Transmission or Differential

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Mar 17, 2007 | 01:00 PM

TheBigDog

Thread Starter

Burning Brakes

Joined: Nov 2002

Posts: 1,164

Likes: 184

From: Ohio

Transmission or Differential

In the near future My Vette is going under the knife for a TTiX kit install. Which will be the first to go at 500+ HP

? I hear the diff and others say the tranny. It will be street drived only wiith Z06 size street tires only.

Thanks,
The Big Dog

Mar 17, 2007 | 01:38 PM

4DRUSH

Le Mans Master

Joined: Feb 2004

Posts: 8,629

Likes: 16

From: York PA

auto trans will go first

Mar 17, 2007 | 02:02 PM

mdhmi

Team Owner

Joined: Jul 2003

Posts: 20,474

Likes: 2

From: Detroit

Is yours an A4 or M6?

For an A4 (auto) setup the trans will go first without a doubt.

I'd go with an RPM transmission, a built convertor, and a trans cooler.

Mar 17, 2007 | 02:40 PM

Sponge Vette

Melting Slicks

Joined: Nov 2003

Posts: 2,887

Likes: 2

From: Macomb MI

St. Jude Contributor

Seriously considering the Novi Supercharger, what would I have to do to get at least one season out of my stock A4, thanks for the reply the other day Mark

Mar 17, 2007 | 03:03 PM

mdhmi

Team Owner

Joined: Jul 2003

Posts: 20,474

Likes: 2

From: Detroit

A small convertor (limits heat) and a trick transmission cooler will help, but a stock 4L60 was not designed to support 500+ rwhp.

Pay me now or pay me later as the saying goes - and it's more expensive when you pay labor. Float the extra $2K and enjoy the peace of mind.

Mar 17, 2007 | 03:24 PM

jkz06

Pro

Joined: Nov 2003

Posts: 667

Likes: 0

From: Austin TX

What's the answer for 6 speeds? If you only had money to do diff or tranny which would be first?

Mar 17, 2007 | 03:37 PM

mdhmi

Team Owner

Joined: Jul 2003

Posts: 20,474

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From: Detroit

Quote:

Originally Posted by jkz06

What's the answer for 6 speeds? If you only had money to do diff or tranny which would be first?

In the case of a six speed the stock trans and differential are fine. The clutch is the first thing to go and if you're going to put a sticky tire on I'd definitely install a DTE differential strut brace (~$400).

The purpose of the strut brace is to protect the transmission when you grenade the differential.

Also a hardened output shaft is never a bad idea. ~$250.

Mar 17, 2007 | 06:11 PM

0Rob@ChampionMotors

Former Vendor

Joined: Nov 2002

Posts: 4,003

Likes: 12

From: Toronto Ontario

If 6 speed stock tranny and stock diff are fine with stock tires. Just watch out for wheel hop. Also a good clutch is recommened.

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Mar 17, 2007 | 06:23 PM

jkz06

Pro

Joined: Nov 2003

Posts: 667

Likes: 0

From: Austin TX

Thanks guys, helpful as always.

Mar 18, 2007 | 02:17 AM

#10

LV Vette

Melting Slicks

Joined: May 2005

Posts: 3,461

Likes: 161

From: Las Vegas Nevada

St. Jude Donor '08

Quote:

Originally Posted by Boost Master

If 6 speed stock tranny and stock diff are fine with stock tires. Just watch out for wheel hop. Also a good clutch is recommened.

I’ll double or even triple that. With an almost stock motor and sticky tires, I blew two differentials in one year. Since then, I had DTE build a super differential that would be pretty hard to break, unless I have wheel hop. Wheel hop has broken more differentials then any other single reason.

IMHO,

Clayton from Las Vegas