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crazy longhorn · 11-15-2021, 08:09 PM

I have rebuilt a bunch of those GM stick shift trans....It has been a long time since I have been into your style trans. That said,I will have to say....if it shifts with no gear clash, I would bet that you have a problem with end play in the main shaft. That can come from worn bearings , or needs shims. when you talk about the vibrations, on/off the throttle....I would guess bearings (input or rear). On your style trans, what I broke, was the low/rev slider gear

This was many yrs ago, & I went int Saginaws& Muncies after that. If I tore one up,it was usually the input bearing that let go 1st! If I pull one down, for a fresh clutch / & hat...that trans will get a new front bearing

Longhorn

11-15-2021, 08:09 PM	#11
crazy longhorn Fabricate till you "puke" Join Date: Jun 2002 Location: Ill Posts: 9,403	Re: Holding my 3-speed in 3rd gear or pops out I have rebuilt a bunch of those GM stick shift trans....It has been a long time since I have been into your style trans. That said,I will have to say....if it shifts with no gear clash, I would bet that you have a problem with end play in the main shaft. That can come from worn bearings , or needs shims. when you talk about the vibrations, on/off the throttle....I would guess bearings (input or rear). On your style trans, what I broke, was the low/rev slider gear This was many yrs ago, & I went int Saginaws& Muncies after that. If I tore one up,it was usually the input bearing that let go 1st! If I pull one down, for a fresh clutch / & hat...that trans will get a new front bearing Longhorn __________________ 69 longhorn,4" chop,3/5 drop, 1/2 ton suspension/disc brakes,1 1/2" body drop,steel tilt clip, 5.3/Edelbrock rpm intake/600 carb, Hooker streetrod shorties,2 1/2" exhaust/ H pipe/50's Flows , 6 spd Richmond trans,12 bolt/ 3.40 gears....