Results from e-town on LT4 conversion to an A4
#1
Melting Slicks
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Results from e-town on LT4 conversion to an A4
Many of you that know as from e-town know that we converted my Dad's LT4 corvette to an A4 using stock components from a 1996 LT1.
We have been testing the car over the past few weeks at Raceway Park, Englishtown, NJ and the results have been remarkable despite the hot weather. We are running et's consistently in 12.6's to 12.7's and in the cooler weather last wednesday went a 12.48.
Other mods include a GM hot cam, 4:10 gears, BFG 315 DR's and a heavy duty radiator with a 160 thermo. Most everything else on the car is stock including the stock exhaust manifolds (it does have Borla mufflers though).
We converted the car primarily because we use it as a drag car, and unfortunately my Dad had a helluva a time driving the 6M consistently (he's not the only one). Plus I got tired of changing worn out clutches every three months ;) .
So if consistentcy was the goal, then the car has far exceeded our expectations. Check out the data below. My Dad took 2nd place in the GM Hi Tech performance race in the AM session on July 14th. He handed the keys to me for the PM session of the Cartek Corvette Challenge, were I lost to REDGAR in the semi's. As John Mackey says, converting to an A4 was "the best thing you could ever do!"
The most amazing thing has been the improvement in the 60' time. With the 6M, an average day would yeild 60' that were anywhere from 1.85 to 2.00. We considered a 1.80 to be VERY good. The A4 rarely has a 60' greater than 1.80.
We will be looking for very low 12's once the weather turns cool. And who knows, maybe next we'll port the heads!
Note: bold entries in the table above are new personal records.
We have been testing the car over the past few weeks at Raceway Park, Englishtown, NJ and the results have been remarkable despite the hot weather. We are running et's consistently in 12.6's to 12.7's and in the cooler weather last wednesday went a 12.48.
Other mods include a GM hot cam, 4:10 gears, BFG 315 DR's and a heavy duty radiator with a 160 thermo. Most everything else on the car is stock including the stock exhaust manifolds (it does have Borla mufflers though).
We converted the car primarily because we use it as a drag car, and unfortunately my Dad had a helluva a time driving the 6M consistently (he's not the only one). Plus I got tired of changing worn out clutches every three months ;) .
So if consistentcy was the goal, then the car has far exceeded our expectations. Check out the data below. My Dad took 2nd place in the GM Hi Tech performance race in the AM session on July 14th. He handed the keys to me for the PM session of the Cartek Corvette Challenge, were I lost to REDGAR in the semi's. As John Mackey says, converting to an A4 was "the best thing you could ever do!"
The most amazing thing has been the improvement in the 60' time. With the 6M, an average day would yeild 60' that were anywhere from 1.85 to 2.00. We considered a 1.80 to be VERY good. The A4 rarely has a 60' greater than 1.80.
We will be looking for very low 12's once the weather turns cool. And who knows, maybe next we'll port the heads!
Note: bold entries in the table above are new personal records.
#3
Le Mans Master
Re: Results from e-town on LT4 conversion to an A4 (Alchemist)
The car is deffinatly hooking better. I saw your Dad when we got there and he said he was still running in the GM race, I said I guess he was happy with the conversion. :D
#5
Melting Slicks
Thread Starter
Re: Results from e-town on LT4 conversion to an A4 (LT4POWR)
What kind of converter??
Also some people have asked for some "before" data.
Here's some data from last year. The car was in the same configuration except with the 6M and with a single mass flywheel. I picked a day that had similar weather conditions to this past Saturday.
[Modified by Eric Fischer, 2:04 PM 7/16/2002]
#6
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Re: Results from e-town on LT4 conversion to an A4 (Eric Fischer)
im glad you posted this. my friends all ask why i own an automatic.....they dont believe an automatic is faster. you just proved them wrong! :yesnod: :cheers:
#7
Le Mans Master
Re: Results from e-town on LT4 conversion to an A4 (Eric Fischer)
Now that you have an A4 in it, do you think you'll change out the 4:10's to 3:73's? How is the auto with 4:10's?
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Re: Results from e-town on LT4 conversion to an A4 (yoslambo1@cs.com)
im glad you posted this. my friends all ask why i own an automatic.....they dont believe an automatic is faster. you just proved them wrong! :yesnod: :cheers:
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Re: Results from e-town on LT4 conversion to an A4 (Mojo)
im glad you posted this. my friends all ask why i own an automatic.....they dont believe an automatic is faster. you just proved them wrong! :yesnod: :cheers:
The auto is not faster, just more *consistant* with a driver who isn't good at paddling gears.
The auto is not faster, just more *consistant* with a driver who isn't good at paddling gears.
#10
Melting Slicks
Thread Starter
Re: Results from e-town on LT4 conversion to an A4 (Zix)
Now that you have an A4 in it, do you think you'll change out the 4:10's to 3:73's? How is the auto with 4:10's?
#11
Melting Slicks
Thread Starter
Re: Results from e-town on LT4 conversion to an A4 (Mojo)
The auto is not faster, just more *consistant* with a driver who isn't good at paddling gears.
I think the car on average will be consistently faster too - i.e. as long as the track cooperates the car will routinely run 12.4's to 12.7's depending on the weather.
The A4 just launches harder and more consistently than a 6M (at least on drag radials). The 6M can be made to be consistent (big tires or slicks, rev limiter for launch, etc), but you still run the risk of missing a shift. Somedays, with the 6M I could launch as high as 5000 RPM without wheelspin. Other days it would spin at 3000 RPM and I would have to slip the clutch to get a decent launch...
#13
Drifting
Re: Results from e-town on LT4 conversion to an A4 (Eric Fischer)
Eric, excellent results. This fall/winter I'll be going the LT4 conversion/HotCam route with my LT1. I'm having the tranny gone through also and your specs have me feeling better about an LT4/A4 combo.
#15
Melting Slicks
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Re: Results from e-town on LT4 conversion to an A4 (dizwiz24)
Adding an A4 would probably hurt resale.
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Re: Results from e-town on LT4 conversion to an A4 (Eric Fischer)
It's all about control to me. I'd much rather shift my standard than have the little imaginary guy inside my automatic do it for me. If you're looking for *Consistancy*, then I think an automatic is for you. As for me, I love to know I can run each and every gear in my box out to 15,000 RPM if I wanted to, if only the car would stay together. I'll risk missing a shift, and having to swap clutches. For straight lines... automatics are less work, road racing...fuggedabout it. But I guess it's like a Chevy / Ford discussion...... Eric, congrats on your times, very good looking to me! I'm glad you're getting the numbers you were looking for, and then some! I'm off to hit the limiter, drop the clutch, and leave this discussion! :seeya
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Re: Results from e-town on LT4 conversion to an A4 (93TorchRedC4)
It's all about control to me. I'd much rather shift my standard than have the little imaginary guy inside my automatic do it for me. If you're looking for *Consistancy*, then I think an automatic is for you. As for me, I love to know I can run each and every gear in my box out to 15,000 RPM if I wanted to, if only the car would stay together. I'll risk missing a shift, and having to swap clutches. For straight lines... automatics are less work, road racing...fuggedabout it. But I guess it's like a Chevy / Ford discussion...... Eric, congrats on your times, very good looking to me! I'm glad you're getting the numbers you were looking for, and then some! I'm off to hit the limiter, drop the clutch, and leave this discussion! :seeya
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Re: Results from e-town on LT4 conversion to an A4 (95AquaC4)
:yesnod: Hey Aqua, how about you and me play with our little toys around town some day. I know you out mod me, but can you out drive me? :boxing
#20
Le Mans Master
Re: Results from e-town on LT4 conversion to an A4 (93TorchRedC4)
Interesting results. You lost a couple of mph, but picked up a couple of tenths due to a better 60' time. :cheers: