A question about auto shifter adjustment
Thread Starter
Race Director
Joined: Dec 2003
Posts: 14,150
Likes: 936
From: Fremont Ca
2022 C4 of the Year Finalist - Modified
A question about auto shifter adjustment
I took a used shifter and shortened it and now while it works fine it's not adjusted to the console. I believe there is adjustment at the tab on the trans but why would it be out of adjustment,is there that much of a variation that the tab on the trans needed to be slotted for this very reason. The car is a 75,I would think the auto shifters all all pretty much the same from 68-75.
2026 Loser of the Year
Joined: Sep 2013
Posts: 36,599
Likes: 7,046
From: New Or-leens Loo-z-anna
To be clear:
The PRNDL display is not matching the shifter position on the console?
If so, maybe you can adjust the cable length where it bolts to the side of thhe trans.
Wait for expert. members to verify this.
The PRNDL display is not matching the shifter position on the console?
If so, maybe you can adjust the cable length where it bolts to the side of thhe trans.
Wait for expert. members to verify this.
Safety Car
Joined: Aug 2001
Posts: 3,685
Likes: 202
From: Waterford Mi
- The only adjustment is the attachment point on the transmission. It is slated for some small amount of movement. I just went through this when I purchased a new cable because for some reason the new cable is about a 1/4” longer than the original cable.
there is no adjustment to wheee the bracket attaches the the oil pan but if you had to you could slot the holes to get a little more if the bracket isn’t enough
Safety Car
Joined: Aug 2001
Posts: 3,685
Likes: 202
From: Waterford Mi
Start by disconnecting the cable to the transmission and place the shifter in park. Then see where the hole in the cable lines up to the transmission. Then do the same for the Drive position (3rd).
Safety Car
Joined: Aug 2001
Posts: 3,685
Likes: 202
From: Waterford Mi
The shifter has no adjustment to the position the the PRN321.
if this is not lining up correctly then the detent plate is different for some reason
The detent plates are spot welded in place unless someone took it off.
look closely at the detent plate and see if maybe someone filed the detent a to get it to work with an OD transmission-PRND321
if this is not lining up correctly then the detent plate is different for some reason
The detent plates are spot welded in place unless someone took it off.
look closely at the detent plate and see if maybe someone filed the detent a to get it to work with an OD transmission-PRND321
Last edited by redwingvette; Jun 3, 2023 at 04:41 PM.
Thread Starter
Race Director
Joined: Dec 2003
Posts: 14,150
Likes: 936
From: Fremont Ca
2022 C4 of the Year Finalist - Modified
The shifter has no adjustment to the position the the PRN321.
if this is not lining up correctly then the detent plate is different for some reason
The detent plates are spot welded in place unless someone took it off.
look closely at the detent plate and see if maybe someone filed the detent a to get it to work with an OD transmission-PRND321
if this is not lining up correctly then the detent plate is different for some reason
The detent plates are spot welded in place unless someone took it off.
look closely at the detent plate and see if maybe someone filed the detent a to get it to work with an OD transmission-PRND321
Le Mans Master
Joined: Jan 2001
Posts: 6,743
Likes: 1,385
There is a DETENT PLATE at the shifter. See here where I modified mine for a 4 speed automatic so as to allow selecting First Gear:
https://www.corvetteforum.com/forums...post1604916531
https://www.corvetteforum.com/forums...post1604916531
Thread Starter
Race Director
Joined: Dec 2003
Posts: 14,150
Likes: 936
From: Fremont Ca
2022 C4 of the Year Finalist - Modified
There is a DETENT PLATE at the shifter. See here where I modified mine for a 4 speed automatic so as to allow selecting First Gear:
https://www.corvetteforum.com/forums...post1604916531
https://www.corvetteforum.com/forums...post1604916531
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Race Director
Joined: Apr 2011
Posts: 11,183
Likes: 3,335
From: North of Toronto - Ontario
The adjustment is only on the transmission lever. The shifter was to be put into park (with a spacer holding it "not all the way against the stop" and then the with the transmission in park the bolt/pin that the cable attaches to is tightened in whatever place it was at.
The spacer was to make sure the transmission was in park and not just the shifter bottomed out before it was actually in park
M
The spacer was to make sure the transmission was in park and not just the shifter bottomed out before it was actually in park
M
Race Director
Joined: Apr 2011
Posts: 11,183
Likes: 3,335
From: North of Toronto - Ontario