Clutch or trans making this noise??? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

smoked68 · 06-01-2009, 04:58 PM

Ok heres my saga. The truck was making a bad noise from what I thought was the release bearing. Replaced it last friday. The bearing(release) fell apart when the trans was removed. I inspected the clutch as much as possible but was sure this was the issue at the time so we put the trans back in and tested. I adjusted the clutch and to my dismay its doing the same stinking noise. When the clutch peddle is in with the truck not moving no noise. When moving you get a sound kinda like a washing machine washing ( if youre washing rocks) and a clicking sound. And if you depress the clutch but down shift, the noise speeds up. I never let the clutch out just down shifting and coasting. Something in the trans (M-21) bearing or worse in there,? Clutch maybe.? Ideas,? suggestions. ?thanks, Mike

smoked68 · 06-02-2009, 05:01 PM

Well???

UltraBlue71 · 06-02-2009, 05:13 PM

Did you replace the pilot bushing while you were in there? Is you linkage adjusted properly? Sounds like the clutch isnt all the way disengaged.

smoked68 · 06-03-2009, 05:02 PM

Yes to all

Mayo · 06-03-2009, 06:30 PM

I would guess it is the tranny. My four speed took a dump on me in January, but starting in late December, it would make a kind of scratching, weird sounding noise in 2nd gear. I thought it was the clutch and I kept driving it, but it eventually got worse and the only gear it would make the noise in was 4th.

smoked68 · 06-04-2009, 04:02 PM

thanks, pulling it again sat...

Mayo · 06-04-2009, 04:55 PM

I am no mechanic, so if my guess is wrong, don't blame me.

06-01-2009, 04:58 PM	#1
smoked68 Registered User Join Date: Oct 2006 Location: Rock Hill, SC Posts: 421	Clutch or trans making this noise??? Ok heres my saga. The truck was making a bad noise from what I thought was the release bearing. Replaced it last friday. The bearing(release) fell apart when the trans was removed. I inspected the clutch as much as possible but was sure this was the issue at the time so we put the trans back in and tested. I adjusted the clutch and to my dismay its doing the same stinking noise. When the clutch peddle is in with the truck not moving no noise. When moving you get a sound kinda like a washing machine washing ( if youre washing rocks) and a clicking sound. And if you depress the clutch but down shift, the noise speeds up. I never let the clutch out just down shifting and coasting. Something in the trans (M-21) bearing or worse in there,? Clutch maybe.? Ideas,? suggestions. ?thanks, Mike __________________ 1968 chevy shortbed, Dark Shadow Gray 4 bolt 383 Stroker,Weiand Super Charger, disc brakes, 9 inch, 391 gear, 20" Eagle wheels, muncie 4 speed/ Hurst shifter, 4/7 drop, Hedman midlengths, 3 inch exhaust w/ 2 chamber flows. 1966 Mustang with 306 roller, c-4, 9 inch Detroit locker rear. 1965 Fastback Mustang w/347 stroker, top loader 4spd, 9 inch detroit locker. 1966 Mustang coup, 306 roller, c4, 9 inch. 65 Cobra, 427, T6oo, 9inch, of course. First gen Hayabusa, airbox mod and running 2 exhaust cams.. Zoom Zoom Zoom

06-02-2009, 05:01 PM	#2
smoked68 Registered User Join Date: Oct 2006 Location: Rock Hill, SC Posts: 421	Re: Clutch or trans making this noise??? Well??? __________________ 1968 chevy shortbed, Dark Shadow Gray 4 bolt 383 Stroker,Weiand Super Charger, disc brakes, 9 inch, 391 gear, 20" Eagle wheels, muncie 4 speed/ Hurst shifter, 4/7 drop, Hedman midlengths, 3 inch exhaust w/ 2 chamber flows. 1966 Mustang with 306 roller, c-4, 9 inch Detroit locker rear. 1965 Fastback Mustang w/347 stroker, top loader 4spd, 9 inch detroit locker. 1966 Mustang coup, 306 roller, c4, 9 inch. 65 Cobra, 427, T6oo, 9inch, of course. First gen Hayabusa, airbox mod and running 2 exhaust cams.. Zoom Zoom Zoom

06-02-2009, 05:13 PM	#3
UltraBlue71 Registered User Join Date: Feb 2009 Location: OKC OK Posts: 489	Re: Clutch or trans making this noise??? Did you replace the pilot bushing while you were in there? Is you linkage adjusted properly? Sounds like the clutch isnt all the way disengaged. __________________ "You can put lipstick on a pig, sure it's pretty pig, but it's still just a PIG... 71 LWB

06-03-2009, 05:02 PM	#4
smoked68 Registered User Join Date: Oct 2006 Location: Rock Hill, SC Posts: 421	Re: Clutch or trans making this noise??? Yes to all __________________ 1968 chevy shortbed, Dark Shadow Gray 4 bolt 383 Stroker,Weiand Super Charger, disc brakes, 9 inch, 391 gear, 20" Eagle wheels, muncie 4 speed/ Hurst shifter, 4/7 drop, Hedman midlengths, 3 inch exhaust w/ 2 chamber flows. 1966 Mustang with 306 roller, c-4, 9 inch Detroit locker rear. 1965 Fastback Mustang w/347 stroker, top loader 4spd, 9 inch detroit locker. 1966 Mustang coup, 306 roller, c4, 9 inch. 65 Cobra, 427, T6oo, 9inch, of course. First gen Hayabusa, airbox mod and running 2 exhaust cams.. Zoom Zoom Zoom

06-03-2009, 06:30 PM	#5
Mayo Cool Truck Join Date: Dec 2008 Location: Bowie,MD Posts: 1,869	Re: Clutch or trans making this noise??? I would guess it is the tranny. My four speed took a dump on me in January, but starting in late December, it would make a kind of scratching, weird sounding noise in 2nd gear. I thought it was the clutch and I kept driving it, but it eventually got worse and the only gear it would make the noise in was 4th. __________________ 1968 Chevrolet C20 Longhorn "Cool Truck" 1937 Chevrolet Pickup - Project Looking for a patina'd 68 50th Anniversary longbed

06-04-2009, 04:02 PM	#6
smoked68 Registered User Join Date: Oct 2006 Location: Rock Hill, SC Posts: 421	Re: Clutch or trans making this noise??? thanks, pulling it again sat... __________________ 1968 chevy shortbed, Dark Shadow Gray 4 bolt 383 Stroker,Weiand Super Charger, disc brakes, 9 inch, 391 gear, 20" Eagle wheels, muncie 4 speed/ Hurst shifter, 4/7 drop, Hedman midlengths, 3 inch exhaust w/ 2 chamber flows. 1966 Mustang with 306 roller, c-4, 9 inch Detroit locker rear. 1965 Fastback Mustang w/347 stroker, top loader 4spd, 9 inch detroit locker. 1966 Mustang coup, 306 roller, c4, 9 inch. 65 Cobra, 427, T6oo, 9inch, of course. First gen Hayabusa, airbox mod and running 2 exhaust cams.. Zoom Zoom Zoom

06-04-2009, 04:55 PM	#7
Mayo Cool Truck Join Date: Dec 2008 Location: Bowie,MD Posts: 1,869	Re: Clutch or trans making this noise??? I am no mechanic, so if my guess is wrong, don't blame me. __________________ 1968 Chevrolet C20 Longhorn "Cool Truck" 1937 Chevrolet Pickup - Project Looking for a patina'd 68 50th Anniversary longbed



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