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#1 |
Registered User
Join Date: May 2014
Location: Lancaster, OH
Posts: 81
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Clutch Chatter? 1970 4 speed
First off the truck is a '70 GMC K2500. 350 sm465 np205 setup. I've been through most of the truck just not trans and t-case. I believe them to be original, no rebuilds. Engine is a crate that was put in in the 80's. Truck has 80,000 miles. Engine about 20,000. I'm assuming they put a clutch in when the engine was done...? There wasn't any real gunk in the clutch area when I had dropped the inspection plate.
My problem is a real bad hopping when starting in 1st and reverse when trying to feather the clutch. It was pretty smooth when cold. But as it runs, like a half hour it gets pretty bad. I think the clutch is releasing in the top third of pedal travel (i'll have to check again). Is there any adjustment that would help me out or should I just be looking for a clutch? Now I have it an hour away at college with lots of stop and go traffic and parking... ![]() |
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#2 |
Registered User
Join Date: Dec 2013
Location: Seattle, WA
Posts: 155
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Re: Clutch Chatter? 1970 4 speed
A new clutch is in your future. I have the exact same thing going on right now with my truck. When the truck is cold the clutch is ok, the more i drive the worst it gets. The clutch has rough or hot spots on it. I have new clutch and flywheel but i dred dropping the trans and transfer case, its going to be very heavy.
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1970 GMC K2500 aka MaTeR ![]() 2007 Chevy Silverado 1500HD Classic |
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