Muncie 4spd adjustment help
Thread Starter
Pro
Joined: May 2006
Posts: 576
Likes: 0
From: Kernersville North Carolina
Muncie 4spd adjustment help
OK, I finally took the car for the maiden voyage yesterday! I'm sooo excited! It's going to be a nuclear power plant!
1 thing I need to do is adjust the shifter linkages. I cannot get it into R or 2. 1, 3, and 4 all engage and work.
What is the best procedure for aligning the shifter linkages?
Thanks!
1 thing I need to do is adjust the shifter linkages. I cannot get it into R or 2. 1, 3, and 4 all engage and work.
What is the best procedure for aligning the shifter linkages?
Thanks!
Burning Brakes
Joined: Feb 2001
Posts: 929
Likes: 5
From: Marietta GA
This procedure is pretty well documented. You may want to check the archives. There is a "gauge" you can make (the dimensions are in repair manuals) or buy. You put the shifter in neutral, loosen the linkage adjusting nuts, insert the metal gauge into the slot at the bottom of the shifter from underneath the car, then tighten up the linkage adjusting nuts. Remove gauge and you are done.
Melting Slicks
Joined: Aug 2002
Posts: 3,334
Likes: 4
From: Midland TX
Originally Posted by BB68Vett
This procedure is pretty well documented. You may want to check the archives. There is a "gauge" you can make (the dimensions are in repair manuals) or buy. You put the shifter in neutral, loosen the linkage adjusting nuts, insert the metal gauge into the slot at the bottom of the shifter from underneath the car, then tighten up the linkage adjusting nuts. Remove gauge and you are done.
Sounds easy BUT IT'S NOT!!!!!It is very difficult to get that gauge in the slot on the shifter. You will need to raise you Vette and be able to crawl under it at least on the drivers side. You will need to adjust the levers on the linkages to get them right. Start by putting it in neutral and checking to see if the shifter easily moves side to side and into reverse. If you feel it "hanging up" or hitting when you move it side to side you will need to adjust that linkage. 1-2 linkage is the back lever (not the reverse in the very back). 3-4 is the front lever.
If you have the correct linkages, the 3-4 lever has 2 nuts to adjust the lever/linkage. The 1-2 lever will have to be unbolted from the transmission and turned on the threaded end of the linkage.
I used the gauge at first but have had to fine tune my linkages to get them to work correctly. I just make small changes to a lever to make sure the shifter still works correctly.
Good luck.
Burning Brakes
Joined: Feb 2001
Posts: 929
Likes: 5
From: Marietta GA
72 Vette_454 is correct, it is not easy. I struggled for almost an hour to get the gauge in the slot. It helps to remove the left side intermediate exhaust pipe.
Last edited by BB68Vett; Nov 13, 2006 at 04:26 PM.
Team Owner
Joined: Jul 1999
Posts: 26,545
Likes: 46
From: Huntersville NC
Originally Posted by BB68Vett
72 Vette_454 is correct, it is not easy. I struggled for almost an hour to get the gauge in the slot. It helps to remove the left side intermediate exhaust pipe.
I wonder if it varies by model year. I will anticipate your next question, by saying I have reached it with approximately equal great difficulty from the top and from the bottom. From the top, removed the trans boots and busted my knuckles and reached down from the left side with just the small tool. From the bottom I attached the little tool to a long handled grabber thingy and managed to find the hole from below. Think I prefer from above, but it requires more work to remove the boots first.
Just reread my post above....
imagining sitting her down on the bed and grabbing her boot by the heel, bracing my foot against the bed... pulling on the darn boot, ok, that's a lot of work to remove the boots first. Now I attach the little tool to a long handled grabber thingy.. 
(She looked at me expectantly!!!) oh, never mind!
Last edited by PRNDL; Nov 13, 2006 at 08:34 PM.
