My 74 has an M21 "65". It has studs coming out of the sideplate. It has been getting locked up between shifts, leaving me stuck in one gear "usually 3rd. Taking off from stop in 3rd w/M21 high 1st is test of tq, mine passed no problems. Got a rebuild kit HUR 373-3162, not enough parts, need whole deal. Ordered from Mid Am #612-285 to fit 63-67 Muncie. Their tech guy felt that I should but kit that fits trans rather than car/74. Mech now tells me the rods won't work and I need something else? What's wrong w/this pic?
The speedshop tells me I need HUR 373-8611.
I NEED HELP TO GET THE RIGHT PARTS

TIA
Rick

 

so it has a hurst shifter? or stock? If it's stock I'd buy a hurst shifter and be done.. good luck

 

I was having problem with my linkage also. It turned out the car needed new motor mounts after only 35 years. Imagine that! On the '69s, the linkage actually mounts to the frame and is not self-contained with the tranny. Consequently, if the motor moves, the linkage moves. We put in new motor mounts and re-aligned the linkage and the car feels and shifts like it's brand new.

 

The problem is that there are LOTS of linkage kits that look almost identical and only one "right" kit. If a different kit would have worked, there would not be multiple part numbers, right? Those multiple kits fit standard vehicles only. Imagine how many kits they would need to make if they included kits for all the possible swaps out there

If I were you, I would spend some time looking at the PDF files on the Mr Gasket/Hurst web site. There you can download the instruction manuals including the parts lists for the shifter kits and the install kits. The right setup is one that uses the required shifter, stick and mounting plate to match your year and model of vehicle with an install kit that also matches but there are issues.

The problem with the above "correct" setup in your case is you need the rods for your car and year from the correct install kit but you need the 3 tranny levers for the year of the tranny and there is not a specific kit for that. The levers on the transmission need to be the right length for the throw of the shifter and they need to have the right method of attachment, either stud/nut style or the bolt-on style. You can pick them out yourself or call Hurst and ask them for help.

Bottom line - get the shifter and install kit to match the vehicle and year then also buy the 3 tranny levers to match the tranny attachment style and the correct throw.

-Mark.

 

Stingr69: The Mid America tech said just the oppisite. He told me to fit the trans "studs on sideplate" first then fit the car. I will cal MA on Mon.
Too many #s, I'm going nuts!

Rick

 

Rick,
Here is the bad news. Forget what I said before as it might not apply here.

The Muncies used in the 70's have 3 bolt hole tailshafts. The 60's Muncies have 5 hole tail shafts. The 3 holes on the 70's style Muncies do not line up with any of the 5 holes on the tail shaft of the 60's Muncies even though the brackets will attach. The holes need to be in the right place to get the shifter to come up in the right place in the console. Since the old Muncies are not in the same place as the 70's Muncies, the shifters don't fit well when you swap. They bolt up to the trannys sometimes but then the linkage doesn't fit or the stick is in the wrong place.

Get a 70's Muncie, correct shifter, and correct install kit and it will fit like a glove.

I wish it were simpler.

-Mark.

 

Do you mean put 2 kits together? I have the trans kit for 65 M21, should I order the shifter kit for a 74?

Rick

 

Rick,
I just had a flash of light hit me while I was in the shower!!!

That Muncie tranny you have was used up through 68. The C3 console was used from 68 on up into the 70's

YOU PROBABLY JUST NEED A 68 CORVETTE SETUP!!!!

Sorry I did not think of it sooner. Should be a bolt-in or darn close.

-Mark.

 

The kit from MA fits 63-67 muncies. I'm willing to try a 68-70s shifter. I have no idea what i will do w/leftover parts.

Rick

 

The kit from Mid America probably fits 63-67 "VETTES" with muncies. It has to fit STOCK configuration (engine-trannys-cars-consoles) whole enchalada. If you do not know the differences in the trannys and the vehicles from year to year, you will not be able to figure out a swap situation by looking at a catalog.

The Vette console is different 63-67 vs 68 and up BUT the tranny itself is the same for 63-68. (63 tranny is actualy all by itself in a few areas but I digress).

The only C3 that used stud mounted tranny levers was the 68 (just like the 63-67). The 69 and up Muncie used bolt-on tranny levers. This is the reason the Hurst (P/N 373-4648) '68 Corvette Install Kit only fits one year of stock Vette. That is the only year that used the older style tranny with the newer style C3 body/console location.

Bottom line is you need the 391-7992 shifter assy (fits 68-79 Vette console type in catalog) with the 373-4648 install kit (used in catalog only for totaly stock 68 Vette BUT works for 68-79 Vette with 63-68 Muncie tranny).

-Mark.

 

It's early and i'm a little slow. Will any of the parts that already fit work? Do I send everything back and start over? I don't mind starting over, I'm just a little overwhelmed by this "simple" repair. TIA

Rick

 

Rick,
I am sorry but I did not look up the other part numbers of what you did buy.

If I were you I would order the 68 Vette shifter and matching 68 Vette install kit (from Jegs or where ever) then once the car was back together, I would send the other stuff you bought earlier back. The stock 68 Vette shifter and kits are the only C3 stuff that would work in a 74 Vette with a 65 style Muncie. It should be a straight bolt-in.

-Mark.

 

St69: What about the reverse lever? I am having problems w/speedo on drivers side getting in way of shift rods. I have a guy who thinks he has rods that will work but not allow for the speedo to work. There has to be a proper solution for this. I could keep swaping parts till i get it.

Rick

 

Is the speedo cable attach on the drivers side of the tailhousing? If so, I can see why you're having trouble with the shifter interfering. I'm not sure about the '68, but '69 and up had the cable attach on the passenger side. With the location of the shifter handle, I'm not sure how you could make the shifter work and not interfere with the speedometer cable on the drivers side.

You may want to find the correct tailhousing and try to get the configuration back to something close to the way the car was when stock in order to make everything fit as it should.

 

You probably have a 3846429 casting number tailhousing with that drivers side speedo output. I do not have any experience with that particular tailhousing or how well it fits a C3. It might not even have the shifter mounting holes in the right place.

You might be better off getting a 3857584 casting tail housing so it comes out the passenger side. Or just sell that tranny after you buy one that is closer to what you need. Not good news I am sorry to say.

-Mark.

 

I can't believe all the help the forum members have provided. The trans is a 65 M21. I think it came from something else "camero" and that's where the drivers side sp3eedo came from. I will get this problem solved. I never had reason to mess w/shifter. Now I find all the non stk equip and am having problems finding replacement parts "ya think"? I will keep you posted. My thanks to all who tried to help.

Rick