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1st time out with blower-no tune.

This is a discussion on 1st time out with blower-no tune. within the Drag Racing forums, part of the Racing Forums category; Hey I just ran a best of 13.24 at the track last week, (107 MPH 2.03 0-60). I have a ...

  1. #1
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    Red
    1996 TransAM Supercharged

    1st time out with blower-no tune.

    Hey I just ran a best of 13.24 at the track last week, (107 MPH 2.03 0-60). I have a 96 T/A with a Vortech supercharger 6 PSI and headers and free-flowing exhaust. I dynoed the car over the weekend and it had 385 Rear wheel HP and about 390 torque. I have Koni adjustables in the back and KYB non-adjustables in the front. It has sub-frame connectors and a 6-speed trans. What mods do I need to do to get it to low-mid 12's? From what I can tell it hasn't been tuned and the factory rev-limiter hits at 6000 RPM. And help would be appreciated.

    Dave

  2. #2
    General Mota's! stevegrizzle's Avatar
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    mid blue
    99 m6 z28

    Driver mod?

    Weight reduction......

    I think you should be trapping much higher than 107 with that much power......

  3. #3
    Senior Member greatwhiteZ28's Avatar
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    should be in the 12's. i would say the suspension but you alrady have koni s.

  4. #4
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    Red
    1996 TransAM Supercharged

    Slow T/A

    I still want to get an aftermarket torque bar. It seems to launch decent. I know the 2.0-2.2 rear end launches are killing my ET too. I think my next step is to go from the 3:42 gear to a 3:90 or 4:10. Initially I thought to just toss in a 4:10 gear, better axles and possibly a better posi unit but by the time you add it all up it's about $1000 or so. You can get the better 12 bolt or 9" rear end assemblies for like $2200 so I think I'm going to hold off. I think right before the track closes here in Michigan in October I'll just toss the 4:10 in and take my chances. I just don't want the car down the rest of the summer with a toasted rear end.

  5. #5
    Member chieftransam's Avatar
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    Blue
    2001 Pontiac Trans Am M6

    yeah if your m6 i would go with the 4.10's.. thats what i'm saving for to go with the moser 12" or 9". I was stock going 13.1-13.4 with like 2.3+ 60's (3.42 stock rear on street tires) and I was trapping over 107-109. And my reaction time is horrible, But when I get back from this deployment I have a h/c package as well as some suspension stuff thats going to put me in the 11's. I agree with greatwhiteZ28, you should be trapping higher then that with that much power.

  6. #6
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    Red
    1996 TransAM Supercharged

    96 T/A woes

    Yeah, I think I'll put the 4:10 in and baby it at 2000 RPM launches maybe 3000 RPM and see what happens. I wonder how much ET I'll knock off going from a 3:42 to a 4:10 with me now going 108 mph at a best of 13.24. So what's a H/C packege anyways??

  7. #7
    Member Lawnman's Avatar
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    lookin for a ws6

    re

    You most likely need a tune. That should help out alot. Like everyone said your mph should be higher .
    How much wheel spin do you have?

  8. #8
    Member chieftransam's Avatar
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    Blue
    2001 Pontiac Trans Am M6

    h/c - heads and cam - (I bought mine as a package along with some other stuff.)

  9. #9
    Missing 4 Cylinders BULLET_WS6's Avatar
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    if your tires are spinning and causing that high 60' maybe you should look into some decent drag radials first off... not trying to be rude but with those nice rwhp numbers you are pushing your time should be way lower... u could hit like 12.8 with those numbers especially with drag radials

  10. #10
    Member chieftransam's Avatar
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    yeah I agree ^^^.. you should be in the 12's!

  11. #11
    Senior Member Wheeler99WS6's Avatar
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    black, 05 Roush
    black, 99 T/A WS.6

    380 to the rear wheels and you should be capable of nearly high 11's. You need to practice. Learn to feather the throttle and minimize your wheel spin and get those sixty foot times down. I would tune it if you are hitting rev limiter at 6000, probably pull another 15 horse out maybe also. Your car is definitely capable of alot more than it is showing you so far, just take some time to get to know your car.
    1999 T/A WS6 Black -------SOLD
    05 mustang Roush sport;
    DOB manifold, m122 SC, 47lb injectors, gt500 TB, roush TVS CAI, Detroit rocker SC grind camshafts, Mac LTs, off road x, roush off road mufflers, roush short throw shifter, kenne bell BAP, Brenspeed 93 octane tune. 479rwhp 436ftlbs SAE.

  12. #12
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    Red
    1996 TransAM Supercharged

    I don't see that much wheel spin. I have MT ET Streets and a linelock. I got better 0-60's driving around the linelock versus nuking the tires in the water.

    Next time out I'm going to experiment with coming out at 2000 or so instead of 3-4K. And when I dynoed it the HP and torque were still rising at the 6000 rev limiter. I think I could raise it to 6300-6500. I wonder what is safe with our cars with a stock engine. I know I have to learn it yet. I think the trans needs some work too because it will grind going into 3rd and skip from 2nd to 5th a lot too. My old rock-crusher in my BB Cutlass was a lot easier to shift. I just have to get used to the car more. It's a learning process!

  13. #13
    Senior Member Zboner's Avatar
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    i have the same problem man, i spin really hard with my MT ET streets, best 60' so far was a 2.1, but my MPH is 112 though. i have serious traction issues

  14. #14
    Internet Police
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    2003 Mustang Cobra

    the problem here is not so much the launch but the MPH, it makes no sense whatsoever you should be trapping AT LEAST 110MPH but closer to 112MPH. Something is wrong here. You say it makes 280RWHP, At what RPM? Id sort out the tuning issues obviously, it will make you MUCH faster than any other modification at this point.

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