Glowing Exhaust Manifolds 1992 454 TBI 7.4L P30 Motorhome

[Kaweh]

I gather that, but it doesn't mean it isn't causing a restriction. If you run raw fuel through a cat, it will clog up really quick. There are other things that can clog it as well. There could also be a restriction somewhere else.

it's no the catalytic converter. I ran it for a month without the catalytic converter in it. IT is NOT the Cat.

[Nasty-Z]

Put a scan tool on it and watch the O2 readings , I believe I mentioned doing this in an earlier post .

I also questioned the validity of the "90 #/hr" injectors you installed , were these from a reputable source such as Mr. Injector , or parts store specials ?

You need hard data to find the problem , scan tool data , at this point I am lost , both here and on Chevytalk.

TOM