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My 68’ w/ 4 speed came with an exhaust that was not installed. The pipes come thru the tunnel but the hanger is in the way. I can’t get them low enough to clear the hanger. Could I have the wrong part?
I saw where someone else had a similar issue and bought a high performance rear transmission mount from my local Advance Auto store to fix the problem. think it's the middle part shown in my picture. Not sure how that helps.
That looks just like mine but the hanger part seems to sit lower in the tunnel. Perhaps I'm doing the assembly in wrong order. Should I assembly the exhaust and then put the hanger in? Might be an issue getting the rear motor mount in. I'm so ready to move past this part of the shifter and the exhaust.
Could be the issue, the stock bracket is for the stock 2 inch exhaust. The aftermarket makes a replacement bracket for the 2 1/2 inch exhaust. I remember back when I had fun finding one in stock to fit my aftermarket exhaust.
I am guessing that that picture is a 2 inch exhaust although for a number of years I had a 2 1/2 inch exhaust. I tried going back to stock because of the reduced clearance in the rear which caused the pipes to scrape the ground occasionally. My car sits a little lower than spec and I think the wheels/tires fit the wheel wells better. I never had trouble getting the pipes to fit through the crossmember holes.
That is the bracket I have so I tried to go about it a different way. After connecting the exhausts I tried to put the hanger back on, no go, so I took off one side of the exhaust and put the hanger on with the motor mount. Seemed ok. When putting the metal bracket on everything looked good until I tried to put the bolts in for the motor mount. Doesn't want to line up. I tried loosening everything to scooch it over but I can only line up one hole and that is with putting a pair of needle nose pliers in the second hole and pulling it to line up. After a few hours under the car I've had enough for today. Thank you for all the input and photos.
Also, my mufflers seem VERY close to the body work in the back. Very close to the tires too.
PatM59
Take a picture of your pipes next to the tranny. That exhaust that came with it may not the best. I installed an exhaust from corvette central after decades of having a fabricated exhaust with headers on my old 68 and it fit like a dream.
I also had to tweak at the motor mounts and even add washers to move things over. Take a picture your exhaust at the tranny area so we can eyeball.
The stock mufflers do sit fairly tight in the back
Do you know where your exhaust came from?
Last edited by carriljc; Apr 25, 2024 at 07:12 PM.
It's all bendable and fixable if you have the option to cut and weld.....
If I remember I'll go out and get a pic of my corvette central mufflers tomorrow.
Meanwhile let me see if I have some old pics from before I modified my tranny crossmember
You can see the 1964-1965 2.5" downpipes going through the crossmember here.... should line up to right down the middle of the tranny crossmember hole. The mount is on the way it is because the Richmond 6-speed was fat in the back. https://www.corvetteforum.com/forums...post1598332194
Last edited by carriljc; Apr 26, 2024 at 12:14 AM.
Initially I was unable to put the rear exhaust through the tunnel past the hanger. The hanger was blocking too much of the tunnel. I removed the motor mount and hanger, removed the front pipes. To put it back together I hooked up the driver side exhaust, installed the hanger loosely and attache the passenger side exhaust. I was able to work the bolts in until I had to connect the motor mount to the crossmember mount. Finally worked my way backwards, installing the bolts for the motor mount followed by the side bolts and finally the bolts that hold the bracket to the crossmember. Took a bit of prying and tapping with the mallet to start he last bolt. This car is doing everything to get the best of me.
thanks every one that helped. Oh joy, I get to assemble my doors next. Those look like fun.
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Exhaust hanger problem
