Hydraulic clutch conversion - The 1947 - Present Chevrolet & GMC Truck Message Board Network

cheap · 10-05-2015, 11:09 PM

Anybody done one on an older square? Are there any good kits for it?

**hatzie** · 10-06-2015, 03:28 AM

Get the pedals from an 85 up MT truck.

bmchevy1979 · 10-06-2015, 09:44 PM

Ive been curious about this aswell its harder to find 85 and up trucks in my area how far off is the pedal geometry I can fabricate one I just am not sure how different they are. I'm getting tired of the linkage popping off the trans when I wheel hard my truck flexes a lot

wraprail · 10-16-2015, 07:10 PM

I will figure out this mobile crap someday. Anyway, I used a Wilwood 3/4 single master inline with the factory manual clutch pedal and level (and right next to) the brake master.
Connected to the pedal with a 1/4 rod end and renenforced thr firewal with some 3/16" flat bar.
Won't work with power brakes though. .

**hatzie** · 10-17-2015, 11:06 AM

The 85+ pedals have torque rods from the pedal bracket to the clutch mounting holes that re-enforce the firewall. You'll need to come up with a suitable alternative to use the older pedals.
Not sure what other issues you'll find.

Look up CK RV Brake/Clutch Pedals from 1985-1987. They are out there.
http://car-part.com

scruffre · 10-17-2015, 01:02 PM

I did the change over 5 years ago, so far still running good. I used the set up from a 87 1/2 ton . Heres the link http://67-72chevytrucks.com/vboard/s...d.php?t=399439

wraprail · 10-17-2015, 01:22 PM

Posted via Mobile Device

bmchevy1979 · 10-17-2015, 01:43 PM

By chance does anyone have and pics of the hydraulic clutch pedal I know about the reinforcement rods but how different are the pedals themselves. I have seen a writeup on how to mount slave to a non hydraulic bellhousing aswell I just need the under dash help before I decide to tackle this. And like I said it's harder to find them in my area unless you want to buy a complete truck the wrecking yards rarely have standard trans trucks and when they do they are 70s trucks

**hatzie** · 10-17-2015, 05:09 PM

I called the salvage outfits listing parts on the website in Post #5 till I found one willing to UPS the whole setup. They included the clutch master cylinder and fluid reservoir because I asked for them. I think it was $45 shipped... YMMV.

scruffre · 10-17-2015, 10:21 PM

This may help. it's an old ad that was on here http://67-72chevytrucks.com/vboard/s...d.php?t=443477
It's the same set up I put in my 78 Blazer

10-05-2015, 11:09 PM	#1
cheap Registered User Join Date: Jul 2015 Location: earth Posts: 99	Hydraulic clutch conversion Anybody done one on an older square? Are there any good kits for it?

10-06-2015, 03:28 AM	#2
hatzie Moderator Join Date: Oct 2008 Location: Wentworth, NH Posts: 4,977	Re: Hydraulic clutch conversion Get the pedals from an 85 up MT truck. __________________ 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... 1973-1991 GM Light Truck Service, Unit/Overhaul, Wiring Manuals, Parts Books and Some 1968-1999 GM Service Training textbooks in PDF 1988-1998 GMT400 CK service manual project 1988-1993 GMT400 CK parts books. 1967-1972 GM Light, Medium, & Heavy Truck Service Manuals in PDF Please include at least the year and model in your threads. It'll be easier to answer your questions. And please let us know if and how your repairs were successful.

10-06-2015, 09:44 PM	#3
bmchevy1979 Registered User Join Date: Dec 2010 Location: Visalia, Ca Posts: 707	Re: Hydraulic clutch conversion Ive been curious about this aswell its harder to find 85 and up trucks in my area how far off is the pedal geometry I can fabricate one I just am not sure how different they are. I'm getting tired of the linkage popping off the trans when I wheel hard my truck flexes a lot __________________ <Brandon> 1974 Chevrolet K5 Blazer 350sbc/SM465/NP205, dana44 front, corp 14bolt rear with 4.10s and a powertrax locker, custom rear bumper 400sbc in the works. 1981 GMC C1500 stepside 250i6, 3spd, 12bolt with 3.08s 2.5/4drop on 15x10 with 275/50r15 81 GMC C3500 cab-chassis dually with utility bed 350sbc, Sm465, 14bolt with 4.10s nv4500 getting ready to go in 1979 Chevrolet K5 R.I.P. http://67-72chevytrucks.com/vboard/s...d.php?t=434096 1976 Chevrolet C10 R.I.P. http://67-72chevytrucks.com/vboard/s...d.php?t=434195

10-16-2015, 07:10 PM	#4
wraprail Registered User Join Date: Sep 2010 Location: Lake Havasu City Arizona Posts: 863	I will figure out this mobile crap someday. Anyway, I used a Wilwood 3/4 single master inline with the factory manual clutch pedal and level (and right next to) the brake master. Connected to the pedal with a 1/4 rod end and renenforced thr firewal with some 3/16" flat bar. Won't work with power brakes though. . Last edited by wraprail; 10-17-2015 at 01:16 PM.

10-17-2015, 01:02 PM	#6
scruffre Registered User Join Date: Apr 2009 Location: Carrying Place, Ontario Posts: 48	Re: Hydraulic clutch conversion I did the change over 5 years ago, so far still running good. I used the set up from a 87 1/2 ton . Heres the link http://67-72chevytrucks.com/vboard/s...d.php?t=399439 __________________ Dave

10-17-2015, 11:06 AM	#5
hatzie Moderator Join Date: Oct 2008 Location: Wentworth, NH Posts: 4,977	Re: Hydraulic clutch conversion The 85+ pedals have torque rods from the pedal bracket to the clutch mounting holes that re-enforce the firewall. You'll need to come up with a suitable alternative to use the older pedals. Not sure what other issues you'll find. Look up CK RV Brake/Clutch Pedals from 1985-1987. They are out there. http://car-part.com __________________ 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... 1973-1991 GM Light Truck Service, Unit/Overhaul, Wiring Manuals, Parts Books and Some 1968-1999 GM Service Training textbooks in PDF 1988-1998 GMT400 CK service manual project 1988-1993 GMT400 CK parts books. 1967-1972 GM Light, Medium, & Heavy Truck Service Manuals in PDF Please include at least the year and model in your threads. It'll be easier to answer your questions. And please let us know if and how your repairs were successful.

10-17-2015, 01:22 PM	#7
wraprail Registered User Join Date: Sep 2010 Location: Lake Havasu City Arizona Posts: 863	Re: Hydraulic clutch conversion Posted via Mobile Device

10-17-2015, 01:43 PM	#8
bmchevy1979 Registered User Join Date: Dec 2010 Location: Visalia, Ca Posts: 707	Re: Hydraulic clutch conversion By chance does anyone have and pics of the hydraulic clutch pedal I know about the reinforcement rods but how different are the pedals themselves. I have seen a writeup on how to mount slave to a non hydraulic bellhousing aswell I just need the under dash help before I decide to tackle this. And like I said it's harder to find them in my area unless you want to buy a complete truck the wrecking yards rarely have standard trans trucks and when they do they are 70s trucks __________________ <Brandon> 1974 Chevrolet K5 Blazer 350sbc/SM465/NP205, dana44 front, corp 14bolt rear with 4.10s and a powertrax locker, custom rear bumper 400sbc in the works. 1981 GMC C1500 stepside 250i6, 3spd, 12bolt with 3.08s 2.5/4drop on 15x10 with 275/50r15 81 GMC C3500 cab-chassis dually with utility bed 350sbc, Sm465, 14bolt with 4.10s nv4500 getting ready to go in 1979 Chevrolet K5 R.I.P. http://67-72chevytrucks.com/vboard/s...d.php?t=434096 1976 Chevrolet C10 R.I.P. http://67-72chevytrucks.com/vboard/s...d.php?t=434195

10-17-2015, 05:09 PM	#9
hatzie Moderator Join Date: Oct 2008 Location: Wentworth, NH Posts: 4,977	Re: Hydraulic clutch conversion I called the salvage outfits listing parts on the website in Post #5 till I found one willing to UPS the whole setup. They included the clutch master cylinder and fluid reservoir because I asked for them. I think it was $45 shipped... YMMV. __________________ 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... 1973-1991 GM Light Truck Service, Unit/Overhaul, Wiring Manuals, Parts Books and Some 1968-1999 GM Service Training textbooks in PDF 1988-1998 GMT400 CK service manual project 1988-1993 GMT400 CK parts books. 1967-1972 GM Light, Medium, & Heavy Truck Service Manuals in PDF Please include at least the year and model in your threads. It'll be easier to answer your questions. And please let us know if and how your repairs were successful. Last edited by hatzie; 10-17-2015 at 05:30 PM.

10-17-2015, 10:21 PM	#10
scruffre Registered User Join Date: Apr 2009 Location: Carrying Place, Ontario Posts: 48	Re: Hydraulic clutch conversion This may help. it's an old ad that was on here http://67-72chevytrucks.com/vboard/s...d.php?t=443477 It's the same set up I put in my 78 Blazer __________________ Dave

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