98 4mula

iTrader: (7)

Went to sears point (Infenion) today. I got 3 runs then redlit in the 1st w/ -.017 rt.

I have a lid, magnaflow muffler and 4.10's (12 bolt). These runs were on 17 bias ply et streets 26x11.5 . I thought the MT would help alot more but i guess i need some chassis work. I'm hoping with a ram air kit and a pulley i could get to 111 mph. Oh the car is an M6

1st pass @ 22psi

60 1.98
1/8 8.615 @ 82.79
1/4 13.20 @ 108.84

2nd pass @ 19 psi

60 1.91
1/8 8.458 @ 84.86
1/4 13.04 @ 108.90

3rd pass @ 17 psi

60 1.93
1/8 8.37 @ 85.52
1/4 12.90 @ 109.73

4th pass @ 15 psi

60 1.85
1/8 8.374 @ 84.6
1/4 12.92 @ 109.25

PewterScreaminMach

iTrader: (7)

Keep in mind you're probably making stockish power because of no major power mods and the power loss from the 12-bolt and 4.10s, so for you to be hitting 12s and trapping 109 is already pretty solid. The car probably doesn't have the power to get you to much better than a low 1.8 60' as it sits full weight. That said, what are you launching at? If you were running an aftermarket clutch, I'd say a quick slip/dump from about 5000 and the tires should hold after a good burnout, but on a stock clutch it's not going to hold very long.

98 4mula

iTrader: (7)

I was hoping for 1.7's but i'd take low 1.8s. I was surprised it ran that mph actually. Especially for a 98 which has the more restrictive heads and manifolds. I was launching at 3000 and 3500 and it would spin then hook. I would love to get a mid 12 with a little more mph and better suspension.

PowershifterNC

Try a 4 grand launch..you won't bog as bad. I picked up a tenth on my 60' launching at 4 instead of 3500

98 4mula

iTrader: (7)

It's not really bogging just spinning for about 10 feet the grabbing

86 IROC

iTrader: (14)

Have you removed the front sway bar? I think with a few simple suspension mods and more seat time you could squeeze a little bit more out of it as is.

PowershifterNC

15psi sounds about right...possibly a little lower. What kind of burnout are you doing? You want to get the tires good and hot (sticky). I'm sure the cold weather isn't helping

98 4mula

iTrader: (7)

I think my first couple of burnouts were too short, just a little bit of smoke. I have some LCA brackets i want to install and hopefully those help a bit in putting the power to the ground. Front sway bar is on the car and won't be coming off

The weather was perfect for the most part, cool in the am then warmed up a little in the afternoon. More seat time will be a big help in finding what the car likes to launch at.

98 4mula

iTrader: (7)

Im happy with the car overall. It went from 13.34@105 to 12.90@109 with a gear change and tires

PowershifterNC

yea thats a good 60'. I took my front sway bar off and didn't notice much difference unless I was corner carving. So it's not a bad mod and easy to take off. Plus your front is that much lighter and weight will transfer better

Villain281H

iTrader: (5)

Congrats on the times, bummer on the crimson hue in round one. You guys race brackets in a Monday? Interesting!

Derek

PewterScreaminMach

iTrader: (7)

Yeah, heat those tires up REAL well. Nice big long burnout. If you're only spinning for about 10 feet then grabbing you're doing pretty well, but I run 26x10.5 ET Streets and cut low 1.6s. Granted I'm making a lot more power, but if mine can hold to that on a 4500-5000 launch and not spin much with my ridiculous gearing then yours shouldn't be spinning at all with your power, gearing, and RPM. Give it a shot with the big burnout and see how it does!

BTW, if the car can hold for it, try a second gear burnout. Even when I just had the 4.10s a first gear burnout wasn't enough to get these tires hot enough.

98 4mula

iTrader: (7)

The crimson hue killed it. I was getting some good lights too. It was a special event for MLK day. Brackets are normally held on wednesday.

speedshifterNC

iTrader: (1)

yea I always do a second gear burnout with 3.73 or lower gear