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Part number help

7

77crewcab

1/2 ton status
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Lubbock, Texas
I am looking for a part number for the studs for the exhaust manifold. The connection from the exhaust manifold to the exhaust pipe three studs and bolts per manifold. I tried having the parts guy at Autozone search and no luck (typical "Uh its not in the computer") Can anyone help me with this. I have Autozone, Advance Auto, Napa, and O'reilys close by just need a number to have them look up.
 
Their is a stud kit in the Help section . I can't remember the number . Comes with 3 studs and brass looking nuts .
 
Thanks I forgot all aboutthe old nut. The heat is starting to get to me. 97 on an asphalt parking lot under a black truck for about 8hrs per day the past week. :yikes:
 
What year???

MOST chevy small blocks have 3/8" studs,but newer ones might have 10MM metric ones...they come in 2 sizes,one with a "heat riser" used 3" long studs,ones without used 1-1/2" studs..

I never use store bought ones (being poor)so I made some out of long threaded bolts I had and chopped the heads off..I've found no matter WHAT I use for studs or nuts,brass,stainless,or whatever--they NEVER come off after 1 year of our wonderfully corrosive environment around here!..even with tons of "never seize"... :doah: :( ...I use 5/16" nuts and bolts if the stud holes go all the way thru the manifolds now--then all I have to do is cut the bolts next time--no pulling,drilling,and tapping the exhaust manifolds any more!.. :crazy:
 
I just had to get these myself. The HELP! ones is a fix it kit for 1 stud, came with 2 different length studs, 1 spring and 1 nut. And it was $8. And the short one was the wrong length anyway.
My local parts store had them loose in a bin, so I got lucky, the dealer was next. He said he just buys them from the dealer and keeps them, because so many people ask. $12 for 3 studs, springs and nuts. They are all very different depening on emissions, exhaust setup. My right side on the '86 c10 had 1 short, 2 long because of a little emissions actuator mounted there.
They are a BITCH to get out of your manifold too especially when broken. I had to use a welder and a spare nut, placed the nut over the broked stud, welded the piss out of it, waited for it to cool, and finally got it to move.
Thestuds are are 3/8", but they have special threads on them to allow them to thread in, but not back out. The nut is a self locking type too.
 
As an FYI, for later removal, I've had good luck using the really thick brass nuts. Not sure what they are called or what the application is for, but they are maybe 1/2-1" "thick", unlike the standard nuts that are what, maybe 1/4" at best? You can also use two of the "normal" thickness brass nuts to lock each other in place, but the bigger one is just easier.

The brass won't seize to the stud, so you'll never twist the studs off like normally happens.
 
I don't think allthread would be a problem really, except that it seems pretty flimsy. I could be wrong, I've not dealt with it much.


I don't think those have a problem of backing out, I've never had the stud come loose.
 
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