C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

1st Autox with New Forged 406 TPI

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Old 10-19-2013, 09:56 PM
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l98tpi
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Default 1st Autox with New Forged 406 TPI

First autox I got to run last week with the new 406. This was the last run. It was taking some time getting familiar with the increase in power. Ran this on Nitto NT01's and was hard to get them heated up with the temp in the low 70's and cloudy. Can't wait till next year!


Old 10-19-2013, 10:33 PM
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STL94LT1
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Nice run! Car sounds STRONG!!
Old 10-19-2013, 10:46 PM
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Tom400CFI
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Looks like fun. Sounds awesome. How did you rank for the day?

A lot of pedal pumping through that slalom, IMO.
Old 10-19-2013, 10:49 PM
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Old 10-19-2013, 11:12 PM
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l98tpi
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Originally Posted by Tom400CFI
Looks like fun. Sounds awesome. How did you rank for the day?

A lot of pedal pumping through that slalom, IMO.
16th out of 80 and the pedal pumping was throttle steering.
Old 10-19-2013, 11:26 PM
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Sweet!
Old 10-20-2013, 10:58 PM
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Nice, good run, where were you running nice big area. We finished up for the year this weekend and already missing it. I didn't get to do all my runs on the last day because of my alternator bearings getting fricked up and it froze up tearing up my belt thus losing my steering & cooling.

Last edited by kimmer; 10-20-2013 at 11:07 PM.
Old 10-21-2013, 03:53 PM
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Race Prepared
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Are you running an automatic transmission? Modifications?
Old 10-21-2013, 10:00 PM
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l98tpi
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Originally Posted by kimmer
Nice, good run, where were you running nice big area. We finished up for the year this weekend and already missing it. I didn't get to do all my runs on the last day because of my alternator bearings getting fricked up and it froze up tearing up my belt thus losing my steering & cooling.
This was my last event for the year and the first run in this car since the engine puked at this course which is a former parking lot at Wilimington Airpark in Wilmington, OH. This place has been a nemesis for me. It took an engine and what appears to be a clutch from my 96. Just to finish the day at this place without a failure was an accomplishment.

Originally Posted by Race Prepared
Are you running an automatic transmission? Modifications?
Yes the trans is a automatic, but not your typical auto. This one is a Stage 4 4L60 with full manual valve body built by RPM Transmissions. It is just like a manual without the clutch. I have a lot of mods. You can check them out in my public profile.
Old 10-21-2013, 10:03 PM
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Originally Posted by l98tpi
16th out of 80 and the pedal pumping was throttle steering.
How far off FTD? Gotta say it again..car sounds delicious! Love it!!
Old 10-21-2013, 10:14 PM
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Crepitus
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Nice no nonsence looking vette. what oil pan/win tray are you using?
Old 10-21-2013, 10:47 PM
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1993C4LT1
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The sound!
Good run
Old 10-21-2013, 10:50 PM
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l98tpi
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Originally Posted by Tom400CFI
How far off FTD? Gotta say it again..car sounds delicious! Love it!!
Take the shifter cart out of the equation and I was @ 3.25 seconds from FTD. I think the shifter cart was about 1.5 sec faster than the fastest car.

Originally Posted by Crepitus
Nice no nonsence looking vette. what oil pan/win tray are you using?
I run a Canton 7qt Road Race pan. I would definitely suggest it or at least a wintage tray for anyone that is running Dot slicks such as Hoosier A6's and has experience. You guys that have been autoxing for a while know you can get well over 1g in corners and all that oil can slosh to one side and possibly starve the engine for oil and there goes the bearings. I am looking hard at an accumulator too.
Old 10-21-2013, 11:13 PM
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Originally Posted by l98tpi
Take the shifter cart out of the equation and I was @ 3.25 seconds from FTD. I think the shifter cart was about 1.5 sec faster than the fastest car.
Nice. That course looked awesome too. Lots of speed, long, and I dig the "drag race to the finish" at the end. It looked like a hoot.

I was 3.7 sec off FTD at the last event I did which was also ~1:00 course. I was surprised and happy about that since I could only get w/in 9 sec of FTD, EDIT: In my C6.

Last edited by Tom400CFI; 10-23-2013 at 11:40 AM.
Old 10-21-2013, 11:25 PM
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Originally Posted by Tom400CFI
Nice. That course looked awesome too. Lots of speed, long, and I dig the "drag race to the finish" at the end. It looked like a hoot.

I was 3.7 sec off FTD at the last event I did which was also ~1:00 course. I was surprised and happy about that since I could only get w/in 9 sec of FTD.
Seat time. These c4's are very competitive once you get acquainted with them.

This last course was a bit of a challenge with several decreasing radius turns. These take some practic to negotiate.
Old 10-23-2013, 09:11 AM
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This year was tough with quite a few breakdowns so I missed a lot of laps but still managed to pick up enough points to take the first place year end award in my class.
Old 10-23-2013, 11:35 AM
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Originally Posted by l98tpi
Seat time. These c4's are very competitive once you get acquainted with them.
Huh? I was 3.7 off FTD on a 1:00 course in a basically stock car, with real street tires. I think that's pretty decent, if I do say so.

EDIT: I realize that I didn't finish my previous post. Edited above.

Last edited by Tom400CFI; 10-23-2013 at 11:43 AM.
Old 10-23-2013, 10:32 PM
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l98tpi
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Originally Posted by kimmer
This year was tough with quite a few breakdowns so I missed a lot of laps but still managed to pick up enough points to take the first place year end award in my class.
Congrats. I wasn't as fortunate. But there is always next year and hopefully I have seen the last of the major drivetrain items letting go for a while.

Originally Posted by Tom400CFI
Huh? I was 3.7 off FTD on a 1:00 course in a basically stock car, with real street tires. I think that's pretty decent, if I do say so.


EDIT: I realize that I didn't finish my previous post. Edited above
.
Wasn't insinuating you needed seat time, just saying that if anyone gets acquainted with the c4's, they can be competitive against other cars even with the c4 in stock form. And as far as autox, a stock c4 with 6spd and 3.45 gears, with a L98 or LT1/4.

Last edited by l98tpi; 10-23-2013 at 10:35 PM.

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