Auto-to-Manual Butcher Job

[AuroraGirl]

Yeah, a manual will have a big spring on the inside, a mess of linkage, a plunger rod that goes through the floor, and the linkage physically interacts with clutch/throwout arm.
In a Hydraulic, the pedal presses a plunger that goes into a single port clutch master cylinder, from that, there are lines that go down to a hydraulic slave cylinder, the depresses the clutch throw out arm.
It's easy to tell, they look totally different. Just look for a reservoir under the hood that says clutch. If you have one, you have hydraulic.
The bell housing for a hydro will have a bracket to hold the piston. A manual bell housing will not.
Check out the pics I sent a while back, you'll see the difference.

I meant only about he bell housing. The only parts, to my knowledge, I have are the bellhousing, a fork, and a rubber boot, and a cover plate/inspection cover with a starter cutout on it.

I can look in the box but I never found a hydraulic reservoir but I never looked either. But my grandpa almost exclusively chopped trucks that were damaged or destined for scrap that he found someome willing to part with it usually from work buddies(he did labor work in various fields over years and had a lot of connections

old friend Dan who’s 13 year old truck ate a guard rail after being t boned by the unattentive driver right at the drivers fender would be a very possible scenario why I may not have any hydraulic parts on the engine side but the engine/trans were okay etc

didntn happen but it was example. I’ll look for these pics. I saw something in here one day about clutch pedals having 4 studs instead of two or something and I thought it was weird because mine have 4 that I have laying around but I didn’t verify that anywhere

so, if I see your pics if I think I have similar one oh boy money

 

[AuroraGirl]

well you see my '80 is a manual and it can only be started in neutral and the clutch HAS to be in during the whole process. I'd mimic that clutch setup there as much as i could, judging by the undercarriage components everything down there is the same, although my '80 has two springs to the chassis. I just don't want to tear down my truck's dash and all that and disable it as i basically daily drive the thing, with a car show on Sunday too i believe.

Oh you’re on an 80? I have factory manual trans the pedal and all should be factory mechanical it’s just my motor mount and tcase mount put a little flex on the fork. And the rod but only a tiny bit (where it rotates in sleeve)

I believe I have he parts , maybe not all, but haven’t checked though, of a hydraulic setup from 85-87, but it may be the parts off a 77 k25 mechanical

 

[Powerhouse Ranch]

Oh you’re on an 80? I have factory manual trans the pedal and all should be factory mechanical it’s just my motor mount and tcase mount put a little flex on the fork. And the rod but only a tiny bit (where it rotates in sleeve)

I believe I have he parts , maybe not all, but haven’t checked though, of a hydraulic setup from 85-87, but it may be the parts off a 77 k25 mechanical

yeah the '80 is the good, running complete one. it is my mechanical base that i'm referring to for my '88 project. so far so good. all i really need now are the undercarriage springs and a MASSIVE clutch adjustment

 

[AuroraGirl]

yeah the '80 is the good, running complete one. it is my mechanical base that i'm referring to for my '88 project. so far so good. all i really need now are the undercarriage springs and a MASSIVE clutch adjustment

So your 88, which is supposed to be hydraulic, was made linkage but very ghetto?

 

[Powerhouse Ranch]

So your 88, which is supposed to be hydraulic, was made linkage but very ghetto?

was it supposed to be hydraulic? Does this occur after such a year like 87 with the TBI? i assume so. . . ANYWAY the truck long before my time was at one point a military truck, probably second owner if i had to guess; there are alot of signs pointing to this. then it went to some guy who decided "hey, let's put a SM465 in this thing instead of the automatic (and pair it with the NP205, whether factory or not, idk) but either way it is quite the ulitmate duo behind a 350 sbc.

Yes, it is sloppy in some ways and i'm trying to solidify it. The guy did put mechanical linkage in it and everything seems very similar to my 80. Everything seems to be there, except for springs but that's expected judging by other things: the return spring on the clutch housing was entirely gone, mainly due to the main upper portion of the housing, including the top spring mount was hacked off. Making the pedals sit on a large bolt with about 2 dozen washers to space it. You could grap the clutch pedal and shake the thing practically to Canada and back. So i got an actually GM clutch/brake housing from a '78 and installed it, with the missing spring. Hooked up all the linkage and put in a custom/temporary undercarriage spring and the clutch feels like a clutch and does what it is supposed to do. Although, as i said it needs adjusted BAD. i had to slip it SOOOOOOOO hard just to move it 100 yards. Slowly but surely. Next main thing is adjusting it, not entirely sure as to how to do that yet.

Pictures are truck when i got it and then followed by a few from the housing swap

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[AyWoSch Motors]

Woah woah woah, wait a minute... I see the piece your missing in the picture.
Unless I'm missing something here, which is very possible, haha.

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That's the big spring you need, unless this whole time I misunderstood what spring you meant.

 

[AuroraGirl]

Well I’m not sure if cucv ever came with manuals I thought they came with th400 and np208 as their only combos unless they had a need for a pto but im not sure why that meant no np208 but meh. (Pretty sure it has pto ports?) maybe I’m remembering wrong snd the np205 has em


Anyway I would think they wouldn’t have a grant provision for a manual since the pivot is there as you know. But I think you would need a k30 or a c30 manual sfuff since they have a bigger frame set .. narrower? And does the drive train sit flat with the bottom rail and not drop down on the cross member?

if so your hardware is gonna not match(aren’t all military squares 1.25 ton)


I think

 

[Powerhouse Ranch]

Well I’m not sure if cucv ever came with manuals I thought they came with th400 and np208 as their only combos unless they had a need for a pto but im not sure why that meant no np208 but meh. (Pretty sure it has pto ports?) maybe I’m remembering wrong snd the np205 has em


Anyway I would think they wouldn’t have a grant provision for a manual since the pivot is there as you know. But I think you would need a k30 or a c30 manual sfuff since they have a bigger frame set .. narrower? And does the drive train sit flat with the bottom rail and not drop down on the cross member?

if so your hardware is gonna not match(aren’t all military squares 1.25 ton)


I think

well i don't think it was an official military truck to begin with, was a second thought. clearly the m1009 cucv were Chevy Blazers, all through mid to late '80s. They ran 6.2 diesels. My truck is an '88 Jimmy with a 350 sbc. it had aftermarket heavy duty step bumper put on, and everything repainted tan again. and i mean everything, before the yellow. not to mention the cucv diesel dash pad put in, says custom deluxe on the dash emblem and had the spot for the glow plug (hey, the truck's dash is junk, lets grab it out of another cucv on base) is what i'm figuring happened. not to mention it has Department of Defense stickers on the windshield still. So its like they bought it off of someone and used it for basic stuff, IF i had to assume.

Basic 1/2 ton Jimmy setup, gas engine. Nothing fancy like a 1.25 6.2 cucv diesel as mentioned, but good thinking @AuroraGirl

 

[Powerhouse Ranch]

Woah woah woah, wait a minute... I see the piece your missing in the picture.
Unless I'm missing something here, which is very possible, haha.

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That's the big spring you need, unless this whole time I misunderstood what spring you meant.

haha you're good. that spring was missing entirely when i started. when i got the housing from the '78, it came with all the hardware and springs for the in-cab stuff. pictured are the in-cab springs when i painted them up. All of that is in and working. Right now i'm missing the smaller springs that go from the clutch fork to frame. 2 i believe

 

[AyWoSch Motors]

haha you're good. that spring was missing entirely when i started. when i got the housing from the '78, it came with all the hardware and springs for the in-cab stuff. pictured are the in-cab springs when i painted them up. All of that is in and working. Right now i'm missing the smaller springs that go from the clutch fork to frame. 2 i believe

Oooo, okay. I see now.
I remembered you saying you needed the big one. My bad
I might have the little spring. I have a 283 that I pulled out of my Willy's. It had a jeep trans, but a stock chevy bell housing. I might have the little springs somewhere. I'll look when I get home.

 

[AyWoSch Motors]

well i don't think it was an official military truck to begin with, was a second thought. clearly the m1009 cucv were Chevy Blazers, all through mid to late '80s. They ran 6.2 diesels. My truck is an '88 Jimmy with a 350 sbc. it had aftermarket heavy duty step bumper put on, and everything repainted tan again. and i mean everything, before the yellow. not to mention the cucv diesel dash pad put in, says custom deluxe on the dash emblem and had the spot for the glow plug (hey, the truck's dash is junk, lets grab it out of another cucv on base) is what i'm figuring happened. not to mention it has Department of Defense stickers on the windshield still. So its like they bought it off of someone and used it for basic stuff, IF i had to assume.

Basic 1/2 ton Jimmy setup, gas engine. Nothing fancy like a 1.25 6.2 cucv diesel as mentioned, but good thinking @AuroraGirl

I have a CUCV, a 1984 M1009 Blazer.
Mine originally came from a base in California, but went to my local Nat. Guard base before being sold at auction.
Stands for Commercial Utility Cargo Vehicle.
The M1009 was the Blazer, but it really wasn't a "K5" anymore, because they beefed up the springs and other components, so it's really a K10 blazer. The M1008 and M1028, are single rear wheel K30s (one with bed, one chassis model) also beefed up to 5 quarter ton status. The M1031 are dually K30s.
All came stock with the 378ci - 6.2 J-code Detroit Diesel, a TH400 transmission, and NP205 transfer case. No manuals.
They were made from I believe late 83 to 87 when they stopped production of squares. Chevy then started making the CUCV 2 from 88 to 98, which was based on the next gen chevy truck. Didnt have the blazer back until 92 when they came out. Had the same driveline as previous CUCVs until 95 when Chevy dropped the 6.2 and upgraded to the 6.5 duramax Turbo diesel.
Before 83, they used dodge W200/W300 called M880 and M890s, that had a mopar 318 and 727 auto.
In 88, they also started production of the first M998 HMMWV (aka Humvee), which had the same 6.2/TH400/NP205 driveline. In 95 they also got the upgrade, and got the 6.5 turbo diesel and Allison trans.
But bases everywhere would buy civilian vehicles as take home trucks and run around for army reserves and big wigs.
Your Jimmy was probably bought because of the need for the K5 size truck, and because the guys in the Motorpool were familiar with squarebodys and had plenty of parts trucks.
Just showing off my bit of trivia I know about CUCVs and other Military trucks, sorry.
Don't ask about military Willys, we'll be here all day, lol.

 

[Powerhouse Ranch]

Oooo, okay. I see now.
I remembered you saying you needed the big one. My bad
I might have the little spring. I have a 283 that I pulled out of my Willy's. It had a jeep trans, but a stock chevy bell housing. I might have the little springs somewhere. I'll look when I get home.

much appreciated! yeah before i was looking for the big spring but problem was resolved when it came with the entire housing. totally worth the purchase 100%

 

[AyWoSch Motors]

much appreciated! yeah before i was looking for the big spring but problem was resolved when it came with the entire housing. totally worth the purchase 100%

Awesome, good find!! Glad you found it, that would've been a nightmare to find.

 

[AuroraGirl]

Oooo, okay. I see now.
I remembered you saying you needed the big one. My bad
I might have the little spring. I have a 283 that I pulled out of my Willy's. It had a jeep trans, but a stock chevy bell housing. I might have the little springs somewhere. I'll look when I get home.

I can do one better yet less helpful, I can guarantee I have at least a few of those springs, maybe 10s, and no shortage of other springs too.
But I have no idea what color or application because my grandpa organized em by vehicle springs, machine springs not manual trans vs throttle returns

 

[AuroraGirl]

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