Auto Drivetrain Weak Links
Thread Starter
Instructor
Joined: Nov 2006
Posts: 102
Likes: 4
Auto Drivetrain Weak Links
My goal is 11.99 ETs with Drag Radials and to have a bullet proof auto drivetrain. After I get the 4l60e rebuilt, are there any other weak links? Do autos need upgraded tq tubes, output shafts or require a DTE brace, or is that only for M6's? Thanks for any help. 
Safety Car
Joined: Apr 2007
Posts: 3,582
Likes: 136
From: SoCal CA
For 11.9's the stocker is enough. I ran 11.5's all day with a stock trans, 3600 stall tc and 3.42 gears. Only a few months ago I got it rebuilt since I want it to hold my 600hp with my new setup. For 11.9 youll be just fine. You dont need a brace, a shaft or all that stuff just yet.
Thread Starter
Instructor
Joined: Nov 2006
Posts: 102
Likes: 4
For 11.9's the stocker is enough. I ran 11.5's all day with a stock trans, 3600 stall tc and 3.42 gears. Only a few months ago I got it rebuilt since I want it to hold my 600hp with my new setup. For 11.9 youll be just fine. You dont need a brace, a shaft or all that stuff just yet.
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Burning Brakes
Joined: May 2006
Posts: 1,049
Likes: 2
From: Houston TEXAS
Yes. There is no 3-4 wot shift but if you have a tune you can program one. Just keep in mind if you hit 4th at wot you aren't doing that trans any favors. It is an overdrive gear with a band only and was not intended as a load bearing gear. High probability of failure under load.
Race Director
Joined: Apr 2007
Posts: 11,150
Likes: 889
From: South Western Ontario
Safety Car
Joined: Apr 2007
Posts: 3,582
Likes: 136
From: SoCal CA
Safety Car
Joined: Apr 2007
Posts: 3,582
Likes: 136
From: SoCal CA
Yes. There is no 3-4 wot shift but if you have a tune you can program one. Just keep in mind if you hit 4th at wot you aren't doing that trans any favors. It is an overdrive gear with a band only and was not intended as a load bearing gear. High probability of failure under load.
Yup, a couple of 150mph+ blast weakened my 4th gear until I lost it. I was driving on the freeway when I noticed it was all third gear, no 4th. I knew then it was time for a rebuild before it starts to weaken all the gears. Its a domino effect, you'll lose each one, one after another.
Dont do any shift kits either, that will speed up killing the trans even if you use a bigger servo for fourth. At about 135-140mph the car goes into 4th and a stock trans will actually suffer because of fluid pressure loss and if youre 400rwhp or more, youre just asking for trouble. That 4th gear cant hold that power at those rpms for too long.
Safety Car
Joined: Apr 2007
Posts: 3,582
Likes: 136
From: SoCal CA
Well the Yank TC goes for $725-950 new, depending which one you get, and you can find 3.42's off a Z06 for about $500. After that figure around $600-1000 for install, every shop is different. You can always look for good used parts too.
Le Mans Master
Joined: Apr 2005
Posts: 8,077
Likes: 4
From: Scarborough ONTARIO
he is referring to main shaft or tranny output shaft which connects both tranny and differencial, u can upgrade to C6 Z06 output shaft which is 30 spline and ours are 27 spline, at the same time upgrade driver side C6 shaft as well which is only 60 bucks Vs 300 for heavy duty hardened shaft.
Race Director
Joined: May 2005
Posts: 15,960
Likes: 21
From: West Norriton PA
St. Jude Donor '08
I ended up going with a DriveShaft Company inner tube and having EastCoast Performance (Mike) bore my two end pieces out to hold 12mm bushings. I did a stock rubber one up front and a billet one in the rear.
Also did RPM Flex-Plate / Spline combo, Quicktime BellHousing and a few other extra's.
Melting Slicks
Joined: Jul 2007
Posts: 2,939
Likes: 7
From: Simpsonville SC
St. Jude Donor '09-'10
The torque tube couplers are not that strong. Mine were all twisted up and cracked.
I ended up going with a DriveShaft Company inner tube and having EastCoast Performance (Mike) bore my two end pieces out to hold 12mm bushings. I did a stock rubber one up front and a billet one in the rear.
Also did RPM Flex-Plate / Spline combo, Quicktime BellHousing and a few other extra's.
I ended up going with a DriveShaft Company inner tube and having EastCoast Performance (Mike) bore my two end pieces out to hold 12mm bushings. I did a stock rubber one up front and a billet one in the rear.
Also did RPM Flex-Plate / Spline combo, Quicktime BellHousing and a few other extra's.
Wow!!!
I had Mike Yeager order my a larger propeller shaft as well, and bored out my two end pieces to 12MM! He also installed a new stock rubber coupling up front and the billet one in the rear! Mike even did the RPM Flex plate / Spline combo and the Quicktime Bellhousing!
I also had my 4L60E swapped out for a new RPM Level 6+ 4L65E, and a new RPM Level 3 3.42 diff, and a Vigalante 3-disc 2600 stall converter!
All this was done at Corvettes and Classics by Joey Cartee. Mike was the specifier and purchaser.
Race Director
Joined: May 2005
Posts: 15,960
Likes: 21
From: West Norriton PA
St. Jude Donor '08
Wow!!!
I had Mike Yeager order my a larger propeller shaft as well, and bored out my two end pieces to 12MM! He also installed a new stock rubber coupling up front and the billet one in the rear! Mike even did the RPM Flex plate / Spline combo and the Quicktime Bellhousing!
I also had my 4L60E swapped out for a new RPM Level 6+ 4L65E, and a new RPM Level 3 3.42 diff, and a Vigalante 3-disc 2600 stall converter!
All this was done at Corvettes and Classics by Joey Cartee. Mike was the specifier and purchaser.
I had Mike Yeager order my a larger propeller shaft as well, and bored out my two end pieces to 12MM! He also installed a new stock rubber coupling up front and the billet one in the rear! Mike even did the RPM Flex plate / Spline combo and the Quicktime Bellhousing!
I also had my 4L60E swapped out for a new RPM Level 6+ 4L65E, and a new RPM Level 3 3.42 diff, and a Vigalante 3-disc 2600 stall converter!
All this was done at Corvettes and Classics by Joey Cartee. Mike was the specifier and purchaser.
