360 manual gearbox required

Ebay is a good place to look. There are several dismantlers on there that part out cars.

GT car parts in Phoenix could also be a source. Co-part sells insurance totals.

You should be able to come up with one between all those.

 

Be careful. There are many floating around out there that are bad. I had to inspect 6 before I found one without a damaged ring and pinion. The 6th one only needed bearings and syncros.

Known good gear boxes get sold quickly. Junk yards are stacked up with transmissions from cars that had an intercooler failure.

 

Seems like that should be a last resort, I'm assuming you checked the linkage, cables, bushings, and tried different tranny fluids?

 

Did you have the throw out bearing rebuilt or replaced?

There are 2 seals that are replaceable if installed incorrectly they will stick and not release properly causing the input shaft to continue spinning and bad shifting-the car acts as if clutch is not fully released. They would also heat up as you use it making the problem worse. Ask me how I know...

My mechanic found it during a motor change when we decided to do the clutch at the same time. The bearing looked good - no leaks and spun ok by hand when cool, but would bind after it got heated. He replaced the seals and my transmission/clutch work perfectly after.

 

Adding to this, my car's previous owner did the same and spent an amount close to a telephone number for his bill, including new clutch, etc.

When I took over the car, I had exactly the same thing happen, where randomly when the car is warmed up, I could not engage either 5th or 6th gear.

Bottom line, it was a snapped shift bushing, which I've replaced with an aluminium one from Hill Engineering years ago.