Notford95

OK. This was my first time ever drag racing at a track. For some background, I have a 95 Impala SS with a T-56, Tri-y's, Flowmasters, and a Team SS intake and cold air box. I still have 3.08s but my posi is fragged so I shall be doing at least 4.10s in the near future and probably ditching my cats again. All runs on 285/40R17 Potenza RE730s. I also need a reprogram for the six speed. Having said that, this was at "Infineon Raceway" (Sears Point). This was bracket racing with the three yellow lights going on sequentially and all that....

Run# 1
Temp 77
Humidity 58
Barometer 30.01
Dial N/A
R/T 0.699
60 2.709
330 6.886
1/8 10.256
MPH 71.18
1000 13.153
1/4 15.630
MPH 90.33

Run# 2
Temp 68
Humidity 82
Barometer 29.74
Dial 15.00
R/T 0.753
60 2.749
330 6.819
1/8 10.166
MPH 71.30
1000 13.067
1/4 15.497
MPH 91.27

Run# 3
Temp 66
Humidity 83
Barometer 29.68
Dial 15.00
R/T 0.661
60 2.715
330 6.815
1/8 10.114
MPH 72.44
1000 12.981
1/4 15.390
MPH 92.01

Run# 4
Temp 66
Humidity 85
Barometer 29.66
Dial 15.00
R/T 0.612
60 2.742
330 7.264
1/8 10.658
MPH 71.67
1000 13.537
1/4 15.945
MPH 92.13

I spun only on the last run (a bunch). Oddly enough, all of my sixty foot times were equally awful; regardless of traction. After the launch, I feel that I did rather well. I Powershifted the second and third runs and never missed a shift or anything like that. I am beyond bummed about my trap speed. I was under the impression I was making more power than that. There was a bit of a headwind, but still.....92 mph?!?!?! Arrrrgggh. I drove the **** out of my car and was expecting much better success. Any advice or analysis would be greatly appreciated.

Thanks a lot,

Matt



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1995 Impala SS
Tee Fitty-6
Headers and such
Shiny Old Man Car

97bowtie

To tell you the truth, that mph isn't too far off from what I'd expect. Maybe ~ 94-95 mph or so...that could be due to the temp/humidity. That 60' is horrible...get that down to a 2.2 or so and thats a mid 14. Practice.

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'97 Z28 6 speed - Cayenne Red Metallic
CC305 - 112 LSA, Crane Gold 1.6 RRs, Crane 10308 springs, K&N CAI, SLP Shorties, custom offroad y-pipe, borla, Motive 3.73s - TA girdle & stud kit...

13.384 @ 107.42 - 2.186 60' and 90*

Don't question the great...just enjoy us

My '97 Z28

[This message has been edited by 97bowtie (edited August 16, 2002).]

Notford95

Thanks for the reply. I kinda figured that was at least part of the problem. I am hoping the 4.10s and both tires doing stuff will help. I still want to burn my car over the trap speed. Oh well.

97bowtie

Those gears should help that car out a lot. Do you have any pics of the center console with the 6 speed in the car?

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'97 Z28 6 speed - Cayenne Red Metallic
CC305 - 112 LSA, Crane Gold 1.6 RRs, Crane 10308 springs, K&N CAI, SLP Shorties, custom offroad y-pipe, borla, Motive 3.73s - TA girdle & stud kit...

13.384 @ 107.42 - 2.186 60' and 90*

Don't question the great...just enjoy us

My '97 Z28

Notford95

Hehehe......no. You would not want to see them if I had them. My console is still just a stocker without cupholders and a big, gaping hole. Now, if you are curious about what a nice setup looks like....look here. Thanks again.

RacinLT1

The low gears,blown posi,17" radials and 4k lbs arent helping your trap speeds. All in all,thats not a bad time. With good tires,some gears i dont see why it wont be in the 14's,but why so concerned with mph?
From what i see,you dont have any killer performance mods,so the times are about right.

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Dirk
1997 TA A4
11.251@119.3 1.52 60',7.132@95.39 1/8
The RacinLT1
RacinLT1 pic's

Notford95

Racin,

Thanks for your reply. You are correct; I do not have any major performance mods (unless the headers are included in that category). The reason(s) I am so concerned about trap speed is that I am aware that trap speed is the more accurate indicator of actual horsepower when compared with ET. My traps are over 2 mph lower than a stock caprice with a T-56 and (I am assuming) intact limited slip with no other mods. This worries me and I am hoping my car does not have something wrong with it. Also, if it is going to take cam and head work to trap what a stock LT1 F-body does, then i am going to shoot the car and then myself...(kidding). Here is a question for you...would my trap speed increase noticably with a better launch? I was under the impression it will not. Thanks again.

Matt


[This message has been edited by Notford95 (edited August 16, 2002).]

RacinLT1

I cant say whether or not your trap's are on par with other 6 speed caprices seeing that i have never seen 1 run(or 1 at all for that matter). Weather looked good so that isnt much of a factor,any headwind?
Also i JUST looked at the 60' times....horrendus.......get the posi fixed,and or get some gears and get that 60' DOWN,once you get a half decent 60' time,you should see a noticeable difference in et/mph.
Also,make sure you dont have any knock,that will kill mph.

Notford95

There was a considerable headwind. SfGi8nt from this board was there and his prior best was a 102mph trap speed. On this occasion, he trapped 98mph I believe.

slimdawson

I was surprised by the mph too. I am not sure what the corrected time would be but over here, I would expect that car to trap at least 95-97 mph.

I could manage 2.3 60s with a 2.73, auto, tbi 305 with one tire pulling so you definately can improve in that area. Your mph probably won't change but time looks way better. My car actually traps about 1 mph slower when I actually get a good launch as opposed to 2.2-2.3 60s.

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Pix of my rides!
Finally have some pictures of Y2k Vette wheels, motor, etc.

*1991 Camaro RS !LO3
8.65@84.3mph NA
*1988 Mustang 5.0 7.92@87 NA- For Sale
*1988 Mustang GT 'vert
9.56@73-bone stock
*1986 Kawasaki Ninja 1000R 7.30@100mph
*1987 Honda CRX Si 16.5@85mph-stock

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