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06-22-2010, 08:00 PM
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#1 |
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Registered User
Join Date: Sep 2007
Location: Sarnia, Ontario
Posts: 571
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80 GMC C25- Manual or Hydraulic Clutch?
Just wondering whether my 80 GMC C25 truck with a 4 speed standard transmission is a manual or hydraulic clutch. How would I go about telling which it is, or does someone on the board know?
Thanks!
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1961 GMC 930- SOLD 1979 GMC C35 Single Wheel Camper Special- SOLD 1980 GMC C25 Camper Special- SOLD 1983 Chevrolet C10- SOLD 1983 Chevrolet Camaro- SOLD 1985 GMC C1500 (Dad's truck) 1985 GMC C3500 Crew Cab Dually- TRADED FOR 61 GMC 1997 Dodge Ram 1500 V6 Shortbox- Daily Driver 
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06-22-2010, 08:04 PM
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#2 |
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Registered User
Join Date: Jan 2007
Location: Toronto Canada
Posts: 265
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Re: 80 GMC C25- Manual or Hydraulic Clutch?
I bet it is manual like mine. You would have to have a slave cylinder for the hydraulic fluid
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06-22-2010, 08:05 PM
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#3 |
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Next!
Join Date: Jan 2003
Location: Eastern Pa.
Posts: 2,483
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Re: 80 GMC C25- Manual or Hydraulic Clutch?
Should have a manual clutch. My 83 has a manual, my 86 hydraulic. Somewhere in between they changed.
__________________
86 K30 CUCV M1028A1 86 K30 CUCV M1028a2 dually 86 K30 C&C 6.2 4:56s, 4M, 11,000 gvw, ex fire truck, now lowboy dump More square bodies and CUCVs than I care to admit to 2020 Silverado K3500HD Work truck |
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06-22-2010, 08:40 PM
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#4 |
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Registered User
Join Date: Jul 2007
Location: Tucson, AZ
Posts: 3,189
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Re: 80 GMC C25- Manual or Hydraulic Clutch?
It will be manual (mechanical) clutch like my 83. You can check a catalog, like LMC online, and see the graphics of what parts are involved with the mechanical vs. hydraulic clutch, then compare your setup to the one in the catalogs.
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06-22-2010, 09:31 PM
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#5 |
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Registered User
Join Date: Nov 2009
Location: goodland,ks
Posts: 217
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Re: 80 GMC C25- Manual or Hydraulic Clutch?
they changed to hydralic in 85
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mitch 87 chevy short box 4wd tbi 350/built 700r4/np208 3.73s |
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06-25-2010, 01:25 PM
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#6 |
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Registered User
Join Date: Sep 2007
Location: Sarnia, Ontario
Posts: 571
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Re: 80 GMC C25- Manual or Hydraulic Clutch?
Right on, thanks for the help!
__________________
1961 GMC 930- SOLD 1979 GMC C35 Single Wheel Camper Special- SOLD 1980 GMC C25 Camper Special- SOLD 1983 Chevrolet C10- SOLD 1983 Chevrolet Camaro- SOLD 1985 GMC C1500 (Dad's truck) 1985 GMC C3500 Crew Cab Dually- TRADED FOR 61 GMC 1997 Dodge Ram 1500 V6 Shortbox- Daily Driver
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