GMC Motorhome, Look, this intake thing is real!
Mornin, look…….. I had some updating to do on a couple of projects around here but this came up yesterday that I think will make all of you pause who have not addressed this as yet.
Now after I say what it is don’t blow this off and get some coffee…… you now cannot say you didn’t know about this! Here it is, class….. this as tough love or whatever but you must see this:
Our 455 and for that matter as I have seen 403 Olds motors used in a GMC motorhome or a Tornado have an affliction. Naming this nemesis I call it a “cracked intake”. Yeah, a pretty special name but in the case of our Olds “concave” design intake it refers to a crack you will find on about every intake I see. Between the large secondary carb ports is a thin wall of metal separating the 2 big holes. Look hard and you will probably see something like this