tranny noise

[Aussi440]

Everyone,  I have a tranny noise question, normally I am asking about my Charger, but this is a Pontiac of mine, 65 tempest, I just took out my 3 speed manual and put in a four speed, the three speed worked great no problems, put the four speed in and there is a scratchy noise whever the clutch is out whether I am moving or sitting still in neutral, once I push the clutch in it goes away, it doesn't go away right when the throwout bearing hits the fingers but when you fully depress the clutch,  I thought it could have been the throwout bearing riding on the fingers at first so I adjusted it out to check and still had the noise, is it a bearing noise or something?  Car shifts pretty good just has the scratchy noise.  Sorry to ask about my Pontiac but you guys are great with the Charger I have so I welcome all ideas.  Ryan

[elacruze]

A buddy of mine has a '65 Corvette with the same symptoms. The local Muncie Guru (worked for Smokey Yunick in the race shop years ago) told him "I don't know. Rebuild it or drive it until it presents".

[flyinlow]

We have a Tin Indian (04 Bonneville wife's car) so I will make a sugestion. Input shaft bearing. When the clutch is engaged it turns at engine speed. When you push the clutch in, the clutch disk and input shaft coast to a stop in a short time.   

[red79]

similar thing happened with my 833, turned out the throwout bearing was defective and intermittently catching, causing the whole thing to spin against the fork intermittently