Transmission Upgrade: 4L60E / 4L65E

Reply Subscribe

Thread Tools

Search this Thread

Jul 4, 2005 | 09:46 AM

89'Bowtie

Thread Starter

Burning Brakes

Joined: Apr 2001

Posts: 1,209

Likes: 0

From: Toronto Ontario

St. Jude Donor '13

Transmission Upgrade: 4L60E / 4L65E

Looking for details on upgrading the 4L60E with some heavy duty parts, adding a extra clutch plate, stronger planetary (5 gear)..etc.

What are people doing with the 4L60's on rebuild to handle a little extra power? Keeping the same gear ratios?

Also, have anyone played around with a 4L65 in a Y-Body?

Thanks,
Vic

Jul 4, 2005 | 10:10 AM

Corvette Kid

Large Impressive Member

Joined: Jul 2003

Posts: 65,811

Likes: 71

From: Good health is merely the slowest possible rate at which one can die

St. Jude Donor '04-'05-'06-'07

Interesting. I've heard of the 4L80E upgrade but also that it is a bit of a project to install in a Vette. I hadn't even heard of the 4L65E. I like the idea of the extra clutch plate.

Jul 4, 2005 | 01:28 PM

Pete K

Race Director

Joined: Feb 2004

Posts: 12,517

Likes: 19

All of the parts that make a 4l60 into a 4l65 are available new, used and aftermarket. In my opinion it is easier to add these to your trans than to deal with the issues sometimes involved with swapping in a non vette trans. I have the gm upgrade book and can list the specific parts, part numbers and other points of interest. If you need them I will post them.

Jul 4, 2005 | 02:45 PM

89'Bowtie

Thread Starter

Burning Brakes

Joined: Apr 2001

Posts: 1,209

Likes: 0

From: Toronto Ontario

St. Jude Donor '13

Upgrades

Hi Pete,
If you could post those numbers, that would be great. or Email me if that is easier.

I appreciate it. Where did you get the GM upgrade book? Is it a GM part number?

Thanks,
Victor

Jul 4, 2005 | 02:51 PM

Pete K

Race Director

Joined: Feb 2004

Posts: 12,517

Likes: 19

The book is written by atsg. It contains reprints from GM. It lists all of the major and minor changes done to the trans by Gm. It also lists part numbers, pics and retro fit specifics. Most of these parts are available in the aftermarket. This book makes no mention of aftermarket though. My friend borrowed it. I will try to grab it tomorrow. Very useful info in it. ATSG referrs to it as the "green" book. The regular repair manuals are blue. It covers 82-2001

Jul 4, 2005 | 03:44 PM

pwrful c4

Burning Brakes

Joined: Jun 2002

Posts: 1,159

Likes: 0

From: royal palm beach florida

Quote:

Originally Posted by Pete K

Thanks for the great info.

Jul 4, 2005 | 04:03 PM

89'Bowtie

Thread Starter

Burning Brakes

Joined: Apr 2001

Posts: 1,209

Likes: 0

From: Toronto Ontario

St. Jude Donor '13

Thanks Pete,

That would great!

Victor

Jul 5, 2005 | 02:41 AM

Dan Parker '96

Drifting

Joined: Jun 2001

Posts: 1,997

Likes: 1

From: Lake Ozark MO

With upgraded planetarys (5 gear .vs 4) and clutches, my only tranny failures have been due to a poorly built Edge Racing converter (destroyed lockup clutch...should be non-typical) and later I ripped out the hub of the front end of that same Edge converter (non-typical).

Since I've gone wholly (complete converter) with my local tranny shop (M&M Transmission in Wardsville, MO) I haven't had a problem in the past couple of years.

My setup is totally weak at 310RWHP N/A and 422RWHP on nitrous.

If you don't get a bum Edge converter then you'll be in good shape with upgrades from your local shop.