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73-87chevytrucks.com
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73-87 Chevy _ GMC Trucks
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Engine/Drivetrain
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Clutch size
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Topic: Clutch size (Read 10492 times)
76k104x4
Registered Users
Posts: 116
Clutch size
«
on:
March 06, 2011, 10:13:52 am »
well my throw out bearing just went out and the clutch is wore out so how do i know what size clutch i have 11 or 11 and 7/8 i want to have the new one ready before i pull the old out thanks
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76k104x4
Registered Users
Posts: 116
Re: Clutch size
«
Reply #1 on:
March 07, 2011, 08:49:19 am »
Anybody
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zieg85
Global Moderator
Senior Member
Posts: 7595
Re: Clutch size
«
Reply #2 on:
March 07, 2011, 08:59:22 am »
It could be either one actually. You should be able to take the inspection cover off and do some measuring. A small tape measure to figure out the diameter of the flywheel then measure how far the clutch is from the edge multiply by 2, and subtract...
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Carl
1985 C20 Scottsdale 7.4L 4 speed 3.21
1986 C10 under construction
https://www.facebook.com/groups/248658382003506/
VileZambonie
Global Moderator
Senior Member
Posts: 19181
Re: Clutch size
«
Reply #3 on:
March 07, 2011, 09:44:21 am »
11 7/8" is more common but find a supplier who can have both of them for you so you can match it up.
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, ___
/ _ _ _\_
⌠ŻŻŻŻŻ' [☼===☼]
`()_);-;()_)--o--)_)
74 GMC
,
75 K5
,
84 GMC
,
85 K20
,
86 k20
,
79 K10
76k104x4
Registered Users
Posts: 116
Re: Clutch size
«
Reply #4 on:
March 07, 2011, 12:16:12 pm »
I got the 11 and 7/8 they call it a 12 but i got it now waiting on a clutch fork mine the tabs are broke that hold the throwout bearing
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76k104x4
Registered Users
Posts: 116
Re: Clutch size
«
Reply #5 on:
March 07, 2011, 09:32:21 pm »
got it all together now there is no resistance on the pedal and when depressed it stays on the floor it is a linkage type assembly no slave cylinder or whatever you call it
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Captkaos
OWNER and Administrator
Administrator
Senior Member
Posts: 18462
Re: Clutch size
«
Reply #6 on:
March 09, 2011, 08:06:36 pm »
You put it back together and there is not pressure on the pedal? Is the throwout bearing installed right? Clutch fork in right?
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Chris Lucas
73-87chevytrucks
captkaoscustoms
squarebody
76k104x4
Registered Users
Posts: 116
Re: Clutch size
«
Reply #7 on:
March 09, 2011, 08:59:59 pm »
i got it fixed i had the adjustment rod adjusted all the way in to get it on the clutch fork and hadnt adjusted it right yet that was the problem its back running better than ever now and the pedal is alot easier to push now my old pressure plate had 3 fingers i guess you call em the new one had alot
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Blazin
Blazin new trails!
Senior Member
Posts: 6130
Re: Clutch size
«
Reply #8 on:
March 09, 2011, 10:49:43 pm »
Your old one is known as a borg, and beck style. They are much better than a diaphragm style that you have now.
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Some people are like Slinkies. Not really good for anything, but they still bring a smile to your face when you push them down a flight of stairs
76k104x4
Registered Users
Posts: 116
Re: Clutch size
«
Reply #9 on:
March 09, 2011, 11:03:11 pm »
why are the borg and becks better
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Blazin
Blazin new trails!
Senior Member
Posts: 6130
Re: Clutch size
«
Reply #10 on:
March 10, 2011, 06:05:02 am »
They have more holding pressure. I have seen the fingers in a diaphragm style fail too, one or more get week and not return back to the realeased position all the way. Have also seen one or more of them break off.
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Some people are like Slinkies. Not really good for anything, but they still bring a smile to your face when you push them down a flight of stairs
76k104x4
Registered Users
Posts: 116
Re: Clutch size
«
Reply #11 on:
March 10, 2011, 10:14:17 pm »
well that sucks ill probably have to replace it later anyway since i put in a NAPA clutch set but when i get my 383 built what do yall think i should put in for a clutch also should i convert to hydraulic
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Captkaos
OWNER and Administrator
Administrator
Senior Member
Posts: 18462
Re: Clutch size
«
Reply #12 on:
March 10, 2011, 10:29:28 pm »
I never use anything but diaphram clutches. Just me.
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Chris Lucas
73-87chevytrucks
captkaoscustoms
squarebody
76k104x4
Registered Users
Posts: 116
Re: Clutch size
«
Reply #13 on:
March 10, 2011, 10:46:03 pm »
you ever have problems out of them
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slammed79
Senior Member
Posts: 1367
Thou shalt not drive stock
Re: Clutch size
«
Reply #14 on:
March 11, 2011, 04:22:36 pm »
My 74 went through two of the old style pressure plates in 18 months. Granted the PO prolly rode the clutch like a little old lady but I've got a year on the diaphram clutch now and I'll never go back.
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74 C10 Long bed 350/SM465 Lowered on 20's
Praise the lowered
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73-87 Chevy _ GMC Trucks
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Clutch size