Brand new ZF trans - ZR-1 Net Registry Forums

2ljd · 11-15-2017

https://honolulu.craigslist.org/big/...386997277.html

In case anyone is interested...

jmglyder · 11-15-2017

Hello,

According to the link:

Fitment Details: This transmission is a direct replacement for 1989-1996 Corvettes (excluding ZR-1).

I don't know enough about these to say one way or another but the seller says the ZR-1 is excluded.

2ljd · 11-15-2017

I'm definitely no expert on these, but I thought there were a few mods that could be done and the trans would work in a Z?

jmglyder · 11-15-2017

I would hope that would be the case and if so someone will have a brand new trans

QB93Z · 11-15-2017

There are two issues to understand about the ZF transmission in C4's.

1. The Non-ZR-1 transmission has a shorter input shaft and housing. The input shaft and housing from a donor ZR-1 version can be installed to make the transmission fit in a ZR-1.

2. The later model ZF transmissions have a small diameter input shaft housing and the Throw-out Bearing has internal nylon strips that slide on the input housing. To use the later model transmission on a early model ZR-1, the correct throw-out bearing must be installed. I think that the change occurred in 1994 but you should verify the fit of the throw out bearing on the housing before installing the clutch. I learned this the hard way during a clutch swap job when the transmission could not be installed.

Jim

Dynomite · 11-15-2017

Quote:

Originally Posted by QB93Z

There are two issues to understand about the ZF transmission in C4's.

1. The Non-ZR-1 transmission has a shorter input shaft and housing. The input shaft and housing from a donor ZR-1 version can be installed to make the transmission fit in a ZR-1.

2. The later model ZF transmissions have a small diameter input shaft housing and the Throw-out Bearing has internal nylon strips that slide on the input housing. To use the later model transmission on a early model ZR-1, the correct throw-out bearing must be installed. I think that the change occurred in 1994 but you should verify the fit of the throw out bearing on the housing before installing the clutch. I learned this the hard way during a clutch swap job when the transmission could not be installed.

Jim

A few more details of the use of a Black Label Transmission in a Later Model ZR-1 (1995 for example)

Blue Label Removed (TOP), Rebuilt (ZFdoc) Black Label Installed (BOTTOM).

Rebuilt Black Label Transmission Installed

Ccmano · 11-15-2017

It’s a last version Blue label 1052 000 089 for LT1/LT4.

Here’s another new one closer to home but also an LT1/LT4 version.
https://sfbay.craigslist.org/nby/pts...347609352.html

For the money, to buy one and convert the input shaft, I might as well just send mine to Bill B and have him rebuild it.
H

2ljd · 11-15-2017

Cool, thanks Jim!

Sent from my iPhone using ZR-1 Net Registry

11-15-2017	#1
2ljd Join Date: May 2016 Location: Hawaii Posts: 124	Brand new ZF trans https://honolulu.craigslist.org/big/...386997277.html In case anyone is interested...

11-15-2017	#2
jmglyder Join Date: Dec 2014 Location: north carolina Posts: 168	Re: Brand new ZF trans Hello, According to the link: Fitment Details: This transmission is a direct replacement for 1989-1996 Corvettes (excluding ZR-1). I don't know enough about these to say one way or another but the seller says the ZR-1 is excluded. __________________ John Glyder ZR-1 Net Registry Membership Chair

11-15-2017	#3
2ljd Join Date: May 2016 Location: Hawaii Posts: 124	Re: Brand new ZF trans I'm definitely no expert on these, but I thought there were a few mods that could be done and the trans would work in a Z?

11-15-2017	#4
jmglyder Join Date: Dec 2014 Location: north carolina Posts: 168	Re: Brand new ZF trans I would hope that would be the case and if so someone will have a brand new trans __________________ John Glyder ZR-1 Net Registry Membership Chair

11-15-2017	#5
QB93Z Join Date: May 2007 Location: Westminster, Maryland Posts: 3,689	Re: Brand new ZF trans There are two issues to understand about the ZF transmission in C4's. 1. The Non-ZR-1 transmission has a shorter input shaft and housing. The input shaft and housing from a donor ZR-1 version can be installed to make the transmission fit in a ZR-1. 2. The later model ZF transmissions have a small diameter input shaft housing and the Throw-out Bearing has internal nylon strips that slide on the input housing. To use the later model transmission on a early model ZR-1, the correct throw-out bearing must be installed. I think that the change occurred in 1994 but you should verify the fit of the throw out bearing on the housing before installing the clutch. I learned this the hard way during a clutch swap job when the transmission could not be installed. Jim __________________ If it isn't fun, you aren't doing it right! 1990 Black ZR-1 - sold 1993 Quasar Blue ZR-1 1994 Competition Yellow ZR-1 1995 Dark Purple ZR-1 Maryland State Coordinator WAZOO Member Last edited by QB93Z; 11-15-2017 at 07:15 PM.

11-15-2017	#7
Ccmano Join Date: Jun 2006 Location: Sparks, NV Posts: 2,852	Re: Brand new ZF trans It’s a last version Blue label 1052 000 089 for LT1/LT4. Here’s another new one closer to home but also an LT1/LT4 version. https://sfbay.craigslist.org/nby/pts...347609352.html For the money, to buy one and convert the input shaft, I might as well just send mine to Bill B and have him rebuild it. H __________________ 90'ZR-1 #1461 Red/Black Ported Intake, Degreed Cams, OBX Headers & Exhaust, Fidanza FW, Secondary Delete, Custom tune, C6 GS Wheels. Sold 08 C6 Z51 Crystal Red Metallic Sold Vararam Intake, Tune, Sold 05 C6 Z51 Red/Black Sold 90'ZR-1 #1723 Black/Gray Sold but not forgotten 91' Z51 L98 White Vert. My First, you always remember your first. Sold.

11-15-2017	#8
2ljd Join Date: May 2016 Location: Hawaii Posts: 124	Re: Brand new ZF trans Cool, thanks Jim! Sent from my iPhone using ZR-1 Net Registry

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