Why would someone do this? I bought a 76 f250 460 4 speed and the guy has shims like washers in between the tranny and bell housing? He said to brake in the pilot bushing but doubt that? What do you guys think. Also the truck jumps when you let out the clutch. Will taking the shims out help

 

Some people have to use shims to put a 460 in with a 4spd. Either They don't have the correct pilot bearing or they use the 3 finger clutch which sticks out too far, so the shims make it work. You could probably get the right clutch and pilot and do away with them easy enough.

 

The 460 crank flange sticks out ~1/2" further than the 351M/400 flange. 460s with manuals didn't come factory til '83. To fit in the manual linkage housing, you have to use a 302 pilot bushing and diaphragm clutch. Or space it ~1/2" between the bell and engine. Or buy the kit from L&L.

 

We'll I don't feel like changing another flywheel and clutch and all. I just did that in my other 76 beater.... Can I just run it? Would that explain the clutch hopping a little? When taking off. So basically I need a 302 clutch and pilot bearing with a 460 flywheel?

 

The clutch hop sounds like a failing throw out bearing

 

You can run it but it would make me nervous. Sounds like you may have other clutch issues. Strength in the driveline is why manufacturers went to 1 piece transmission cases. Shims create the opportunity for flex in the driveline.

 

Carb is not adjusted. It was that lol. I thought it was major. I still want to fix that clutch down the road....

 

Well down the road there are several ways to do it. Since I had external balance with mine, I went with the L&L kit and it took all of the guesswork out. If internal, I have heard tales of 390 flywheel, 302 pilot bearing, etc.