Final word on speedo correction???
Thread Starter
Le Mans Master
Joined: Jul 2005
Posts: 5,193
Likes: 16
Final word on speedo correction???
Going to swap out my 2.59 rear for a 3.07..1992 auto..so:
I've read everything here about correcting the speedometer and it gets a bit confusing.
What exactly will I need?
I've read everything here about correcting the speedometer and it gets a bit confusing.
What exactly will I need?
Le Mans Master
Joined: Oct 2008
Posts: 9,758
Likes: 49
From: Houston Texas
A green gear.. that was all it took to do my 91. I still have the gear if you need it. I rotated my VSS IIRC 180 degrees. 92 still have the 700R?
Le Mans Master
Joined: Oct 2008
Posts: 9,758
Likes: 49
From: Houston Texas
Race Director
Joined: Apr 2002
Posts: 10,036
Likes: 346
From: Anaheim CA
There are two VSS units. One has the shaft that the gear mounts on offset to take a bigger gear with more teeth. If your shaft is centered then you don't need to rotate the VSS. I'm pretty sure the 2.59/3.07 VSS has the shaft centered.
The clamp that holds the VSS in the trans fits in ridges in the VSS and it is meant to go in only one way. I knew I had a picture, but I guess I didn't upload it before, but here it is (3.07 with green gear -- red gear on output shaft):
The clamp that holds the VSS in the trans fits in ridges in the VSS and it is meant to go in only one way. I knew I had a picture, but I guess I didn't upload it before, but here it is (3.07 with green gear -- red gear on output shaft):
Le Mans Master
Joined: Aug 2000
Posts: 8,838
Likes: 31
From: Australia
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Safety Car
Joined: Jun 2006
Posts: 3,629
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From: FL
Changing the drive gear on the transmission tailshaft is only necessary for rear axle ratios lower than 3.07 such as 3.45,3.56, 3.73.
Thread Starter
Le Mans Master
Joined: Jul 2005
Posts: 5,193
Likes: 16
There are two VSS units. One has the shaft that the gear mounts on offset to take a bigger gear with more teeth. If your shaft is centered then you don't need to rotate the VSS. I'm pretty sure the 2.59/3.07 VSS has the shaft centered.
The clamp that holds the VSS in the trans fits in ridges in the VSS and it is meant to go in only one way. I knew I had a picture, but I guess I didn't upload it before, but here it is (3.07 with green gear -- red gear on output shaft):
The clamp that holds the VSS in the trans fits in ridges in the VSS and it is meant to go in only one way. I knew I had a picture, but I guess I didn't upload it before, but here it is (3.07 with green gear -- red gear on output shaft):