Rubberbandit's 4L80E Build Thread. - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Custom 68 · 10-01-2016, 08:12 AM

So much for buying and chucking parts at this let's turn them on our lathe. Very impressive nice job.

clinebarger · 10-01-2016, 08:54 PM

Build up of the Reaction & Output carriers, Everything was in perfect shape.
Replaced all the bushings with Clevite pieces & a new Low-Reverse Roller Clutch, The only mod too this area is a TH400 Silencer Ring which GM did away with in 1995 for cost cutting reasons, This is not only for noise reduction......It also acts as a Rear Support Thrust Washer for the Reaction Carrier.

First was the Bushing in the Output Shaft, This is one of those out of sight bushings that normally NEVER gets replaced though it see's a ton of load, Has a Lube Groove the original Federal Mogul Bushing didn't have.

Reaction Carrier Bushing....

Sun Gear Shaft Bushings(2)....

TH400 Silencer Ring....

New Center Support Bushing....

Geartrain assembly ready too install....

clinebarger · 10-01-2016, 09:26 PM

1997 & up 4L80E's have a smaller/weaker Overdrive Roller Clutch, Why GM did this is a mystery. I buy ALL the early 4L80E cores I can....Even European versions & harvest the OD Carrier, Roller Clutch, & Overrun Housing out of them.
This particular piece is from a 1996 4L80E from behind a 6.0L V12 Jaguar that had under 40,000 miles. All I did was replace the Bushing & the Overrun Frictions.

This pic highlights the difference between the OD Roller Clutch that was in this unit (Left) & the larger/more robust Roller Clutch found in the Jaguar OD assembly on the right.

Overrun Clutch Housing with the Overrun Frictions & OD Roller Clutch installed...

OD Carrier, Also houses the Roller Clutch outer Race & Overrun Clutch Hub.

OD assembly & Input Shaft (With new Sealing Rings) ready for install.

10-01-2016, 08:12 AM	#1
Custom 68 Registered User Join Date: Nov 2001 Location: Springfield, MO Posts: 2,946	Re: Rubberbandit's 4L80E Build Thread. So much for buying and chucking parts at this let's turn them on our lathe. Very impressive nice job. __________________ Dave 1968 Custom Chevy with turbo charged 5.3 gen III 4l80e swap 1967-71 GMC 3/4 ton long step 4x4 (not sure what year exactly?) "A good friend will bail you out of jail...but a true friend will be sitting next to you saying "that was frekin awesome". "If it doesn't fit force it...If it breaks then it needed to be replaced anyway!"

10-01-2016, 08:54 PM	#2
clinebarger Senior Member Join Date: May 2009 Location: Fort Worth, TX Posts: 6,370	Re: Rubberbandit's 4L80E Build Thread. Build up of the Reaction & Output carriers, Everything was in perfect shape. Replaced all the bushings with Clevite pieces & a new Low-Reverse Roller Clutch, The only mod too this area is a TH400 Silencer Ring which GM did away with in 1995 for cost cutting reasons, This is not only for noise reduction......It also acts as a Rear Support Thrust Washer for the Reaction Carrier. First was the Bushing in the Output Shaft, This is one of those out of sight bushings that normally NEVER gets replaced though it see's a ton of load, Has a Lube Groove the original Federal Mogul Bushing didn't have. Reaction Carrier Bushing.... Sun Gear Shaft Bushings(2).... TH400 Silencer Ring.... New Center Support Bushing.... Geartrain assembly ready too install....

10-01-2016, 09:26 PM	#3
clinebarger Senior Member Join Date: May 2009 Location: Fort Worth, TX Posts: 6,370	Re: Rubberbandit's 4L80E Build Thread. 1997 & up 4L80E's have a smaller/weaker Overdrive Roller Clutch, Why GM did this is a mystery. I buy ALL the early 4L80E cores I can....Even European versions & harvest the OD Carrier, Roller Clutch, & Overrun Housing out of them. This particular piece is from a 1996 4L80E from behind a 6.0L V12 Jaguar that had under 40,000 miles. All I did was replace the Bushing & the Overrun Frictions. This pic highlights the difference between the OD Roller Clutch that was in this unit (Left) & the larger/more robust Roller Clutch found in the Jaguar OD assembly on the right. Overrun Clutch Housing with the Overrun Frictions & OD Roller Clutch installed... OD Carrier, Also houses the Roller Clutch outer Race & Overrun Clutch Hub. OD assembly & Input Shaft (With new Sealing Rings) ready for install.



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