I have a question about times...

[DarkShadow]

After reading EclipseGTSDude's thread about his times and reading a few others, I'm discovering that almost stock GT's run the same 1/8th mile times as me. How is that possible when I have almost 100 more hp than a stock GT? Yet, when I took it, to the track, there was a GT that was spraying that didn't have the top speed I had, don't know about times because they were just showing speeds that night. So what's going on? I would also have thought that with about 330 to the wheels I should be easily in the 8's if not mid 8's...? I know I don't build boost at all in first gear, but WTF? I also don't spin that bad out the hole. Yet I've beeaten stuff on the road that I know beats GT's like my buddies SRT-4. His best time that night was slower than my worst time and I know he beats GT's all the time badly...? What's up here?

[SpectorV]

there are many factors that come into play. 03/04 cobras dont run much better than mid 8s stock I dont believe~ (not 100% sure on that) and manage highish 12s stock in the quarter.

Until you get some practice in and get those numbers consistant and what not you will not know what the car can do. You should be cutting low 60fts (2.1~) etc etc. What were all the numbers on your slip when you went?

And just because you run 9.X in the 8th doesnt mean you will run 14.X in the quarter either you may be faster/slower who knows. Once does not 100% determine the other.

As it currently sits the auto is KILLING your times (and your power @ the wheels), with a tq converter, manual valve bodyshift kit, rear end gears, and good tires you would be amazed at the difference though.

[MarkuzLS1]

Post your full slips again, if you don't mind. I can't remember what you had for 60' and mph and such.

[DarkShadow]

Best one:

Reaction: .5140
60 ft: 2.2670
330 ft: 6.1804
1/8 ET: 9.1896
1/8 MPH: 81.54

Next one:

Reaction: .1123
60 ft: 2.3209
330 ft: 6.2296
1/8 ET: 9.2214
1/8 MPH: 81.86

Last one:

Reaction: .1498
60 ft: 2.3408
330 ft: 6.2940
1/8 ET: 9.3265 (passenger)
1/8 MPH: 80.80

What do ya'll think it would do in a 1/4 track as is? I've heard that the MPH is the biggest factor in how powerful your car is, not neccessarily the ET...

I know I would benefit big time form a tq converter, I don't hardly spin at all in the box so I'm not sure if the tires are really a problem, I don't want to upgrade gears because that can actually hurt a FI car...I really think it's that no boost dead first gear that hurts it the most, that's why my 60ft is so bad...

[SpectorV]

well with a 2.10 60ft you would shave off nearly 4 tenths~ (at least 3) alone. My bet is that you would be in the mid 13s as is~

[bbunt302]

#1) Those 60's are pretty bad. With a set of drag radials and an automatic (much less harsh on the tires than a manual at launch), you should be able to pull off at least a 1.8 60'. That's half a second right there. You'll probably actually lose more than that. They say that every tenth in the 60' is worth nearly two tenths overall (for a 1/4 mile track). I'd say you'd lose right around .7 seconds. Also since you have a turbo, you're gonna want to launch the car at a decent RPM. I've never raced an automatic though, so I can't tell you the best method to do so.

#2) Like Brandon said: torque converter and shift kit. Once again, I'm far from an expert on automatics. But from what I understand, they are very important to running decent times.

#3) Don't fear the gear.

[DarkShadow]

Yeah I do need to pull down that 60 ft, but I don't want to put drags on it because I don't want to buy a new rear end the next day. I haven't really been watching my rpm's, I need to. I think~ I've been launching pretty soft with the power braking, I'm going to try for a launch at around 3k this Saturday...

Gears can actually hurt the forced induction cars times because they don't put enough load on the blower, or something like that.

[Danger Dude]

Quote: Originally Posted by DarkShadow Yeah I do need to pull down that 60 ft, but I don't want to put drags on it because I don't want to buy a new rear end the next day. I haven't really been watching my rpm's, I need to. I think~ I've been launching pretty soft with the power braking, I'm going to try for a launch at around 3k this Saturday... Gears can actually hurt the forced induction cars times because they don't put enough load on the blower, or something like that.

Actually drag radials are not that bad on the 7.5 as much as big ass slicks. Since you are not building crazy HP at the bottom there is very minimal risk of major failure.

I am not sure I buy the not doing gears because of forced induction. Do you have open differential or a Tloc. I would consider getting a PATC Transmission like I have to help quite a bit at launch. I have a 2500 stall TQ and a PATC Interceptor 4R70W tranny

[bbunt302]

Quote: Originally Posted by Danger Dude Actually drag radials are not that bad on the 7.5 as much as big ass slicks. Since you are not building crazy HP at the bottom there is very minimal risk of major failure.

This is true. Plus the fact that automatics are no where near as bad as manuals on them. I think you should be okay, but I guess you never know with the 7.5s.

I also not to sure about the gears and boost deal... I know some people recommend lower (numerically) gears just due to traction issues, especially in set-ups where the boost comes in at low RPMs. However, a higher (once again, numerically) gear will get you into boost much quicker. If I were you, I'd have to at least put some 3.73s in there.

[Danger Dude]

Quote: Originally Posted by bbunt302 This is true. Plus the fact that automatics are no where near as bad as manuals on them. I think you should be okay, but I guess you never know with the 7.5s. I also not to sure about the gears and boost deal... I know some people recommend lower (numerically) gears just due to traction issues, especially in set-ups where the boost comes in at low RPMs. However, a higher (once again, numerically) gear will get you into boost much quicker. If I were you, I'd have to at least put some 3.73s in there.

I concur 100%

[SpectorV]

if he can only brake TQ to 1500rpms~ what good will slicks do him if he doesnt break traction as he currently sits?

[DarkShadow]

Right, I think~ I've been launching somewhere around 2k without really breaking traction...

I've always been told by those who already had 3.73's put in or 4.10's that they don't allow the turbo/sc spool up enough. I've also been told by Andy and _J_, so forth that stock gearing is fine, maybe 3.55, but no higher than that....

[Dom]

I would ask Matt and see what he is running out back.

[DarkShadow]

ET street drag radials I believe. I doubt he has the stock rear.

[SpectorV]

your car would probably run slower times if you run slicks on your car as long as you are not having major traction issues. If you could rev her up to about 3k or 4k and launch on some DRs or Slicks you would run an AMAZING time.

[DarkShadow]

I'm thinking if I rev up to 3k or 4k I will have traction issues so better tires may help yet.

[SpectorV]

well you currently can not do that, the tq converter wont let you

[DarkShadow]

Indeed.

[DarkShadow]

Someone give me a link already to a 3k stall converter. I've been trying to find one to no avail.