First Trip To Drag Strip
5/2/06, 03:22 PM
#1
Bullitt Member
Thread Starter
Join Date: April 14, 2006
Location: Aurora, CO
Posts: 236
Likes: 0
Received 0 Likes
on
0 Posts
OK, ladies and gentlemen I made my first ever trip to the dragstrip here in Denver and I have to say I am very disappointed. [img]style_emoticons/<#EMO_DIR#>/banghead.gif[/img]
My first run I tried leaving at 2,500 rpm and smoked the tires (not to mention sleeping at the tree); My next run I tried leaving at 2,000 rpm and while I reacted faster I again smoked the tires. My third and final run was my best but still way too pathetic. I left at 1,500 rpms and I got her to hook fairly well but still couldn't muster a decent 1/4 mile.
Now I realize I was running on street tires (Pirelli P-Zero Nero 285/40ZR-18 rear and 255/45ZR-18 front) and I'm at a high altitude (5860 feet) but with my 4.10 gears, freeflowing exhaust, cold air kit, and custom tune I expected to be will into the 13's; What am I missing here? [img]style_emoticons/<#EMO_DIR#>/dunno.gif[/img] Suggestions?
1ST RUN (10:15am/59 degrees/57 humidity)
R/T .728
60' 2.392
330 6.683
1/8 10.126
MPH 72.42
1000 13.072
1/4 15.572
MPH 85.65
2ND RUN (1:49pm/75 degrees/42 humidity)
R/T .553
60' 2.531
330 6.675
1/8 10.072
MPH 73.15
1000 12.932
1/4 15.552
MPH 86.83
3RD RUN (6:19pm/63 degrees/64 humidity)
R/T .445
60' 2.260
330 6.422
1/8 9.793
MPH 73.79
1000 12.635
1/4 15.068
MPH 93.00
My first run I tried leaving at 2,500 rpm and smoked the tires (not to mention sleeping at the tree); My next run I tried leaving at 2,000 rpm and while I reacted faster I again smoked the tires. My third and final run was my best but still way too pathetic. I left at 1,500 rpms and I got her to hook fairly well but still couldn't muster a decent 1/4 mile.
Now I realize I was running on street tires (Pirelli P-Zero Nero 285/40ZR-18 rear and 255/45ZR-18 front) and I'm at a high altitude (5860 feet) but with my 4.10 gears, freeflowing exhaust, cold air kit, and custom tune I expected to be will into the 13's; What am I missing here? [img]style_emoticons/<#EMO_DIR#>/dunno.gif[/img] Suggestions?
1ST RUN (10:15am/59 degrees/57 humidity)
R/T .728
60' 2.392
330 6.683
1/8 10.126
MPH 72.42
1000 13.072
1/4 15.572
MPH 85.65
2ND RUN (1:49pm/75 degrees/42 humidity)
R/T .553
60' 2.531
330 6.675
1/8 10.072
MPH 73.15
1000 12.932
1/4 15.552
MPH 86.83
3RD RUN (6:19pm/63 degrees/64 humidity)
R/T .445
60' 2.260
330 6.422
1/8 9.793
MPH 73.79
1000 12.635
1/4 15.068
MPH 93.00
5/2/06, 03:46 PM
#2
Join Date: January 30, 2004
Location: DMV
Posts: 2,980
Likes: 0
Received 0 Likes
on
0 Posts
That's probably not too bad for a V6 (per your info) up a mile high, especially your final run showing a 93 mph trap. Did you get your custom tune done at altitude or down in the lowlands?
5/2/06, 03:51 PM
#3
Bullitt Member
Thread Starter
Join Date: April 14, 2006
Location: Aurora, CO
Posts: 236
Likes: 0
Received 0 Likes
on
0 Posts
<div class='quotetop'>QUOTE(rhumb @ May 2, 2006, 3:49 PM) Quoted post</div><div class='quotemain'>
That's probably not too bad for a V6 (per your info) up a mile high, especially your final run showing a 93 mph trap. Did you get your custom tune done at altitude or down in the lowlands?
[/b][/quote]
Ummm, no...I'm a GT; You're seeing me listed as a V-6 member (meaning I haven't posted enough to raise myself to the next level)
That's probably not too bad for a V6 (per your info) up a mile high, especially your final run showing a 93 mph trap. Did you get your custom tune done at altitude or down in the lowlands?
[/b][/quote]
Ummm, no...I'm a GT; You're seeing me listed as a V-6 member (meaning I haven't posted enough to raise myself to the next level)
5/2/06, 04:19 PM
#4
FR500 Member
Join Date: August 23, 2004
Posts: 3,153
Likes: 0
Received 0 Likes
on
0 Posts
Any other similar 05's out at your track running 13's? Altitude means A LOT. I lose about 2 tenths for being at 1,200 ft and you're at 5860. That says it all right there to me.
When comparing times, you need to compare with people running at your track. Comparing your times with someone who's close to sea level will leave you disappointed everytime.
When comparing times, you need to compare with people running at your track. Comparing your times with someone who's close to sea level will leave you disappointed everytime.
5/2/06, 04:37 PM
#5
Bullitt Member
Thread Starter
Join Date: April 14, 2006
Location: Aurora, CO
Posts: 236
Likes: 0
Received 0 Likes
on
0 Posts
<div class='quotetop'>QUOTE(SixtySix @ May 2, 2006, 4:22 PM) Quoted post</div><div class='quotemain'>
Any other similar 05's out at your track running 13's? Altitude means A LOT. I lose about 2 tenths for being at 1,200 ft and you're at 5860. That says it all right there to me.
When comparing times, you need to compare with people running at your track. Comparing your times with someone who's close to sea level will leave you disappointed everytime.
[/b][/quote]
Well as a comparison the last race was against a stock 2003 or 2004 Cobra coupe. Here are his specs.
R/T .538
60' 2.296
330 6.320
1/8 9.581
MPH 74.58
1000 12.421
1/4 14.812
MPH 95.00
Now no offense to the owners of the last generation Cobra, but I would have expected to easily pull away from him; And there was a 2005 GT automatic (only modification being a set of 3.55 gears) that ran 15.10 all day. I can't believe my 4.10 gears and other mods only added up to a .04 difference.
Now I will say it pulled hard right up to the 6,000 rpm mark and at the top of the track I was right at 6,000 in third. I didn't want to take her any higher into the rpm range since all her internals are factory stock.
Any other similar 05's out at your track running 13's? Altitude means A LOT. I lose about 2 tenths for being at 1,200 ft and you're at 5860. That says it all right there to me.
When comparing times, you need to compare with people running at your track. Comparing your times with someone who's close to sea level will leave you disappointed everytime.
[/b][/quote]
Well as a comparison the last race was against a stock 2003 or 2004 Cobra coupe. Here are his specs.
R/T .538
60' 2.296
330 6.320
1/8 9.581
MPH 74.58
1000 12.421
1/4 14.812
MPH 95.00
Now no offense to the owners of the last generation Cobra, but I would have expected to easily pull away from him; And there was a 2005 GT automatic (only modification being a set of 3.55 gears) that ran 15.10 all day. I can't believe my 4.10 gears and other mods only added up to a .04 difference.
Now I will say it pulled hard right up to the 6,000 rpm mark and at the top of the track I was right at 6,000 in third. I didn't want to take her any higher into the rpm range since all her internals are factory stock.
5/3/06, 08:46 AM
#6
Bullitt Member
Join Date: December 31, 2004
Posts: 389
Likes: 0
Received 0 Likes
on
0 Posts
I thought all 03/04 cobra's came with blowers, shows how much I know.
My best modified is in the 13.8 @ 101mph range for the 1/4 and 8.8 @ 81mph for the 1/8 at around 1100/1200 ft alt. and a 2.0-2.1 short time.
Like Tony said, find other cars similiar and see what they're running and what mph. I'd say MPH is much more important at this stage than ET. You can have a lousy 60 time but your mph will still indicate how strong your engine is running.
good luck
My best modified is in the 13.8 @ 101mph range for the 1/4 and 8.8 @ 81mph for the 1/8 at around 1100/1200 ft alt. and a 2.0-2.1 short time.
Like Tony said, find other cars similiar and see what they're running and what mph. I'd say MPH is much more important at this stage than ET. You can have a lousy 60 time but your mph will still indicate how strong your engine is running.
good luck
5/3/06, 09:56 AM
#7
Bullitt Member
Join Date: January 11, 2005
Posts: 377
Likes: 0
Received 0 Likes
on
0 Posts
Now no offense to the owners of the last generation Cobra, but I would have expected to easily pull away from him; And there was a 2005 GT automatic (only modification being a set of 3.55 gears) that ran 15.10 all day. I can't believe my 4.10 gears and other mods only added up to a .04 difference.
Even with your mods, I think a stock 03-04 cobra would still be able to beat you.
Even with your mods, I think a stock 03-04 cobra would still be able to beat you.
5/3/06, 10:43 AM
#8
You need to be launching at 3000 rpms, 2000 is too low. Your 60' is way too high. You should at least be able to pull a 2.0 with stock tires. Altitude shouldn't matter because you can just rev higher.
5/3/06, 10:51 AM
#9
Bullitt Member
Thread Starter
Join Date: April 14, 2006
Location: Aurora, CO
Posts: 236
Likes: 0
Received 0 Likes
on
0 Posts
<div class='quotetop'>QUOTE(dustindu4 @ May 3, 2006, 10:46 AM) Quoted post</div><div class='quotemain'>
You need to be launching at 3000 rpms, 2000 is too low. Your 60' is way too high. You should at least be able to pull a 2.0 with stock tires. Altitude shouldn't matter because you can just rev higher.
[/b][/quote]
Yeah, but if I'm smoking the tires leaving at 2,500 rpm and then again leaving at 2,000 then I'm really going to smoke the tires leaving at 3,000 rpm. The only way I could get the car to remotely hook up was to leave at 1,500 rpm which produced the best run of the day.
You need to be launching at 3000 rpms, 2000 is too low. Your 60' is way too high. You should at least be able to pull a 2.0 with stock tires. Altitude shouldn't matter because you can just rev higher.
[/b][/quote]
Yeah, but if I'm smoking the tires leaving at 2,500 rpm and then again leaving at 2,000 then I'm really going to smoke the tires leaving at 3,000 rpm. The only way I could get the car to remotely hook up was to leave at 1,500 rpm which produced the best run of the day.
5/3/06, 11:40 AM
#11
Bullitt Member
Join Date: December 31, 2004
Posts: 389
Likes: 0
Received 0 Likes
on
0 Posts
<div class='quotetop'>QUOTE(emperorjordan @ May 3, 2006, 12:00 PM) Quoted post</div><div class='quotemain'>
all 03-04 cobras do have blowers and 390hp.
[/b][/quote]
Guess I'm not as stupid as my wife tells me I am...
351pony, unless the Cobra was just sitting there spinning there is no way on earth you'd have a chance against him and you SHOULD NOT be using an 03/04 Cobra as a comparison car. Could you have maybe meant it's a late 90's Cobra? The times posted would be more indicative to something of the 90's era more than a blown 03/04.
all 03-04 cobras do have blowers and 390hp.
[/b][/quote]
Guess I'm not as stupid as my wife tells me I am...
351pony, unless the Cobra was just sitting there spinning there is no way on earth you'd have a chance against him and you SHOULD NOT be using an 03/04 Cobra as a comparison car. Could you have maybe meant it's a late 90's Cobra? The times posted would be more indicative to something of the 90's era more than a blown 03/04.
5/3/06, 01:22 PM
#13
Bullitt Member
Join Date: January 11, 2005
Posts: 377
Likes: 0
Received 0 Likes
on
0 Posts
<div class='quotetop'>QUOTE(dustindu4 @ May 3, 2006, 11:58 AM) Quoted post</div><div class='quotemain'>
oh yeah you have 4.10s
Your tires should spin a little bit for like 5 feet off the line then bite down. Those 4.10s are not helping you without slicks.
[/b][/quote]
I'm pulling 1.9 60' times with 4.10's and stock pirellis
oh yeah you have 4.10s
Your tires should spin a little bit for like 5 feet off the line then bite down. Those 4.10s are not helping you without slicks.
[/b][/quote]
I'm pulling 1.9 60' times with 4.10's and stock pirellis
5/3/06, 02:20 PM
#16
Bullitt Member
Join Date: September 13, 2005
Posts: 343
Likes: 0
Received 0 Likes
on
0 Posts
<div class='quotetop'>QUOTE(351pony @ May 2, 2006, 4:40 PM) Quoted post</div><div class='quotemain'>
Well as a comparison the last race was against a stock 2003 or 2004 Cobra coupe. Here are his specs.
R/T .538
60' 2.296
330 6.320
1/8 9.581
MPH 74.58
1000 12.421
1/4 14.812
MPH 95.00
Now no offense to the owners of the last generation Cobra, but I would have expected to easily pull away from him;
[/b][/quote]
Definitely an issue with altitude, Automatic 05's with just gears should pull mid 13's. The Cobra stock should be pulling mid 12's.
Oh and you will get your hiney handed to you by an 03/04 Cobra...they are supercharged 4V V8's with and under-rated 390 hp. With a few cheap bolt-ons these cars push upwards of 475 rwhp.
Well as a comparison the last race was against a stock 2003 or 2004 Cobra coupe. Here are his specs.
R/T .538
60' 2.296
330 6.320
1/8 9.581
MPH 74.58
1000 12.421
1/4 14.812
MPH 95.00
Now no offense to the owners of the last generation Cobra, but I would have expected to easily pull away from him;
[/b][/quote]
Definitely an issue with altitude, Automatic 05's with just gears should pull mid 13's. The Cobra stock should be pulling mid 12's.
Oh and you will get your hiney handed to you by an 03/04 Cobra...they are supercharged 4V V8's with and under-rated 390 hp. With a few cheap bolt-ons these cars push upwards of 475 rwhp.
5/3/06, 05:14 PM
#19
Bullitt Member
Thread Starter
Join Date: April 14, 2006
Location: Aurora, CO
Posts: 236
Likes: 0
Received 0 Likes
on
0 Posts
<div class='quotetop'>QUOTE(TexaStang @ May 3, 2006, 4:16 PM) Quoted post</div><div class='quotemain'>
Launch better and you will be fine.
Yes, altitude makes that much difference folks.
[/b][/quote]
OK, so just so I'm clear at what RPM should I launch? Now remember I'm a GT with a five-speed. It seems I can't go any higher then 1,500 RPMs if I want any chance of hooking up.
Other then buying a set of slicks, is there anything else I can do to help with weight transfer and ultimately traction? At some point I plan on adding a supercharger so if I'm having traction issues now I can't imagine what it'll be like with +/- 100 more horsepower. [img]style_emoticons/<#EMO_DIR#>/dunno.gif[/img]
Launch better and you will be fine.
Yes, altitude makes that much difference folks.
[/b][/quote]
OK, so just so I'm clear at what RPM should I launch? Now remember I'm a GT with a five-speed. It seems I can't go any higher then 1,500 RPMs if I want any chance of hooking up.
Other then buying a set of slicks, is there anything else I can do to help with weight transfer and ultimately traction? At some point I plan on adding a supercharger so if I'm having traction issues now I can't imagine what it'll be like with +/- 100 more horsepower. [img]style_emoticons/<#EMO_DIR#>/dunno.gif[/img]
5/3/06, 06:50 PM
#20
Mach 1 Member
Join Date: October 20, 2005
Posts: 717
Likes: 0
Received 0 Likes
on
0 Posts
Any higher than 1500 and you can't hook at the track? I hook no problem at around 2000-2500 on our 1/8th mile and I always thought it was rather poorly prepped.
My thing is that I feel like I have too much traction and not enough cajones under the hood. Can't break it loose on the street for the life of me unless I dump at 3500 , of course, that's not really a bad thing I guess.
Maybe I have just gotten used to it, I do drive it a lot...Well, we'll see what the dyno says on Thursday!
My thing is that I feel like I have too much traction and not enough cajones under the hood. Can't break it loose on the street for the life of me unless I dump at 3500 , of course, that's not really a bad thing I guess.
Maybe I have just gotten used to it, I do drive it a lot...Well, we'll see what the dyno says on Thursday!