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Old 08-28-2017, 01:06 PM   #26
novice
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Re: Clutch linkage picture request

I have the bracket that bolts to the block but it will put the pivot ball directly behind the header pipe. The biggest issue is the header, i think.
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Old 06-05-2018, 08:53 AM   #27
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Re: Clutch linkage picture request

Great photos here, gentlemen. I have a few clarifying questions to add to the discussion, as well as another photo of what I'm looking at on my project. I hope I can learn from you as well.

Quote:
Originally Posted by BILT4ME View Post
I believe the 2WD ball mount on the block is the ball with the plate offset. I used one like that on my 69 custom K10 I built with a 1960 frame.

My son's 70 GMC K20 has the single screw-in ball mounted directly to the block like the OP has shown.

I agree that the Z-Bar the OP has appears to be from a 6 cyl based on the Z-arm locations and orientation.

It DOES look like an easy fix to get the offset ball with plate from a 69-72 2WD V8 and everything should line up.

Don't forget to drill a hole in the clutch fork end so your retaining spring has a place to hook. Normally there is a Vee-shaped anvil that mounts on the end of the clutch rod, but your clutch fork does not work for that.

Good Luck!
So one end of the clutch fork return spring is supposed to grab the fork and one grabs...what...the z bar? Parts are in the mail, I may be asking stupid questions since I can't see a tab on the part in my hand... The diagram posted on page one looks like it has such a tab.

Quote:
Originally Posted by AussieinNC View Post
I would suggest that you dont move the bracket and dont use that threaded hole in the block...

There is a bracket that bolts to the block using that hole and the forward hole, about 4 inches forward on the block.


The bracket is available aftermarket...and someone on here may have one to sell.

If you can wait a few weeks, I will have one for you, as I am going auto with my build, the truck is currently V8 3 on tree, so it has the cross link and all brackets...

Let me know via PM if you want the original one...Thanks
Quote:
Originally Posted by novice View Post
I have the bracket that bolts to the block but it will put the pivot ball directly behind the header pipe. The biggest issue is the header, i think.

Is it advised to not use the hole in the block for a V8 application? Here is what I'm looking at, and it sure looks like it will line up in the block. 71 frame with bracket as it was when I got it. 292 truck, 350 that was set up in a 4 speed '65 C10.


.
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Old 06-05-2018, 09:14 AM   #28
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Re: Clutch linkage picture request

These pictures show some 6 cyl Z bars and a V8 Z bar and bracket on the bottom right also the pivot ball bracket mounted to the Small block engine , The V8 Z bar is longer and the V8 frame mount is noticeably different .
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Old 06-05-2018, 09:21 AM   #29
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Re: Clutch linkage picture request

You say the frame mount is noticeably different; how so? Is it further forward? That would make sense with only one linkage length type, so all V8 applications would need both the mounting plate on the motor AND the V8 frame mount?

Looks like I need both if that is the case! More hard parts hunting ahead...
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Old 06-05-2018, 09:30 AM   #30
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Re: Clutch linkage picture request

Just find a V8 z bar and use the 6 frame mount redrill frame holes to line it up . look at the bottom right of the picture above to see the difference in the frame mounts . Classic has the part .For The block bracket I'd post a WTB (want to buy ) ad in the parts section in here After becoming a subscribing member

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https://www.classicparts.com/1967-72...info/90%2D807/

Last edited by Grumpy old man; 06-05-2018 at 09:37 AM.
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Old 06-05-2018, 09:38 AM   #31
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Re: Clutch linkage picture request

Quote:
Originally Posted by Grumpy old man View Post
Just find a V8 z bar and use the 6 frame mount redrill frame holes to line it up . look at the bottom right of the picture above to see the difference in the frame mounts . Classic has the part .For The block bracket I'd post a WTB (want to buy ) ad in the parts section in here After becoming a subscribing member




https://www.classicparts.com/1967-72...info/90%2D807/
So use the V8 Z bar and relocated 6 cyl frame bracket lined up with the ball stud still in the block, correct?

EDIT: re-read your post, sorry. I see you still said to go grab a block bracket. Makes sense given one length of linkage fits "all"...
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Old 06-05-2018, 09:44 AM   #32
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Re: Clutch linkage picture request

Here is the thread where I bought mine from the parts board .

http://67-72chevytrucks.com/vboard/s...d.php?t=764162
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Old 06-05-2018, 09:55 AM   #33
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Re: Clutch linkage picture request

here is a pic of the V8 pedal to Z bar rod
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Old 06-05-2018, 11:06 PM   #34
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Re: Clutch linkage picture request

I have a plate that bolts to the engine
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Old 04-05-2020, 08:45 AM   #35
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Re: Clutch linkage picture request

Does anyone have the specs or a rough sketch with dimensions for the frame mount bracket? I have to have one fabricated and would really appreciate if someone could share that with me.
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Old 04-05-2020, 03:56 PM   #36
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Re: Clutch linkage picture request

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Originally Posted by 1970ChevC10 View Post
Does anyone have the specs or a rough sketch with dimensions for the frame mount bracket? I have to have one fabricated and would really appreciate if someone could share that with me.
These brackets are available see https://www.ebay.com/p/655930539

GM Part number is 6261879

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Old 12-10-2022, 11:24 AM   #37
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Re: Clutch linkage picture request

I’m converting from a L6 to a 383 V8. The engine is mounted in the L6 location using the six cylinder mounts. Now the 6L Z bar and bracket line up but the bar is too close to the engine to slip over the pivot ball. Should I shorten the Z bar, slip the ball stud inside the tube and then try to thread the ball into the engine block ?
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Old 12-11-2022, 11:55 AM   #38
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Re: Clutch linkage picture request

My small block is in the I6 location and its a mix of parts for the clutch. The upper rod is a the stock I6 (truck was originally a 4 speed) the bell crank is a V8 unit turned 180 to clear the headers, on the block side the ball is just screwed into the block, then the stock linkage back to the original fork. All works nice an smooth.
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Old 12-11-2022, 08:31 PM   #39
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Re: Clutch linkage picture request

You Might have some luck with these guys. I replaced all of my parts last year ordered from them and everything fit as it should, but mine was an R and R application with the exception of the pedal to Z bar link.
I upgraded to the aluminum with Heim joints which is easier, smoother, tighter and quieter.

https://4speedconversions-com.3dcart...k_linkage.html
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Old 12-12-2022, 08:32 PM   #40
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Re: Clutch linkage picture request

Thanks for the advice, photos and link.
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