Getting closer, have hydraulic clutch basically setup - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**Yukon Jack** · 01-20-2004, 07:18 PM

Been getting work done on the truck slowly. Got the hydraulic clutch installation basically done last night. Buddy cut me the reinforcement for my firewall with his plasma cutter. Nice piece of equipment.

Another buddy made me the metal shim you see that positions the hydraulic cylinder correctly so the push rod will attach to the clutch pedal.

Got the cylinder mounted on the firewall, threaded the push rod and am using a 5/16" Heim joint to attach the rod to the clutch pedal. Cycles freely and the rod will push in as far as needed. Might have to make a stop to limit the clutch pedal.

Here are some pics.

**Yukon Jack** · 01-20-2004, 07:31 PM

Next pic

krue · 01-20-2004, 07:35 PM

Looks good. Ya'll do good work.

Bram · 01-20-2004, 07:36 PM

Hydraulic clutch, thats the way to go! Good work.

**Canadian694x4** · 01-20-2004, 10:20 PM

This may be a dumb question. So what's the advantage to using a Hydraulic Clutch setup?

gonebad2 · 01-20-2004, 11:50 PM

Very nice looking. It's a major pita setting it up. I did it one time in a '71. Your setup looks way better than mine did. If I was going to do it again, McCloud makes a hydraulic throwout bearing setup that I would use. Good Job!!!

**Yukon Jack** · 01-21-2004, 11:30 AM

The advantage for me using this clutch is having swapped in a big block in my 4x4 and using headers, I would have had to make custom linkage to get a manual clutch working. Still had to do some modifications to make this work but I think this was the easier way. Plus I had all the parts available off the donor vehicle.

67chevemall · 01-21-2004, 02:46 PM

It must soften up the cluch pedal too! NO?

I don't know about yours, but a long trip 1000miles and my knee is done for 2 weeks!

adjusting rods also sucks!!
How much is that set up!

BobbyK · 01-21-2004, 08:08 PM

Looks good.Nice to have friends...eh!:p

**Canadian694x4** · 01-21-2004, 08:10 PM

Quote:

Originally posted by Yukon Jack
The advantage for me using this clutch is having swapped in a big block in my 4x4 and using headers, I would have had to make custom linkage to get a manual clutch working. Still had to do some modifications to make this work but I think this was the easier way. Plus I had all the parts available off the donor vehicle.

Cool...Thanks for the info Yukon!

**Yukon Jack** · 01-23-2004, 11:48 AM

Made a change last night to using a clevis rod end rather than the Heim joint. Mainly did it cause I got that setup for the brake pedal booster, but I think with two attachment points on each side of the pedal this will be stronger.

**Yukon Jack** · 01-23-2004, 11:51 AM

Next I got the hydroboost brake cylinder hung on the firewall. I had to knock the two lower stud bolts off the pedal assembly and drill a couple holes but no biggie. Probably have to modify how the steering column attaches to the firewall as the brake booster bracket covers one of the attachment holes.

**Yukon Jack** · 01-23-2004, 11:53 AM

Mounted the rod to the brake pedal same as with the clutch. The brake booster rod is 3/8" while the hydraulic clutch rod is 5/16". I cut off the end of the brake booster push rod, threaded it and got it connected to the brake pedal using another clevis rod end.

72 CustomCamper · 01-23-2004, 02:01 PM

Hey Yukon, what are you using for a slave cylinder???

Chuck

**Yukon Jack** · 01-23-2004, 02:05 PM

The whole setup (brake booster and hydraulic clutch) came from a donor 1989 1 Ton crew cab.

Bram · 01-23-2004, 02:09 PM

Hey Yukon, this is off the subject but, what kind of headers are you running on that 454?

**Yukon Jack** · 01-23-2004, 02:33 PM

For exhaust I bought Dynomax Cerama-Coated headers. As 67-72 4x4's didn't come with big blocks, I ordered the big block headers for 67-87 BBC 2wd, part no. 86003. Had to massage the engine tower and frame a little, but the headers fit very well now and the collectors should be fine with the transfer case.

*1972C10* · 01-23-2004, 02:39 PM

Thats Pretty Slick Install there.

I have a 68 Im about to have to fab up a hydralic clutch setup I was considering useing a master cylinder off of an 86-87 One Ton Mainly cause its cheap and it mounts flat

Was the rod proper lenght or close to it for your app?

I might look into the newer model If the 87 Gives Me any Problems.

**Yukon Jack** · 01-23-2004, 04:12 PM

I had to cut some of the length off the rod, thread it and put the end on that you see. Just make sure you take time and make sure the push rod will function correctly. I had to lower the hydraulic cylinder to get it in the right position.

*1972C10* · 01-24-2004, 01:26 AM

I was going to take the straitedge off my sqaure and put it on the side of the pedel and mark me a hole that would be pretty even with the area where the rod will hook Thats basically all i lack to have my T5 conversion complete.

Mike C · 01-24-2004, 11:35 AM

Looks great Mark! Some first class fab work. Can't wait to see some finished pics.

01-20-2004, 07:18 PM	#1
Yukon Jack Post Whore Join Date: Feb 2000 Location: Rose Hill, KS, USA Posts: 12,684	Hydraulic clutch and Hydroboost install Been getting work done on the truck slowly. Got the hydraulic clutch installation basically done last night. Buddy cut me the reinforcement for my firewall with his plasma cutter. Nice piece of equipment. Another buddy made me the metal shim you see that positions the hydraulic cylinder correctly so the push rod will attach to the clutch pedal. Got the cylinder mounted on the firewall, threaded the push rod and am using a 5/16" Heim joint to attach the rod to the clutch pedal. Cycles freely and the rod will push in as far as needed. Might have to make a stop to limit the clutch pedal. Here are some pics. Attached Images __________________ 1970 Blazer with a 400 sbc and 4" lift 1980 Pontiac Trans Am, 455 Oldsmobile 2012 Kawasaki Concours 14 Last edited by Yukon Jack; 01-16-2007 at 03:47 PM.

01-20-2004, 07:31 PM	#2
Yukon Jack Post Whore Join Date: Feb 2000 Location: Rose Hill, KS, USA Posts: 12,684	Next pic Attached Images __________________ 1970 Blazer with a 400 sbc and 4" lift 1980 Pontiac Trans Am, 455 Oldsmobile 2012 Kawasaki Concours 14

01-20-2004, 07:35 PM	#3
krue Designated A-hole! Join Date: Mar 2003 Location: South Mississippi Posts: 36,450	Looks good. Ya'll do good work. __________________ "If it ain't broke, fix it 'til it is!" Being stupid ain't illegal. We're Still Debt Free Except for the House!!! www.daveramsey.com 70 GMC SWB Stepside project "Green Booger" soon to be 6.0l/4l80e 93 S-10 "Poppaw's Truck"

01-20-2004, 07:36 PM	#4
Bram Broke Join Date: Aug 2001 Location: West Plains,MO Posts: 385	Hydraulic clutch, thats the way to go! Good work. __________________ 72CheyenneSuper1ton4x4BigBlock

01-20-2004, 10:20 PM	#5
Canadian694x4 Born To Lose Club Join Date: Feb 2003 Location: Calgary, Alberta/Oxenden, Ontario, Great White North Posts: 13,306	This may be a dumb question. So what's the advantage to using a Hydraulic Clutch setup? __________________ Brian Smith - "Born To Lose" 1969 Chevrolet K10 LWB Fleetside - Proud Owner For 20 Yrs - 1 of 208 Built & Sold In Canada! - 283 V8/350TH/NP208, 2" All Spring Lift, 32" Good Year MT/R's. 1972 GMC K2500 Custom LWB Fleetside - Proud Owner For 2 Yrs - 1 of 571 Built & Sold In Canada! - 350 V8/SM465/NP205, 4” Rough Country Lift, 33” Interco TSL Thornbirds 2007.5 GMC Sierra SLE 2500HD 4x4 - Proud Owner For 15 Yrs - 6.6L V8 Duramax Diesel/Allison 1000, 2" Lift, 33" Mickey Thompson MTZ's. 2008 Yamaha Raptor 700r - Proud Owner For 13 Yrs - ITP Mud Lites. 2015 John Deere 1025R - Proud Owner For 6 Yrs - 24HP Diesel/H120/54D/260B/SB1154.

01-20-2004, 11:50 PM	#6
gonebad2 Merciless Butcher Join Date: Oct 2003 Location: CC Nevada Posts: 1,447	Very nice looking. It's a major pita setting it up. I did it one time in a '71. Your setup looks way better than mine did. If I was going to do it again, McCloud makes a hydraulic throwout bearing setup that I would use. Good Job!!! __________________ Your Bought And Sold....I Got Your Soul!

01-21-2004, 11:30 AM	#7
Yukon Jack Post Whore Join Date: Feb 2000 Location: Rose Hill, KS, USA Posts: 12,684	The advantage for me using this clutch is having swapped in a big block in my 4x4 and using headers, I would have had to make custom linkage to get a manual clutch working. Still had to do some modifications to make this work but I think this was the easier way. Plus I had all the parts available off the donor vehicle. __________________ 1970 Blazer with a 400 sbc and 4" lift 1980 Pontiac Trans Am, 455 Oldsmobile 2012 Kawasaki Concours 14

01-21-2004, 02:46 PM	#8
67chevemall Registered User Join Date: Apr 2003 Location: NB Posts: 3,367	It must soften up the cluch pedal too! NO? I don't know about yours, but a long trip 1000miles and my knee is done for 2 weeks! adjusting rods also sucks!! How much is that set up! __________________ 1968 Chevy C10 307 3ott fleetside 1967 Chevy C/10 V8, 3spd, fleetside lwb.Sold 1967 Chev C/10 step, 383, M21. SOLD

01-21-2004, 08:08 PM	#9
BobbyK Registered User Join Date: May 2000 Location: Petrolia,Ontario,Canada but working in Port Huron,Mi. Posts: 1,771	Looks good.Nice to have friends...eh!:p __________________ 71 blazer,350SBC,approx.375HP,700R4,factory GM TPI.Dual electric fans,33x12.5x15 ATR on stock suspension. Petrolia,Ontario,Canada but working in Port Huron,MI. See ALL my Blazer pic's HERE

01-23-2004, 11:48 AM	#11
Yukon Jack Post Whore Join Date: Feb 2000 Location: Rose Hill, KS, USA Posts: 12,684	Made a change last night to using a clevis rod end rather than the Heim joint. Mainly did it cause I got that setup for the brake pedal booster, but I think with two attachment points on each side of the pedal this will be stronger. __________________ 1970 Blazer with a 400 sbc and 4" lift 1980 Pontiac Trans Am, 455 Oldsmobile 2012 Kawasaki Concours 14 Last edited by Yukon Jack; 06-24-2010 at 09:34 AM.

01-23-2004, 11:51 AM	#12
Yukon Jack Post Whore Join Date: Feb 2000 Location: Rose Hill, KS, USA Posts: 12,684	Next I got the hydroboost brake cylinder hung on the firewall. I had to knock the two lower stud bolts off the pedal assembly and drill a couple holes but no biggie. Probably have to modify how the steering column attaches to the firewall as the brake booster bracket covers one of the attachment holes. __________________ 1970 Blazer with a 400 sbc and 4" lift 1980 Pontiac Trans Am, 455 Oldsmobile 2012 Kawasaki Concours 14 Last edited by Yukon Jack; 01-16-2007 at 03:35 PM.

01-23-2004, 11:53 AM	#13
Yukon Jack Post Whore Join Date: Feb 2000 Location: Rose Hill, KS, USA Posts: 12,684	Mounted the rod to the brake pedal same as with the clutch. The brake booster rod is 3/8" while the hydraulic clutch rod is 5/16". I cut off the end of the brake booster push rod, threaded it and got it connected to the brake pedal using another clevis rod end. __________________ 1970 Blazer with a 400 sbc and 4" lift 1980 Pontiac Trans Am, 455 Oldsmobile 2012 Kawasaki Concours 14 Last edited by Yukon Jack; 01-16-2007 at 03:36 PM.

01-23-2004, 02:01 PM	#14
72 CustomCamper huh ??? Join Date: Nov 2002 Location: Fredericksburg,Va. Posts: 3,369	Hey Yukon, what are you using for a slave cylinder??? Chuck __________________ 90 Blazer Silverado 350w/ 700R4 and 32" Kelly's "I am a bomb technician. If you see me running try to keep up!"

01-23-2004, 02:05 PM	#15
Yukon Jack Post Whore Join Date: Feb 2000 Location: Rose Hill, KS, USA Posts: 12,684	The whole setup (brake booster and hydraulic clutch) came from a donor 1989 1 Ton crew cab. __________________ 1970 Blazer with a 400 sbc and 4" lift 1980 Pontiac Trans Am, 455 Oldsmobile 2012 Kawasaki Concours 14

01-23-2004, 02:09 PM	#16
Bram Broke Join Date: Aug 2001 Location: West Plains,MO Posts: 385	Hey Yukon, this is off the subject but, what kind of headers are you running on that 454? __________________ 72CheyenneSuper1ton4x4BigBlock



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01-23-2004, 02:33 PM	#17
Yukon Jack Post Whore Join Date: Feb 2000 Location: Rose Hill, KS, USA Posts: 12,684	For exhaust I bought Dynomax Cerama-Coated headers. As 67-72 4x4's didn't come with big blocks, I ordered the big block headers for 67-87 BBC 2wd, part no. 86003. Had to massage the engine tower and frame a little, but the headers fit very well now and the collectors should be fine with the transfer case. __________________ 1970 Blazer with a 400 sbc and 4" lift 1980 Pontiac Trans Am, 455 Oldsmobile 2012 Kawasaki Concours 14

01-23-2004, 02:39 PM	#18
1972C10 Account Suspended Join Date: Dec 2003 Location: Texas Posts: 2,686	Thats Pretty Slick Install there. I have a 68 Im about to have to fab up a hydralic clutch setup I was considering useing a master cylinder off of an 86-87 One Ton Mainly cause its cheap and it mounts flat Was the rod proper lenght or close to it for your app? I might look into the newer model If the 87 Gives Me any Problems.

01-23-2004, 04:12 PM	#19
Yukon Jack Post Whore Join Date: Feb 2000 Location: Rose Hill, KS, USA Posts: 12,684	I had to cut some of the length off the rod, thread it and put the end on that you see. Just make sure you take time and make sure the push rod will function correctly. I had to lower the hydraulic cylinder to get it in the right position. __________________ 1970 Blazer with a 400 sbc and 4" lift 1980 Pontiac Trans Am, 455 Oldsmobile 2012 Kawasaki Concours 14

01-24-2004, 01:26 AM	#20
1972C10 Account Suspended Join Date: Dec 2003 Location: Texas Posts: 2,686	I was going to take the straitedge off my sqaure and put it on the side of the pedel and mark me a hole that would be pretty even with the area where the rod will hook Thats basically all i lack to have my T5 conversion complete.

01-24-2004, 11:35 AM	#21
Mike C Registered User Join Date: Dec 1999 Location: Austin, TX, USA Posts: 7,715	Looks great Mark! Some first class fab work. Can't wait to see some finished pics. __________________ 44 Willys MB 52 M38A1 64 Corvette Coupe 68 Camaro 'vert LT1 & TH700 69 Z/28 355 12.6's @110 69 Chevy Short Step 4 1/2"/7" drop 72 Jimmy 4WD 4spd 4" & 35's 02 GMC 2500HD 4x4 Duramax

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