Author Topic: Reverse lockout linkage (Backdrive linkage)  (Read 2656 times)

tigs69

  • Newbie
  • *
  • Posts: 3
    • View Profile
Reverse lockout linkage (Backdrive linkage)
« on: November 01, 2009, 11:59:19 PM »
Could someone please explain what the Reverse lockout linkage (Backdrive linkage) does. I have a 69 RS with a saginaw 4speed, 327ci  we are putting back together after 16 years in the garage and can't find the lower rod. The steering colume locks fine. Is it some kind of safety feature or  ??? Thanks for any info.
If you want it done right, do it yourself or open your wallet

william

  • CRG Member
  • *****
  • Posts: 1320
    • View Profile
Re: Reverse lockout linkage (Backdrive linkage)
« Reply #1 on: November 02, 2009, 01:00:06 AM »
It was a federal mandate to help discourage auto theft. The car had to be Park [auto] or reverse [manual] in order to remove the key from the ignition.

The parts were fairly specific-Muncie stuff will not work on a Saginaw. In fact a Muncie SB used a different lower lock rod than a BB.

If you can't find the correct lower rod [3955767, same as used on a standard 3-speed floor shift] it should be fairly easy to fab one out of mild steel rod.

tigs69

  • Newbie
  • *
  • Posts: 3
    • View Profile
Re: Reverse lockout linkage (Backdrive linkage)
« Reply #2 on: November 02, 2009, 01:17:01 AM »
Thanks for the response William. But I quit don't understand, I do not have that lower rod installed and my key comes out fine in any gear so I am way confused!  ???
If you want it done right, do it yourself or open your wallet

william

  • CRG Member
  • *****
  • Posts: 1320
    • View Profile
Re: Reverse lockout linkage (Backdrive linkage)
« Reply #3 on: November 02, 2009, 01:37:02 AM »
The lower collar on the column is rotated to the lock position. Rotate it clockwise with the key in the run position. Ignition switch will not go to the lock position and the key will not come out.

The lock out linkage usually got in the way of headers and was trashed. The collar was left in the lock position and the bulbs were taken out of the reverse lamps.

tigs69

  • Newbie
  • *
  • Posts: 3
    • View Profile
Re: Reverse lockout linkage (Backdrive linkage)
« Reply #4 on: November 02, 2009, 01:44:38 AM »
Thank you William, I understand now  :). Happy motoring.
If you want it done right, do it yourself or open your wallet

ko-lek-tor

  • Hero Member
  • *****
  • Posts: 838
  • someday I'll get one finished
    • View Profile
Re: Reverse lockout linkage (Backdrive linkage)
« Reply #5 on: March 20, 2014, 03:44:14 AM »
Reviving an old thread as I found some real good information that I know it is in the AIM, but this is a bit more concise and shows some good information, so I thought I should share:        Hope this helps. Sorry, this is borrowed from another site and not intending to not give credit to original researcher, Ian Johnson. http://www.worldwidecamaroclub.com/pdf/tech/reverselockouts.pdf
Putting you First...Keeps me First. Talent on loan from God. Helping the hobbyist and exposing the fraud
1969 SS/RS 396 coupe Hugger Orange X22 712 bought in 79
1969 SS 350 coupe LeMans Blue 713 bought in 79
1969 307 4spd. coupe Daytona Yellow 711 bought in 85

69Z28

  • Hero Member
  • *****
  • Posts: 889
  • 69 X33D80 Z28
    • View Profile
Re: Reverse lockout linkage (Backdrive linkage)
« Reply #6 on: March 20, 2014, 04:06:50 AM »
Man, reading this just reminded me of all the times the base MP's used to stop me for white lights to the rear when I had my first Z.
GaryC

'UNRESTORED' 1969 Cortez Silver X33D80 Z28

z28z11

  • Hero Member
  • *****
  • Posts: 773
    • View Profile
Re: Reverse lockout linkage (Backdrive linkage)
« Reply #7 on: March 21, 2014, 02:42:29 AM »
Mine did the same thing. Local cops used to hassle me about it, so I looped a piece of wire over the column to hold the lever in the right position. Thought it looked cool anyway -
1968 Z28 M21/U17 BRG/W
1969 Z28 X77/M20/VE3 LeMans/W
1969 L78 X66/N66 Cortez/BVT
1969 Z11 L48/M35/C60/C06

69Z28

  • Hero Member
  • *****
  • Posts: 889
  • 69 X33D80 Z28
    • View Profile
Re: Reverse lockout linkage (Backdrive linkage)
« Reply #8 on: March 21, 2014, 02:59:35 AM »
After the 3rd or 4th time getting stopped I installed a toggle switch under the dash and when the tailgaters were loose at night I would just flip the lights off and on to get them to back off.
GaryC

'UNRESTORED' 1969 Cortez Silver X33D80 Z28

z28z11

  • Hero Member
  • *****
  • Posts: 773
    • View Profile
Re: Reverse lockout linkage (Backdrive linkage)
« Reply #9 on: March 21, 2014, 03:08:21 AM »
After the 3rd or 4th time getting stopped I installed a toggle switch under the dash and when the tailgaters were loose at night I would just flip the lights off and on to get them to back off.

Lot of guys did that - I never got around to doing it myself, but instead opted to find the parts to replace the backdrive linkage. Now if I can only find time to assemble the car around it -
1968 Z28 M21/U17 BRG/W
1969 Z28 X77/M20/VE3 LeMans/W
1969 L78 X66/N66 Cortez/BVT
1969 Z11 L48/M35/C60/C06