C1 intake manifold holes

[Don Izzo]

I have the 3746729 intake manifold on my 60. Can someone please tell me what was used to close the two holes (5/16 thread?) found in the top side of the intake manifold, located towards the rear behind the carb. I think that passenger cars used these two holes to mount the coil bracket. They go all the way through the intake to the lifter valley. What does the 60 vette do with them? I suppose there are two bolts that plug them? Thanks for all the help, you guys are great!

Don

[Don Izzo]

3746829 manifold *NM *NM*

[Mike E.]

Re: C1 intake manifold holes

Two bolts--flanged dished hex head.

[Don Izzo]

Thanks Mike! *NM*

[John M.]

Re: Thanks Mike!

"NYLOC" head mark if memory serves me right. I believe that you will find this is an item that judges will look for.

Regards, John McGraw