwhp this summer.
The car wouldn't hook for **** and the wheel hop was pretty noticable.
I don't have the exact numbers with me, but here's the jist...

60' ... 2.3-2.4
1/8 ... 8.8
mph ... ~90
1/4 ... 13.2x
mph ... 112-113

So what et's should I have seen if the car had a more respectable launch?

 

guesstimate 1.5 tenth for every tenth reduction in the sixty foot time. Sooo if you get down to 1.8 sixties (should be no prob) you are looking at 1/2 sec. difference in sixty times and approx. 3/4 sec. in the quarter which is mid twelves...I think you are probably spinning through the sixty though.

 

hey man, i owe ya a few for the workout advice before so let's see...

1-tell me about your suspension

2-tell me about your launch technique.

3-is the car tuned?

4-any weight reduction?

5- stock clutch or aftermarket?

6-any details on the weather that day, D.A would be great if you have it.

 

Wheel hop huh? Sounds to me like you need some subframes and need to get that pinion angle set right....Spinning is because you have too much power for street tires. Buy a 12bolt or 9" and put some good tires on it and leave @ 6000 and I'll bet that you will get a mid to high 11 sec slip.

 

Except for the h/c, headers , everything else is bone stock.

I'm probably going to do some suspension work (lca's and Trq arm) to limit the wheel hop. It has the bilstein suspension from the factory(slp). When I get around to it, I'm going to get a 12bolt and a better clutch.

Car was tuned by Mike@rapid. There was some KR on *one* run, but otherwise the car ran like a champ. No weight reduction, stock clutch(ls6).

The weather was ~65 low humidity, partly cloudy. It was a track rental so I had plenty of runs to try and find the right launch method, but I just couldn't cut a better 60'. I tried low rpm quick clutch, slipping the clutch, nothing hooked except leaving at 1200rpms but then it bogged because of the gears. I just kept overpowering the track. If I tried to "walk" it off the line, I'd get wheel hop. If I held it at 2200rpms and slipped the clutch, the car would go sideways. We started with water in the box, so I would "shake" the tires a bit, but not do a real burnout. Then they stopped hosing down the left lane so I tried skipping the "burnout". That changed nothing. I tried doing two runs back to back figuring the tires were hot, nada. Once I got hooked ~45mph the car pulled great + shifting <6600. That's why I started wondering what the car would really do with some sticky tires and a rear/clutch combo that could take the abuse.

This was the Atco rental from last week that JS setup. There was another member there with basically the same car and we were the only two in the left lane. So the only difference was he dynoed ~20hp less, but had Nitto Extreme's. He had a best run of 12.18@~115. I thought it was amazing that tires could make that much of a difference. And he was complaining that his clutch was slipping to boot.


So do I have to get a "drag intended" tire to hook? or is there something I can get and still feel comfortable on the road...especially when I nail an offramp at 70mph.

 

400rwhp + street tires + M6 = no hooky, at all, ever, forget about it.

 

No argument here. Just guessing at the 'real' et's...

 

i would do some basic suspension and a nitto drag radial.

sub frames, LCA's and nittos.

next step suspension wise should be shocks/springs..stiff *** bilsteins will forever kill you even if you do everything else..car needs to transfer weight, bottom line.

 

I'm thinking Spohn: lca's, torque arm, pandhard. I probably won't get different shocks unless they can adjust from mushy to stiff and I don't know of any "best of both worlds" shocks on the market. I like handling the twisties more than the 1/4 mile so I'll always be leaving some ET on the table. I just didn't want to leave over a second there.