Is a 12.9 possible??? Seriously?
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From: Who says "Nothing is impossible" ? I've been doing nothing for years.
Re: Is a 12.9 possible??? Seriously? (63Banshee)
Simple fisics:eek: you need a certain amount of rear wheel horse power to make it into the 12's somewhere around 300.
Melting Slicks
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From: Toms River NJ
Re: Is a 12.9 possible??? Seriously? (Aaron-74)
from the looks of your desktop dyno #'s its pretty similiar to a zz4
and based on that id think 12.3-1's in perfect conditions...
but desktop dyno could be off and you could be even faster, but on that coin there is still the otherside where the dyno#'s might be optimistic and you could run slower.
only one way to find out!! :yesnod:
and based on that id think 12.3-1's in perfect conditions...
but desktop dyno could be off and you could be even faster, but on that coin there is still the otherside where the dyno#'s might be optimistic and you could run slower.
only one way to find out!! :yesnod:
Melting Slicks
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Re: Is a 12.9 possible??? Seriously? (MotorHead)
Simple fisics:eek: you need a certain amount of rear wheel horse power to make it into the 12's somewhere around 300.
If the car weighs 3600 with driver he will have to have around 330 HP to the ground. Give or take a little.
If it was a 4-speed then I’d say “bring it up to Ennis and I’ll run that 12.9," but that T400 hurts.
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Re: Is a 12.9 possible??? Seriously? (Aaron-74)
365HP@5000 410-lbs@3500 via DD2K
If you are seriously makeing that power at the engine, then you're putting down about 300 hp at the rear wheels.
My setup dyno'd at 245hp and 300ft-lb at the rear wheels and I was running 13.7 @ 102 down at the cruise in this year. That's for my first time ever at a drag strip and my launches left something to be desired.
My setup:
9:1
World Products S/R (POS stock replacement small valve heads)
Torker II intake
Holley double pumper 600cfm carb
General Kinetics 292H cam with 0.516 lift (1.5 full roller rockers)
I'm guessing that I could have been runnign 13.5-13.6 if I'd have known better what I was doing. I think that low 13's would be possible with another 50+ hp. High 12s? Maybe.
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Re: Is a 12.9 possible??? Seriously? (Aaron-74)
You have to be able to put the power to the ground. I found this out when I ran a 12.9 @ 111mph at Keystone Raceway. If you can't put the power to the ground then the power that you have isn't going to do much.
How much does your car weigh (including you)? Considering Desktop Dyno quotes its numbers using horsepower at the flywheel I don't think you are going to be putting down enough power at the rear wheels (especially with that TH400).
There's only one way to find out what you'll run :D. Best of luck to you :cheers:
How much does your car weigh (including you)? Considering Desktop Dyno quotes its numbers using horsepower at the flywheel I don't think you are going to be putting down enough power at the rear wheels (especially with that TH400).
There's only one way to find out what you'll run :D. Best of luck to you :cheers:
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Re: Is a 12.9 possible??? Seriously? (Aaron-74)
You could get 12.90's with your power/weight but only if you can put all of your power to the ground and for the entire 1/4 mile. 4.56 or lower gears, 4,000+ rpm stall converter, and slicks would do the trick. Of course that might spoil your fun the other 99.9% of the time you drive the car :).
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Drifting
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Re: Is a 12.9 possible??? Seriously? (Jman)
I haven't taken it to the track. I have NO clue what it runs. I haven't driven the car in a year. If I make 320RWHP...I think that's enough for a 13.3@100 or so. If..I wanna get on a Dyno before the tracks.
And if I do get to the track 1st, the MPH at the traps will tell me if I'm getting good power down.
[Modified by Aaron-74, 12:22 AM 7/22/2002]
And if I do get to the track 1st, the MPH at the traps will tell me if I'm getting good power down.
[Modified by Aaron-74, 12:22 AM 7/22/2002]
Le Mans Master
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Re: Is a 12.9 possible??? Seriously? (Aaron-74)
Here's the desktop drag times based on what you gave me...
Turbo 400, 3.54 gearing, 3262lbs (95 Corvette aerodynamics: drag coefficient = .32)
agressive driving, perfect weather, stock street tires
13.01 @ 111.8
2.22s 60ft
agressive driving, perfect weather, Hi Performance Street tires
12.482 @ 112.5
2.12s 60ft
[Modified by Jman, 7:00 AM 7/22/2002]
Turbo 400, 3.54 gearing, 3262lbs (95 Corvette aerodynamics: drag coefficient = .32)
agressive driving, perfect weather, stock street tires
13.01 @ 111.8
2.22s 60ft
agressive driving, perfect weather, Hi Performance Street tires
12.482 @ 112.5
2.12s 60ft
[Modified by Jman, 7:00 AM 7/22/2002]
Le Mans Master
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Re: Is a 12.9 possible??? Seriously?
According to desktop drag....My car will run a 12.64 @ 106.9 with a 1.887 60ft on high perf street tires, and a 13.68 @ 105 with a 2.2 60ft with stock street tires. I'm not believing that until I see it.
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Re: Is a 12.9 possible??? Seriously? (Aaron-74)
How much converter do you have? That's going to make a huge difference. IF it really makes the power, you'll be close, but I'm not sure with those heads and cam and compression. It's going to be stretch.
Since you won't have an overabundance of power, you will need to concentrate on traction and weight. It's amazing how quick a car can be without a ton of HP. You just gotta tune it right. Your setup is decidely biased toward great response and mid range power. Without serious head or cam changes, more gear will just slow it down. 4.56's need to be able to make power HARD to the 6500 range.
Work on getting some sticky tires. McCreary dirt tracker tires are still available around here and make a great DOT street/strip tire for low $$$. I've run 10's on L-60 ones.
Good luck.
Jim
Since you won't have an overabundance of power, you will need to concentrate on traction and weight. It's amazing how quick a car can be without a ton of HP. You just gotta tune it right. Your setup is decidely biased toward great response and mid range power. Without serious head or cam changes, more gear will just slow it down. 4.56's need to be able to make power HARD to the 6500 range.
Work on getting some sticky tires. McCreary dirt tracker tires are still available around here and make a great DOT street/strip tire for low $$$. I've run 10's on L-60 ones.
Good luck.
Jim
Thread Starter
Drifting
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Re: Is a 12.9 possible??? Seriously? (427Hotrod)
I've got a stock converter right now. No real need for a bigger one with this cam. I'll be doing a head swap, cam and converter change probably in November or so. Then I'll expect greater numbers. I'd really be happy with a 13.5 right now.
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From: CT
Re: Is a 12.9 possible??? Seriously? (Aaron-74)
you could do it, but you will have to get some tires and a stall converter. The best i did in my car was a couple years ago. I ran a 12.80 @ 105 with 275 RWHP which might be 330-349 flywheel HP. It will take many trips to the track before you would be able to perfect the lauch and shift points.
Melting Slicks
Joined: Apr 1999
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From: Toms River NJ
Re: Is a 12.9 possible??? Seriously? (71,454,4spd)
Yes, I think more than 350 rwhp is needed to run 12.9. Very possible and in your reach.
and like quikvette said..... he has less flywheel HP but did it. but he also has 4.10's...and the track time practice will make a lot of differece
now im going against what i said in my first post :rolleyes: but it all depends on the car setup, conditions, and driver
