C1 Exhaust Manifold

[John C.]

In the process of restoring exhaust manifolds on early 61 270.
Left #'s are correct Right side ??
Right reads
3750556A
RH 2 SCC GM 6-9-83
In reasearch in corvette by the numbers 3750556 is correct
but nothing about the A or 2 SCC GM 6-9-83
Can someone enlighten me.
Thanks
John

[Mike M.]

Re: C1 Exhaust Manifold

i'll bet there are no casting mold seperation nubs/protrusions along the top of the manifold, making it a service replacement manifold from the 80's. mike

[John C.]

Re: C1 Exhaust Manifold

Mike

Looking at the side where the numbers are located.
There are two flat circles one on each end (right exhaust manifold).
(left exhaust manifold) Looks like a nipple on each end,
# 3749965 is correct but??? on date LH 21 GM.
Thanks for the info
John