CharlieC
Senior Member
Posts: 1744
Loc: Flower Mound, TX,
Reg: 03-27-02
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05-26-12 10:03 PM - Post#2230212
Have a SM465 in my '74 Blazer and would like to switch to a hydraulic clutch so I don't have to get continue with the left leg body building exercises with the stock setup.
Anyone done it?
Charlie
"Yeah, I'm just going to clean it up and make it a driver." May 2002
'57 BelAir Conv. GMPP LSX/L92-440 T-56 (almost...)
'74 K5 Blazer 4x4
'09 Avalanche LTZ |
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Yenkonova
Senior Member
Posts: 731
Loc: Pueblo, CO
Reg: 07-23-04
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05-26-12 11:38 PM - Post#2230220
In response to CharlieC
I've not done this to my 75 K5 yet, but it is in the plan when my 5.3 comes together. One of my buddies did it to his 78 K10 when he swapped in a nv4500. It's relatively simple job provided you get all the correct parts.
The simple part of this is the fact that the later square body trucks from the mid-80's came with a hydro clutch setup with the 465 trans. Ideally you find one of these in the boneyard you can peel the parts from. Here's a link to his build for the 5-speed swap. The discussion of the hydro setup starts on page 3.
5-speed/hydro clutch swap
Rob Z.
'69 Nova (quick one)
'75 K5 Blazer (slow one)
'97 S10 2wd faux-SS (Daily Driver)
'04 TrailBlazer (Grocery getter)
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 Vaughn
"11th Year" Gold Supporting Member
Posts: 13552
Loc: Colorado Springs, CO
Reg: 08-08-04
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05-28-12 10:48 AM - Post#2230765
In response to Yenkonova
Yenko, that link is broken. I tried doing a search to find the new link, but there are several articles that my search terms showed up. Since you know more about the article, maybe you could do a search to find the specific article you were talking about.
One of the ones that showed up:
http://67-72chevytrucks.com/vboard/showthread.php?...
Search Page: http://www.google.com/custom?domains=67-72c hevytru...
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CharlieC
Senior Member
Posts: 1744
Loc: Flower Mound, TX,
Reg: 03-27-02
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05-28-12 08:26 PM - Post#2230941
In response to Vaughn
I guess there's (2) choices of using a slave to push the existing arm back, or it looks like McLeod has a hydraulic throwout bearing.
Any comments on the later?
Charlie
"Yeah, I'm just going to clean it up and make it a driver." May 2002
'57 BelAir Conv. GMPP LSX/L92-440 T-56 (almost...)
'74 K5 Blazer 4x4
'09 Avalanche LTZ |
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 someotherguy
Moderator
Posts: 23374
Age: 43
Loc: Texas
Reg: 08-01-03
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05-28-12 10:15 PM - Post#2230974
In response to CharlieC
In the later 5 speed transmissions GM began using an integrated slave/bearing arrangement; it works OK but failure rate seems about the same. The difference is, with GM's external slave setup, you can change the slave without removing the transmission. With the integrated style...you guessed it, transmission is coming out for slave replacement. Last one I did was on an NV4500, even worse out of a 3500HD model so it had the longer tailshaft housing with the drum parking brake setup. They're about 250 lbs. dry...
One upside to the integrated setup of course is that it gets rid of the fork/pivot assembly which is another wear area in the system.
Richard
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Vista Cruiser
Moderator
Posts: 4428
Age: 44
Loc: Erie Canal
Reg: 10-01-99
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05-28-12 10:36 PM - Post#2230981
In response to someotherguy
My old 80 plow truck (465) was so rusted out at the end, the cab would shift forward from hitting the piles and the clutch would get stiff. I'd back it into a tree to get the cab to go back. 
Still, the clutch was easy for whatever reason. The z-bar set-up in my 82 T/A was heavier.  Both had stock crap PP's.
I'd go with just the slave Charlie. Unless you have another reason to take the trans out.
Kenney AKA Blizzardboy
09 Impala SS....82 T/A.........72 Vista Cruiser
12 Cruze....98 Riviera...07 C-1500
68 Firebird
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CharlieC
Senior Member
Posts: 1744
Loc: Flower Mound, TX,
Reg: 03-27-02
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05-29-12 04:28 PM - Post#2231263
In response to Vista Cruiser
The tranny has to come out either way as the clutch needs to be replaced. I do think it's a good point the external slave can be changed vs the tranny coming out again for the integrated bearing option.
Thanks,
Charlie
"Yeah, I'm just going to clean it up and make it a driver." May 2002
'57 BelAir Conv. GMPP LSX/L92-440 T-56 (almost...)
'74 K5 Blazer 4x4
'09 Avalanche LTZ |
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Yenkonova
Senior Member
Posts: 731
Loc: Pueblo, CO
Reg: 07-23-04
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05-29-12 08:03 PM - Post#2231326
In response to CharlieC
Here's a better link.
http://67-72chevytrucks.com/vboard/showthread.php?t=431033&highligh t=dirtylarry
This one goes to the right place. He's got the swap figured down to make it look and work like factory.
Rob Z.
'69 Nova (quick one)
'75 K5 Blazer (slow one)
'97 S10 2wd faux-SS (Daily Driver)
'04 TrailBlazer (Grocery getter)
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