Technical 348 Stock Exhaust Manifold Bolts?

Can anyone advise where I can get an exhaust manifold bolt set..... or the sizes of the bolts? Are they the same a small block manifold?
Thanks in advance.

Allan

 

https://show-cars.com/

One stop shop for all 348/409 related parts

 

Do notice that some of the exhaust manifold bolts go into water passage and will need sealer.

 

Thanks for the comments.
I didn’t know about the water passage sealing!
Unfortunately it looks like Show Cars sells individual bolts, not as a set.

 

If you give me a little time I could get some measurements.

 

That would be awesome! Thanks.

 

Check the depth of the hole and add 5/8 to 7/8" and buy grade 8 bolts at Ace. I personally like a hardened washer behind each and normally uy the ARP's thru Summit.

 

You might also toss the question to the folks at 348-409.com. Good bunch over there.

 

I always use anti-seized on the bolt threats. I was replacing the starter on a 348 58 Chevy and removed the right side exhaust manifold. When I was bolting everything back together a wire coming from the starter fell between the head exhaust port and the exhaust manifold. I did not see it and when I tighten the manifold bolts, the manifold crack into two pieces.

 

3/8 x 2 1/2 two per side
3/8 x 1 1/2 five per side

 

Thanks!!