C2 SBC Exhaust Man.

[Loren L.]

Are these the correct measurements for the "washer/spacer" used under the exhaust manifold attaching bolts: 1/2" ID "hole"; 3/4" OD;
and 1/4" thick? Anybody with a part #?

[Tracy C.]

Re: C2 SBC Exhaust Man.

Loren,

Here is a link to a recent thread covering your question.. Scroll to the last few posts for size.

tc

https://www.forums.ncrs.org/showthread.php?t=86104&highlight=exhaust+manifold+spacer&uid=4880

[Alan D.]

Re: C2 SBC Exhaust Man.

Gr 3.613 pn 3754153 3/8 ID 3/4 OD 1/8 thick
These are only on the outside studs not the inner two, mistake exists in 64AIM (shows both ways) If you have a 67 then some more changes may be possible (you need to ask specifically about 67 as recall)
OK see Tracy references. Just measured two originals 9/64 thick, 27/64 ID, 11/16 OD