Classic Mustang shifters are the proverbial broomstick in a barrel-sloppy, ineffective, and forget speed shifting unless you like missing gears. Think of a classic Mustang shifter as an engineering mishap where the bean counters won out over engineers to keep per unit costs down. But is it really as bad as all that?
Yes. Classic Mustang three-speed and four-speed shifters were designed to function smoothly for five to seven years and roughly 100,000 miles-and most didn't last that long. It isn't that these mechanical wonders will leave you on the roadside. They work even when they're shot to pieces. They just feel terrible in your hand where it's challenging to find a gear. Sometimes, they will jam and leave you stuck in gear. That's when you either crawl underneath to bang them free or call for a wrecker.
The Mustang's three-speed...
The Mustang's three-speed shifter is simple in scope and operation. The shifter handle moves the spring-loaded selector shaft from right to left depending on which side of the H-pattern you're seeking. A tang, or straight shaft, pressed into the selector shaft moves shifter levers and rods fore and aft to engage First and Reverse when the inboard lever is tanged. When the outboard (left) shifter lever is tanged, we have Second and Third gear. The inboard lever moves the First/Reverse rod while the outboard lever moves Second and Third.
The good news with these shifters is that they are easy to repair and adjust. You just have to stay on top of them with regular preventative maintenance. Their greatest enemies are dust, dirt, and crud, which is what makes them malfunction. Mustangs Etc. has everything you need for restoring manual shift performance. Remanufactured three- and four-speed shifters with fresh plating and new parts are also available from Mustangs Etc.
Classic Mustang shifters are spring-loaded, sliding selector shaft mechanisms that get their direction from a bolt-on shifter handle. They get sloppy when the shifter handle cups and buttons wear out and fall out, which is what makes them loose and sloppy. Shifter cups are two 1/2-inch buttons (three-speed) or cups (four-speed) that ride on each side of the shifter housing when you're in each side of the H-pattern. Think of them as shifter handle bushings. They give your shifter handle something to bear against when you're searching for a cog.
It is important to note the shifters we're addressing here are '65-'68 three- and four-speed shifters only. There isn't much difference between three- and four-speed shifters. Aside from the additional Fourth gear and Reverse lockout functions, these guys are virtually the same. For '69, Ford tried to copy the legendary Hurst shifter without much success on both three- and four-speed. In 1970, Ford switched to the Hurst shifter for high-performance Mustangs through '73.
In your search for Ford shifter parts, you will find many variations out there from all Ford carlines. Some interchange. Some do not. The greatest weak spot in these shifters, aside from cups and buttons, is the U-shaped trunnion casting that the shifter handle attaches to. With abuse, these trunnions tend to crack and break. You're going to want to inspect yours for cracks or evidence of any welding. If you find either, toss it.
We're going to walk you through the rebuilding process along with proper adjustment that will make your Mustang driving experience rewarding.
Shifter rods are disconnected...
Shifter rods are disconnected by removing the cotter pins or retaining nuts.
Shifter handle is removed...
Shifter handle is removed via two bolts and a 1/2-inch socket.
Shifter assembly is removed...
Shifter assembly is removed by pulling the three bolts that secure it to the transmission tailshaft housing.
Here are three- and four-speed...
Here are three- and four-speed shifter assemblies side by side so you can see the differences. The three-speed shifter on the left has two shift levers. The four-speed shifter on the right has three. The shifter housing is basically the same. What makes the assembly different is one additional path beyond the basic H-pattern for Reverse gear and the corresponding lever.
Disassembly begins at the...
Disassembly begins at the return spring with the removal of the C-clip and washer to release the spring.
The retainer is removed next...
The retainer is removed next using a 1/2-inch socket to release the shift levers.
The thrust washer is removed...
The thrust washer is removed next, which is what the shift levers bear against.
Shifter levers are next, one...
Shifter levers are next, one at a time. The first outboard shift lever removed operates Third and Fourth gears.
This longer inboard shift...
This longer inboard shift lever operates First and Reverse.
Because this is a complete...
Because this is a complete rebuild where all parts will be cleaned and replated, the trunnion pin, which is a pinch fit, is driven out to release the shifter handle trunnion.
Mustangs Etc. rebuilt shifters...
Mustangs Etc. rebuilt shifters are stripped down, zinc plated like new, and reassembled using new parts where required. If you want to rebuild your own shifter, Mustangs Etc. has everything you need to get the job done.
Three- and four-speed shifter...
Three- and four-speed shifter supports are basically the same except for bolt hole positions. In fact, you can use a four-speed shifter support as a three-speed donor if necessary.
The straight shaft, or tang,...
The straight shaft, or tang, is pressed into the selector shaft. Sometimes the zinc coating makes this challenging, which means you have to dress the surface if the fit is too tight.
Shift levers get a dressing...
Shift levers get a dressing of white lithium grease for good slip-slide performance. Typically, these shifters malfunction due to road grime. Once they are clean and well lubricated, function becomes smooth again.
The shifter is assembled using...
The shifter is assembled using new locking hardware. Although these look like new-old-stock Ford parts, they're restored and replated Ford pieces from Mustangs Etc.
With all moving parts lubricated...
With all moving parts lubricated with white lithium grease, the return spring is installed using a new C-clip and washer.
The shifter trunnion pin is...
The shifter trunnion pin is pressed in at this time. Again, because there's fresh zinc plating and this is an interference fit, sometimes the pin has to be dressed with a file or course sandpaper so it will fit. Shifter trunnions should be inspected for stress cracks that can cause failure during the rebuild process.
Adjustment is easy. Use a...
Adjustment is easy. Use a #2 Phillips screwdriver to lock the shift levers. Then make sure both shift levers on the transmission are in neutral. Adjust the rods as they appear here (centered). Tighten the locknuts and adjustment is complete.
New shift handle grommets...
New shift handle grommets are installed next. They absorb vibration and provide bolts with a snug fit.
Three-speed manual shifters...
Three-speed manual shifters get these aluminum discs, or cups, which ride the shifter support when you're on each side of the H-pattern. Cup pockets are packed with white grease and each cup is installed as shown. Grease provides lubrication and takes up vibration.
The shifter handle is installed...
The shifter handle is installed by first starting the bolt threads, then depressing the cups for a nice fit inside the shifter support. Bolts are run down using a non-permanent thread locker for security. You can use flat washers underneath the bolt heads for even greater security and performance.
Three- and four-speed shifters...
Three- and four-speed shifters are virtually the same with a couple of exceptions. Four-speed shifters have one additional shift lever for Reverse, which is a spot occupied by a thick spacer on the three-speed shifter. Four-speed shifters have a cable-controlled reverse lockout where three-speed shifters do not. What we are unable to show you here are the more uncommon Dagenham four-speed (six-cylinder) and Borg-Warner T-10 ('64 1/2 and '65) shifters. They have shift levers in the same locations as our Ford Top Loader, however there are some minor differences in mounting
Assembly begins with the long...
Assembly begins with the long Reverse gear shift lever.
Here's where a four-speed...
Here's where a four-speed shifter differs-this stamped steel spacer, which is installed next.
Next is the First and Second...
Next is the First and Second gear shift lever.
Last is the Third/Fourth shift...
Last is the Third/Fourth shift lever, which has an offset.
Like the three-speed shifter,...
Like the three-speed shifter, the four-speed gets this thrust washer last before retainer and spring installation.
Four-speed shifters get stamped...
Four-speed shifters get stamped aluminum cups and springs. White grease is packed around them for lubrication and vibration absorption. These little pieces take the rattle out of a Mustang shifter.
Reverse lockout consists of...
Reverse lockout consists of a control just below the shift knob, cable, and lockout lever at the bottom. Reverse lockouts fail when cables break or stretch and you can't get the shifter into Reverse. When you squeeze the Reverse lockout, you're lifting the lockout lever to where the tab enters the shifter support. Release the lockout and the tab won't clear the support, making it impossible to shift into Reverse.
Although most are gone these...
Although most are gone these days, Mustang shifters were originally equipped with dust boots. Heat, ozone, and road grime take a toll on these boots. If you want to use the dust boot, be prepared for what it takes to install one. The shifter must be disconnected so the boot can be installed. Shifter handle and boot must also be removed to allow dust boot installation.