Need help with Exhaust Man #s

[Al 65 Sting]

I finally bead blasted my exhaust manifolds and checked the numbers. They are from 2 different years. One is a casting number 8846559 dated B196 (Feb 19 66), obviously not an original on my 65. The other is 3747088X dated L21 (Dec 2 61 or 71?), again not original on my 65. Can anyone give me some help on what these belong on? I am going to put headers on and want to sell these but want to accurately describe them.

Thanks,
Al

 

[MidShark]

Al


First, I think if you look closer, you are misreading a 3 as an 8 on both manifolds. 3846559 is the left-hand used on 64-67 Corvette 327s from 250 to 350 HP engines. Also was used on 70-71 Corvettes.
3747038 is the RH for 64-65 Corvette 327s w AC. Also 62-68 passenger car 283-327.
I would be interested in the 3846559, as it is the correct date for my 66.

Rich

 

[Al 65 Sting]

Thanks Rich. I will take some pics of both and post them here. Send me email with an offer on the manifold you are interested in.

Thanks,
Al
aldoane@comcast.net