Installing a TH400 into a C5

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Mar 17, 2017 | 06:38 PM

#21

Pounder

1/4 mile/AutoX

Joined: Jun 2014

Posts: 11,439

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From: Buffalo Texas

The stock auto can't be built for what you want ??? are not a lot of the internals same as a 400 ??? OH nice job !!!

Last edited by Pounder; Mar 17, 2017 at 06:38 PM.

Mar 17, 2017 | 06:48 PM

#22

Drewstein

Melting Slicks

Joined: Feb 2006

Posts: 3,191

Likes: 43

From: Scottsdale Az

Quote:

Originally Posted by Pounder

The stock auto can't be built for what you want ??? are not a lot of the internals same as a 400 ??? OH nice job !!!

General consensus of the 4L60 is it sucks and isn't worth throwing the money at it if you're serious about racing.

Mar 18, 2017 | 09:42 AM

#23

killian96ss

Burning Brakes

Joined: Feb 2013

Posts: 904

Likes: 295

From: Sacramento, California

Quote:

Originally Posted by Drewstein

General consensus of the 4L60 is it sucks and isn't worth throwing the money at it if you're serious about racing.

The 4L80E is an option if you want OD and a trans just as strong as a TH400, but probably not needed for a track only car. If your experimenting with gear ratios using a TH400 you can try a 2.75 1st gear in place of the stock 2.48. Not sure if that would help or hurt if your using 4.10 rear gears?

Steve

Mar 18, 2017 | 03:05 PM

#24

C5 Pete

Thread Starter

AMP Racing

Joined: Aug 2006

Posts: 10,753

Likes: 587

From: Washington TWP NJ

2023 C5 of the Year Finalist - Modified

2017 C5 of Year Finalist

St. Jude Donor '09-'10-'11-'12

SLR would be a bit much with a 2.75 first and 4.10s. I wasn't too happy with it using the stock 2.48 and 4.10s, That's why I went with a 3.73 rear gear.

Of course, every combo is different and you need to find what works for you.

I'm pretty happy with how my car works right now.

Oct 7, 2017 | 12:43 AM

#25

luvTTwins

Racer

Joined: Jun 2011

Posts: 405

Likes: 5

Do you still have the files from the adapter plates you had made?

Oct 7, 2017 | 03:13 AM

#26

Brackets

Instructor

Joined: Oct 2010

Posts: 247

Likes: 44

From: Vancouver Island British Columbia, Canada

Great thread. Thanks for posting.

Oct 7, 2017 | 09:28 AM

#27

C5 Pete

Thread Starter

AMP Racing

Joined: Aug 2006

Posts: 10,753

Likes: 587

From: Washington TWP NJ

2023 C5 of the Year Finalist - Modified

2017 C5 of Year Finalist

St. Jude Donor '09-'10-'11-'12

I don't have the files.

There's a machine shop in central Jersey that has them because they made the plates.

Feel free to pm me if your want their contact info.

Oct 8, 2017 | 06:18 PM

#28

zeevette

Race Director

Joined: Sep 2005

Posts: 11,060

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From: Pasco WA

Just read this thread, as I am contemplating a swap to an A/T in my supercharged Z. However, I don't race, and I would want a newer 6 or 8 (prefer the 8 speed) AT. This is for health reasons, as I want to keep my '02, but at this point, a modern AT with multiple ODs would be my preference. Do you know it this' possible?