Slant Six Forum :: Manifold stud nuts - correct end ones found!

I'm really digging the studs myself.

Iâ€™m getting ready to order studs and nuts for manifold swap here soon.
Are these the correct parts I should order?
1 package of 99638A300 and 13 of the 94358A270 studs.
What else should I order that should be replaced? (Part numbers please)
Also I want to replace the 3 intake to exhaust manifold bolts does anyone have specs on these?

Thanks

Dave

Another source for the studs is Dorman part number 675-093. This is a 10 pack, so it comes up 3 short. I've also noticed a lot of auto parts stores seem to be perplexed by that part number.

Now, if only we could find repro triangle-cone washers...

I got some somewhere in 316 stainless steel, bought a whole box of em, I think there were 10 per box.

I think I got both 4 and 4-1/2" versions to be sure I had plenty of thread left on the bottom to attach the heat stove, my throttle bracket, and a 2nd nut below them. Maybe it was 3-1/2 and 4" I bought, would have to go look.

Mine are full threaded, I think they might have come from mc master -carr as well. If not there they were from Fastenal.

Author:	Reed [ Mon May 14, 2012 5:10 pm ]
Post subject:
There should be a "engine hardware" sticky that lists the McMaster and/or Dorman part numbers for all the hard to find greebly bits (like manifold stud hardware) on our slants.

Author:	olafla [ Thu May 17, 2012 1:55 am ]
Post subject:
Maybe added here? http://www.slantsix.org/parts/sl6-parts.htm Olaf

Author:	67 Dodge Coronet 440 [ Thu Aug 09, 2012 6:30 pm ]
Post subject:	3 bolts for manifold to exhaust thanks Dan.!!!
WOW..this guys an awsome parts finder,a portable slant 6 dictionary.but, hey All of you are!!.lots of knowledge here.but,"if theres somthing you dont understand,ask Dan the Man.he,s bound to have a plan".!!.im a poet and didnt even know it.ha,ha,thanks all and God Bless, Bear R.-

Author:	MadScientistMatt [ Fri Jun 21, 2019 11:32 am ]
Post subject:	Re: Manifold stud nuts - correct end ones found!
Another source for the studs is Dorman part number 675-093. This is a 10 pack, so it comes up 3 short. I've also noticed a lot of auto parts stores seem to be perplexed by that part number. Now, if only we could find repro triangle-cone washers...

Author:	Rick Covalt [ Sat Jun 22, 2019 1:41 pm ]
Post subject:	Re: Manifold stud nuts - correct end ones found!
Quote: I'm really digging the studs myself. Me too, but that $5 price tag is a little ouchy!

Slant Six Forum https://slantsix.org/forum/

Manifold stud nuts - correct end ones found! https://slantsix.org/forum/viewtopic.php?t=48622	Page 2 of 2

Author:	jcapdvs [ Sat Oct 08, 2022 12:06 pm ]
Post subject:	Re:
Quote: Iâ€™m getting ready to order studs and nuts for manifold swap here soon. Are these the correct parts I should order? 1 package of 99638A300 and 13 of the 94358A270 studs. What else should I order that should be replaced? (Part numbers please) Also I want to replace the 3 intake to exhaust manifold bolts does anyone have specs on these? Thanks Dave I'm also looking for advice on the intake to exhaust manifold bolts - I used a cheap steel the last time (with a bunch of anti-seize) because I couldn't find full thread grade 8. When I removed the manifolds recently one of the bolts twisted apart (luckily in the middle so I could remove it with pliers instead of a drill!). A 3.5" grade 8 has enough thread to tie the manifolds together, but none left over for the wiring bracket which mounts underneath the exhaust manifold. Ideas?

Author:	volaredon [ Sat Oct 08, 2022 1:47 pm ]
Post subject:	Re: Manifold stud nuts - correct end ones found!
I got some somewhere in 316 stainless steel, bought a whole box of em, I think there were 10 per box. I think I got both 4 and 4-1/2" versions to be sure I had plenty of thread left on the bottom to attach the heat stove, my throttle bracket, and a 2nd nut below them. Maybe it was 3-1/2 and 4" I bought, would have to go look. Mine are full threaded, I think they might have come from mc master -carr as well. If not there they were from Fastenal.

Author:	jcapdvs [ Sat Oct 08, 2022 2:04 pm ]
Post subject:	Re: Manifold stud nuts - correct end ones found!
Quote: Another source for the studs is Dorman part number 675-093. This is a 10 pack, so it comes up 3 short. I've also noticed a lot of auto parts stores seem to be perplexed by that part number. Now, if only we could find repro triangle-cone washers... Found a guy on EBAY who reproduces triangle washers: https://www.ebay.com/itm/334354254901 They work fine so far, though he sells them in packages with the round dome washers as well - it's a kit to do the whole engine. I only needed one washer, so now I have a bunch of extras!

Author:	jcapdvs [ Sat Oct 08, 2022 3:11 pm ]
Post subject:	Re: Manifold stud nuts - correct end ones found!
Quote: I got some somewhere in 316 stainless steel, bought a whole box of em, I think there were 10 per box. I think I got both 4 and 4-1/2" versions to be sure I had plenty of thread left on the bottom to attach the heat stove, my throttle bracket, and a 2nd nut below them. Maybe it was 3-1/2 and 4" I bought, would have to go look. Mine are full threaded, I think they might have come from mc master -carr as well. If not there they were from Fastenal. Thanks! I picked some up - 4" looks like it will fit the bracket with enough room for the nut, 4.5" would give me a little breathing room and let me use a lock washer. All my hardware store had on hand was 4" and 5", so I'm gonna have a bunch of extra thread sticking out - good thing there's plenty of room in the engine compartment! EDITED: the 4" works great, even with a lock washer!

Author:	K&Sons [ Mon Oct 10, 2022 12:09 pm ]
Post subject:	Re: Manifold stud nuts - correct end ones found!
Hello All, A little tip for the Canadian members of this forum. McMaster-Carr does not ship to Canada. However, all is not lost, I found that a Stover Nut is a good substitute. A Stover Nut has a conical end that has been pinched in three places to distort the threads to pinch the stud or bolts threads (see link below). Like the McMaster-Carr fastener, these are a reusable. https://bcfasteners.com/shop/stover-lock-nut-zinc-nf/ On my engine, the previous 'backyard mechanic' threw out the factory nuts and then used standard nuts on reversed manifold washers!!! Go figure? Always makes me wonder why?? Needless to say that this was the root cause of the cracked exhaust manifold when I acquired the vehicle. With the Stover Nut I reversed the nut on the stud so the conical end would engage the recess in the factory manifold nuts. So far this appears to work as well as the manifold leak free. I update this thread if anything changes. For you Canucks out there, I found my Stover Nuts (5/16 x 24 IIRC), at Home Hardware. Hope it helps. Thank you and take care,

Author:	Greg Ondayko [ Wed Apr 12, 2023 7:26 pm ]
Post subject:	Re: Manifold stud nuts - correct end ones found!
Seems that the original McMaster-Carr links no longer take you to specific hardware... just to the mcm-c page..

Author:	and739 [ Thu Apr 13, 2023 5:02 am ]
Post subject:	Re: Manifold stud nuts - correct end ones found!
https://www.mcmaster.com/product/94820A240 Plain https://www.mcmaster.com/product/99638A300 Fancy These are the ones from the original post according to the part numbers in the now misdirected links.

Author:	Greg Ondayko [ Thu Apr 13, 2023 5:36 am ]
Post subject:	Re: Manifold stud nuts - correct end ones found!
Nice, Thank you sir!

Author:	SlantSixDan [ Thu Apr 13, 2023 3:10 pm ]
Post subject:	Re: Manifold stud nuts - correct end ones found!
Links updated in original post now; thanks.

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