I just borrowed my friends GTech Pro and took it out for a spin. I have never been to the track because I have a vert and they wouldn't let me run.
Anyway, car is 2004 Z51 Vert with 415 rwhp and 380 rwt. Tires are Michelin PS2 305/30/19. Trans is A4 with 3.42 rear gears.
Best I could get was a 12.8 @ 111. 2.0 60'. Why is my car so slow? I thought for sure I would be low 12's. I launched from idle or else I would get wheel spin, also got some spin in 2nd.
GTech's aren't known for their pinpoint accuracy. I would just go to the track if I were you and see what it really runs even if it means getting kicked off on the first pass.
i went once with my buddies, and they wouldn't even let me on after tech check. Popped the hood and saw the FAST, headers, etc heard the cam lope and said no way.
GTech's aren't known for their pinpoint accuracy. I would just go to the track if I were you and see what it really runs even if it means getting kicked off on the first pass.
Then sign up for a track rental day, they tend to be a little more lienient. Also, the tires you have won't help much at the drag strip, might want to borrow some drag radials.
I just borrowed my friends GTech Pro and took it out for a spin. I have never been to the track because I have a vert and they wouldn't let me run.
Anyway, car is 2004 Z51 Vert with 415 rwhp and 380 rwt. Tires are Michelin PS2 305/30/19. Trans is A4 with 3.42 rear gears.
Best I could get was a 12.8 @ 111. 2.0 60'. Why is my car so slow? I thought for sure I would be low 12's. I launched from idle or else I would get wheel spin, also got some spin in 2nd.
Any ideas?
Not trying to be a jerk,but I find it hard to believe that your engine is producing 415 rwhp. If the GTech Pro is anywhere near accurate then that 111 mph says no way. My old combo made 395rwhp and trapped at 118/121 depending on the DA.
Not being an automatic guy (no expert),but I would think that a good 3200 torque converter would certainly bring that car to life.
Typically auto trans cars don't trap as high when compared to manual trans with the same HP.
As others have said, a couple things should be noted.
Nothing will give you numbers as accurate as going to the track. Find a rental. As mentioned above, they tend to be more lenient. They are for me and I too, have a vert.
How many times have you tried to launch? Seat time makes a lot of difference. You need to learn the sweet spot of your car and how to get the most from every launch. No on can expect to go out and get the best out of their car with only 5 or 6 launches. Try 40-50 to get dialed in to your particular set-up.
Drag radials will also help.
You should be in the 11s with drag radials on a well prepped track.
Good luck
__________________
Hi, My name is Pete...
I am a Speedaholic, I'm addicted and its taken over my life. I dont want to get better, I just want to go faster.
2004 Commemorative Edition 6 spd Vert
Tuned by Doug@ECS
354 RWHP - 352 RWTQ
11.33@119mph, 1.54 60'
Kooks Headers/X-Pipe - no cats, Z06 Ti cat-back
UD pulley, BBK CAI, 4.10 gears, Hoosier drag radials/GTO skinnys
Not trying to be a jerk,but I find it hard to believe that your engine is producing 415 rwhp. If the GTech Pro is anywhere near accurate then that 111 mph says no way. My old combo made 395rwhp and trapped at 118/121 depending on the DA.
Not being an automatic guy (no expert),but I would think that a good 3200 torque converter would certainly bring that car to life.
You are not being a jerk but I have had it dyno'd two times, orginally by Charlie at RPM and then again at my local dyno. Both times, same results. This car has the combo and is making that power.
Typically auto trans cars don't trap as high when compared to manual trans with the same HP.
As others have said, a couple things should be noted.
Nothing will give you numbers as accurate as going to the track. Find a rental. As mentioned above, they tend to be more lenient. They are for me and I too, have a vert.
How many times have you tried to launch? Seat time makes a lot of difference. You need to learn the sweet spot of your car and how to get the most from every launch. No on can expect to go out and get the best out of their car with only 5 or 6 launches. Try 40-50 to get dialed in to your particular set-up.
Drag radials will also help.
You should be in the 11s with drag radials on a well prepped track.
Good luck
I am no newbie to drag racing, my last vette was 565 rwhp and since it was a hard top and the local track was 30 mins away, I was there almost every Friday night and have made hundreds of passes. Albeit it was a stick and this is an auto. But all things even, I would assume the auto is easier to drag and get consistent times, correct???
At this point it seems I need to find a lenient track and or track day. I am not going to believe in the GTech.
IAlbeit it was a stick and this is an auto. But all things even, I would assume the auto is easier to drag and get consistent times, correct???
At this point it seems I need to find a lenient track and or track day. I am not going to believe in the GTech.
Yes an auto should be easier to be consistent with. As you know, just some practice and a lenient track official, and you'll be out having a blast.
Good luck
__________________
Hi, My name is Pete...
I am a Speedaholic, I'm addicted and its taken over my life. I dont want to get better, I just want to go faster.
2004 Commemorative Edition 6 spd Vert
Tuned by Doug@ECS
354 RWHP - 352 RWTQ
11.33@119mph, 1.54 60'
Kooks Headers/X-Pipe - no cats, Z06 Ti cat-back
UD pulley, BBK CAI, 4.10 gears, Hoosier drag radials/GTO skinnys
You could always find a hardtop car with a known et/mph and then race "in mexico". While the "track officials" "in mexico" are a bit less lenient there are far fewer than you will find at a dragstrip.
I just borrowed my friends GTech Pro and took it out for a spin. I have never been to the track because I have a vert and they wouldn't let me run.
Anyway, car is 2004 Z51 Vert with 415 rwhp and 380 rwt. Tires are Michelin PS2 305/30/19. Trans is A4 with 3.42 rear gears.
Best I could get was a 12.8 @ 111. 2.0 60'. Why is my car so slow? I thought for sure I would be low 12's. I launched from idle or else I would get wheel spin, also got some spin in 2nd.
Any ideas?
You need traction and to test it on a track. tire spin in first and second = slow times.
If so then the numbers mean nothing. If you can't drive on the strip, then GTech numbers mean nothing, as they are really accurate in comparison testing, but, you need a baseline.
If so then the numbers mean nothing. If you can't drive on the strip, then GTech numbers mean nothing, as they are really accurate in comparison testing, but, you need a baseline.
Have fun with your car!
Am I have fun? Oh heck ya!!! But there can always be more fun, such as I am considering a 3200 stall tc. I wanted to run numbers where I am at and then again after the swap. For that I guess the Gtech does help.
But my other reason and I know street racing is illegal, but for bench racing sake, say I wanted to know if my car could hang with a Porsche Turbo, or a GTR, or something like that. Numbers are important to know for that reason.
I think I will have to either get some kind of roll cage that hopefully doesn't look awful with the top down, or find a lenient track day.
I am getting the new Toyo R888 soon so I know that will help with 60' times for sure.
Am I have fun? Oh heck ya!!! But there can always be more fun, such as I am considering a 3200 stall tc. I wanted to run numbers where I am at and then again after the swap. For that I guess the Gtech does help.
But my other reason and I know street racing is illegal, but for bench racing sake, say I wanted to know if my car could hang with a Porsche Turbo, or a GTR, or something like that. Numbers are important to know for that reason.
I think I will have to either get some kind of roll cage that hopefully doesn't look awful with the top down, or find a lenient track day.
I am getting the new Toyo R888 soon so I know that will help with 60' times for sure.
what gears you running., 3200 stall use 3.42 and it will give you a good kick in the butt. better yet 3.73 with 3600 stall oh heck ya!!! first time i launched car correctly with 3.73 passengers floor mat ended up on passenger seat and hit head on roll cage. was helmeted
Same...before all the big mods I ran 12.8's with a CAI and a tune.
Well, If we're going to play this game...
I went 12.08 with just a CAI and Drag Radials - stock tune...
__________________
Hi, My name is Pete...
I am a Speedaholic, I'm addicted and its taken over my life. I dont want to get better, I just want to go faster.
2004 Commemorative Edition 6 spd Vert
Tuned by Doug@ECS
354 RWHP - 352 RWTQ
11.33@119mph, 1.54 60'
Kooks Headers/X-Pipe - no cats, Z06 Ti cat-back
UD pulley, BBK CAI, 4.10 gears, Hoosier drag radials/GTO skinnys
You need traction and to test it on a track. tire spin in first and second = slow times.
+1
The G-tech doesn't give a 60ft time. With 19inch wheels and stock converter you could be doing 2.2-2.4 60ft times.
Spin'n ain't Win'n
With that kind of power and street tires you should be able to get 1.9 60 ft. Thats .3-.5 seconds difference and .5 to 1 FULL second MAX difference in the 1/4 mile. Putting you 12.3 to 11.90
Add a stall converter 3000-3500 and 16 inch Drag Radials to clear brakes
(need side wall to hook)
You should be mid 11.6 to 11.3 with a 1.6-1.7 60ft
TRUE STORY!
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Old time 12.03@114.6 1.72 60ft
One owner 77 vette ** LS3 stroker with a CARB! It RUNS! TS&P 418 wicked cubes
00 SLP SS M6 Camaro sold
00 FRC cam and headers 375rwhp with ls1 intake
Corvette Store
Why is my car so slow?
