I hadn't seen a 'lower' intake manifold on a 235/261 as mentioned in an earlier post, then coincidentally stumbled across one this morning in '56 with a 235. Here is a picture--

http://s844.photobucket.com/user/ma...20manifold/IMG_1953_zpslwrfrxzj.jpg.html

For comparison, here is a picture of a 'normal' one--

http://s844.photobucket.com/user/ma...vbedwdq.jpg.html?state=copy&sp=false

The lower one has a height of about 3" from where it joins the exhaust manifold to the base of the carb studs compared to 4" on the other one. The threaded bung for the vacuum connection is angled about 30 degrees toward the rear on the lower one compared to straight out on the other one.

Matt

Last edited by Maybellene; 06/23/2016 8:30 PM.