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Old 06-03-2019, 08:57 PM   #1
63longfleet
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Clutch pivot bolt hole size

Do any of you motor gurus know what size bolt fits in the side of the block where the clutch pivot originally went. I'm trying to make a bracket to keep my plug wires away from the headers. Thanks in advance.
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Old 06-03-2019, 09:03 PM   #2
mongocanfly
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Re: Clutch pivot bolt hole size

Assuming your talking smallblock, its ◊◊◊◊◊...correction::::1/2-13
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Old 06-03-2019, 09:11 PM   #3
63longfleet
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Re: Clutch pivot bolt hole size

Thanks Mongo
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Old 06-04-2019, 06:54 PM   #4
crazy longhorn
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Re: Clutch pivot bolt hole size

If it screws into the block....it is 1/2 13 on the threads Longhorn
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Old 06-04-2019, 08:34 PM   #5
mongocanfly
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Re: Clutch pivot bolt hole size

that's what I get for checking it in the dark with no light...I must've screwed a 3/8 bolt in wrong hole ill have to look in the daylight
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1981 C30 LQ9 NV4500..http://67-72chevytrucks.com/vboard/s...d.php?t=753598
Mongos AD- LS3 TR6060...http://67-72chevytrucks.com/vboard/s...34#post8522334
Columbus..the 1957 IH 4x4...http://67-72chevytrucks.com/vboard/s...63#post8082563
2013 GMC Z71..daily driver
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Old 06-04-2019, 08:49 PM   #6
crazy longhorn
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Re: Clutch pivot bolt hole size

Mongo, the other end , on the frame, is what you stated 3/8 16 thread We all get together to share ideas.....keep on truckin Bro, & share the info longhorn
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Old 06-04-2019, 09:16 PM   #7
mongocanfly
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Re: Clutch pivot bolt hole size

naw. i went out there in the dark last night with a 3/8 bolt ( i think) and had to feel around on the block out in the back shed....the hole im talking about is in the block above the oil filter but its a 3/8 (again i think).either that or i picked up a 1/2" bolt in the dark.
ill have to look in the morning and see where i screwed it in....been a long time since ive messed with one mounted to the block
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1981 C30 LQ9 NV4500..http://67-72chevytrucks.com/vboard/s...d.php?t=753598
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Columbus..the 1957 IH 4x4...http://67-72chevytrucks.com/vboard/s...63#post8082563
2013 GMC Z71..daily driver

Last edited by mongocanfly; 06-04-2019 at 09:24 PM.
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Old 06-05-2019, 07:40 AM   #8
mongocanfly
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Re: Clutch pivot bolt hole size

You wuz right CL...1/2-13...that hole had a dirt dawber nest in it...amazingly the 3/8 bolt threaded it's thru the nest in there and wuz somewhat tight..till I cleaned the hole out
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1981 C30 LQ9 NV4500..http://67-72chevytrucks.com/vboard/s...d.php?t=753598
Mongos AD- LS3 TR6060...http://67-72chevytrucks.com/vboard/s...34#post8522334
Columbus..the 1957 IH 4x4...http://67-72chevytrucks.com/vboard/s...63#post8082563
2013 GMC Z71..daily driver
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Old 06-05-2019, 08:24 AM   #9
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Re: Clutch pivot bolt hole size

One thing I’ve quickly learned on this forum is never doubt the wisdom of the great Mr. Shorthorn!
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Old 06-05-2019, 07:58 PM   #10
crazy longhorn
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Re: Clutch pivot bolt hole size

Quote:
Originally Posted by mongocanfly View Post
You wuz right CL...1/2-13...that hole had a dirt dawber nest in it...amazingly the 3/8 bolt threaded it's thru the nest in there and wuz somewhat tight..till I cleaned the hole out
I hate them dirt dawbers...Longhorn!
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Old 06-05-2019, 08:04 PM   #11
crazy longhorn
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Re: Clutch pivot bolt hole size

Quote:
Originally Posted by geezer#99 View Post
One thing Iíve quickly learned on this forum is never doubt the wisdom of the great Mr. Shorthorn!
Just dont ask me what I had for dinner last night.....I could not remember! Must be part timers longhorn
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