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#1 |
Registered User
![]() Join Date: Oct 2006
Location: Southern Kalifornia
Posts: 3,066
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Hydraulic clutch question?
What year did GM start using the hydraulic clutch in full size trucks? I have a complete mechanical linkage set-up from an early 80's and would like to know if it will work in my '85 dually? Thank you.
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------------------------------------------------------ -Lance 2000 Chevy C2500, 5.7, 4L80e 1999 Suburban K2500, 7.4, 4L80e 1980 Camaro..son's car...PROJECT |
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#2 |
Registered User
Join Date: Dec 2009
Location: Fairbanks, AK
Posts: 1,830
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Re: Hydraulic clutch question?
I believe 1985 is the first year for hydro. You should have no problem finding a mechanical linkage pedal assembly: the hydraulic pedals are the hard ones to find.
Posted via Mobile Device
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-Marcus 1991 V3500 L29 454 4L80E NP205 D60/14 Bolt 4.56's 1984 K30 292 TH400 NP205 D60/14 Bolt 4.56's flat bed 7'6" Meyer Plow 2022 Silverado 3500 L8T Project Daily Driver Project Heavy Hauler Project Plow Truck |
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#3 |
Registered User
Join Date: Feb 2007
Location: Memphis MI
Posts: 1,851
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Re: Hydraulic clutch question?
Just have to drill a hole and get a grommet. Texas Firefighter did the a couple years ago.
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1987 2 ton ![]() 1982 ![]() Dad's 1981 ![]() Plus a mess o' tractors |
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#4 |
Senior Member
Join Date: May 2004
Location: Binghamton, NY
Posts: 3,454
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Re: Hydraulic clutch question?
85 or 86. I swapped my old 84 to hydro, all parts came off an 86. Both are getting tough to find, as yards aren't keeping these very long. I'd like to find a hydro for my truck, has the mech in it now and want to replace it....
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2000 GMC CCSB 454/4L80 6” lift SAS 1999 Chevy CCSB 454/NV4500 6” lift 1999 GMC Yukon 350/4L60 4" SAS |
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#5 |
Moderator
![]() Join Date: Oct 2008
Location: Wentworth, NH
Posts: 4,951
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Re: Hydraulic clutch question?
My 85 C10 had a hydraulic clutch.
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1959 M35A2 LDT465-1D SOLD 1967 Dodge W200 B383, NP420/NP201 SOLD 1969 Dodge Polara 500 B383, A833 SOLD 1972 Ford F250 FE390, NP435/NP205 SOLD 1976 Chevy K20, 6.5L, NV4500/NP208 SOLD 1986 M1008 CUCV SOLD 2000 GMC C2500, TD6.5L, NV4500 2005 Chevy Silverado LS 2500HD 6.0L 4L80E/NP263 2009 Impala SS LS4 V8 RTFM... GM Parts Books, GM Schematics, GM service manuals, and GM training materials...
And please let us know if and how your repairs were successful. |
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#6 |
Registered User
![]() Join Date: Oct 2006
Location: Southern Kalifornia
Posts: 3,066
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Re: Hydraulic clutch question?
Well, I have everything for the mechanical set-up,except the frame pivot bracket.
__________________
------------------------------------------------------ -Lance 2000 Chevy C2500, 5.7, 4L80e 1999 Suburban K2500, 7.4, 4L80e 1980 Camaro..son's car...PROJECT |
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#7 | |
Registered User
Join Date: Sep 2009
Location: Beaverton, OR from WA State
Posts: 1,515
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Re: Hydraulic clutch question?
Quote:
I understand the desire to use what you have, but...from my experience I would NOT add mechanical to a truck.
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Devin 1983 GMC High Sierra 2500, 4x4, RC/LB, 400 S.B., SM-465, NP-208, Corporate 10 bolt & 9.5" 14 bolt 1996 GMC Sierra SLE 3500 DRW, 4x4, EC/LB, Vortec 454, NV-4500, BW-4401, AAM 925 & AAM 1050 1997 GMC Sierra SLT 1500 4x4, Z71/F44, EC/SB, Vortec 350 My Introduction with my '83s History New Daily, the '96 |
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#8 |
Registered User
![]() Join Date: Oct 2006
Location: Southern Kalifornia
Posts: 3,066
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Re: Hydraulic clutch question?
I actually hit up all the yards this weekend...nothing.
__________________
------------------------------------------------------ -Lance 2000 Chevy C2500, 5.7, 4L80e 1999 Suburban K2500, 7.4, 4L80e 1980 Camaro..son's car...PROJECT |
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#9 |
Registered User
Join Date: Dec 2009
Location: Fairbanks, AK
Posts: 1,830
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Re: Hydraulic clutch question?
I agree on ditching the mech clutch linkage. I'm about to switch mine to hydraulic because the linkage interferes with my extended shock hoops. It is also notorious for hitting exhaust headers (except a certain set of hedman elites).
I had no luck at salvage yards and ended up posting a WTB ad on Pirate 4x4. I had several replies and ended up paying about $150 for a whole setup with master, slave, pedals, lines and reservoir. Be careful you get the right setup and not something cobbled together. I had o e guy try to sell me something that was not from our vintage of truck. Posted via Mobile Device
__________________
-Marcus 1991 V3500 L29 454 4L80E NP205 D60/14 Bolt 4.56's 1984 K30 292 TH400 NP205 D60/14 Bolt 4.56's flat bed 7'6" Meyer Plow 2022 Silverado 3500 L8T Project Daily Driver Project Heavy Hauler Project Plow Truck |
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#10 |
Registered User
Join Date: Sep 2010
Location: Lake Havasu City Arizona
Posts: 863
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Re: Hydraulic clutch question?
Just use a wilwood single master and your stock pedals. Better than factory.
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#11 |
Registered User
Join Date: Oct 2014
Location: Vienna, VA
Posts: 4
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Re: Hydraulic clutch question?
Really hate dredging up old threads...but I wish I had come across this option when I started collecting parts to do a NV4500 swap...first set of pedals I bought were not what they were advertised to be...but I could have saved a bunch of money buying a second set if I had seen this then. And yeah...try finding a set of Hydraulic Clutch / Hydroboost pedals....they are as close to unobtainium as anything you might actually stumble across if you look long enough. Moneys spent, and parts acquired in my case, but this can save someone else time and money.
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#12 |
Registered User
Join Date: Sep 2010
Location: Lake Havasu City Arizona
Posts: 863
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Re: Hydraulic clutch question?
Seven years and 70,000 miles later and this same setup is still in the truck trouble free. Manual chrysler brake master and wilwood clutch master.
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