Very disappointed with G-Tech 1/4 mile times *vid included*
#1
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I did some 1/4 mile runs with the old first-model G-Tech Pro from 1994 last night. Untuned at a track, I ran 13.6 @ 108 mph with a pretty crappy launch. Now I've had my engine tuned but the track is closed so I'm using a G-Tech. I didn't think my launches were super horrible so I can't understand these slow times. Does anyone know whether the G-Tech needs to be oriented perfectly straight forward and back? It's got calibrations for vertical orientation so that's good. And yes, the road is perfectly flat.
![](http://i35.photobucket.com/albums/d200/carebarexc/th_TransAmG-TechRuns.jpg)
I also realize it's speed is about 5 mph fast.
![](http://i35.photobucket.com/albums/d200/carebarexc/th_TransAmG-TechRuns.jpg)
I also realize it's speed is about 5 mph fast.
Last edited by AdsoYo; 09-10-2011 at 02:56 PM.
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#8
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I have a G-tech and have used it several times. I lent it to a friend of mine at the track and he used it on 8 passes. Every single pass the G-tech had him .05-.08 slower, but it was very consistent. The m ph reads higher on the G-tech because it gives you the actual reading at the end of the 1/4 mile instead of the average speed over the last 60 feet. I got sick of it because it would fly off the windshield too much.
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Id just use the g-tech as a off track tool to gauge any improvement in performance when time does not allow any track passes after any changes made to the car.
What size cam you have in that car? Looks like your only shifting at 5800-6000?
What size cam you have in that car? Looks like your only shifting at 5800-6000?
#15
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I used to go to the link in my sig for cam info but Golen doesn't list it on his site anymore for some reason. I believe it's around 224/230 or 226/232, something like that; 112 LSA. When I had it tuned, I told the tuner to stop at 6K and the horsepower curve hadn't started to decline at all. It was totally flat from 5K to 6K. I didn't want to rev super high because this is my dd first, toy second. Making it to the track asap next year is a must because of all this though.
#16
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We used a G-Tech on a 454 Nova we built years ago and it said the car ran from 12.40 @ 108 to 12.20 at 110.
The car actually ran 11.90s @ 112.
http://www.streetfire.net/video/big-...rs_2301957.htm
I just don't think those things are good for much. Maybe with data logging you could get some good info from one, but that is about it in my experience. Back in the day I had a Vericom product. It was far more accurate, but still not as good as going to the track.
The car actually ran 11.90s @ 112.
http://www.streetfire.net/video/big-...rs_2301957.htm
I just don't think those things are good for much. Maybe with data logging you could get some good info from one, but that is about it in my experience. Back in the day I had a Vericom product. It was far more accurate, but still not as good as going to the track.
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hmm that cam sounds similar to a cc503 ish. With that size cam im sure it wants to rev to 6500ish. Im sure your bottom can handle it. Your giving up alot of power by keeping that thing under 6k
#20
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- My 96 m6 z28 when it was bone stock ran 14.0 @ 104.5 2.25 60ft(**** stock tires) on a 90 degree summer day. On the g-tech it ran 13.9-14.0 @ 108-109 same conditions.
- 2000 regal gs ran 13.8 @ 102, 2.0 60ft, 50 degree fall day at Munice. On the g-tech it ran consistent 13.7 @ 107 same conditions, same day.
- A friends 2001 regal GS went 14.0 @ 98 2.1 60ft, 70 degree day at muncie. on g-tech it went 13.9 @ 105. Conditions were slightly better the day we g-tech'd. Early spring, 50ish degrees.
edit* The last run in vid op ran 13.7, wich is only a tenth off from what he ran at the track.
Last edited by kinglt-1; 09-11-2011 at 09:34 PM.