There is a repop 3885069 manifold available from a few places. This is the manifold:

https://www.ss396.com/part/3885069.html

It's available from a few other places as well. The question is whether the low cut plenum divider is correct. I want to use this on a 427/425HP (L72) as a replacement for the original. which after 57 years has a few stress cracks. It can be fixed, but I need something in the meantime.

I had some concerns the divided plenum isn't ideal, but if this is what the 396 manifold looks like from the factory it will sure work on a 427.

Thanks in advance.

 

It's rectangular port so it should assuming you have the correct heads on your motor.
I ran a twisted Torker on my old 427 like this one with a Holley Double Pumper,great combo but if looking stock for show car maybe not what you need.
https://www.ebay.com/itm/37448557086...Bk9SR_zr67GJYg

 

Thanks for the offer and comments. I had one of those on my '65 Vette, 427 with oval ports and a factory L72 cam. It ran great! I'm trying to keep the appearance as close to factory as I can, so I'd like to fix what I have or replace it with a similar part. It's going on a '66 Vette with a correct L72 427. It has one of those weird 3 hole carb base versions of the intake, but it's the same casting number 3885069 as the repop. I was wondering if a factory 396/375 manifold had the low cut plenum divider like the repop.

That and the ol Torker is a single plane manifold. I don't think any of those have a plenum divider. I can tell you having the carb sit sideways is a bit of a PITA with a rod type throttle mechanism.

 

Just to be clear not my ebay ad just one I pulled up like what I had years ago.

 

Correct and yes but once hooked up they worked great.