I've been searching the posts and haven't found anything on this so, hopefully it's not been answered already. My 77 F100 has a nasty tendency to just up and die when slowing down for corners and such, but only on mildly cool, humid days (usually around 40 degrees, especially in fog). I'm no mechanic but the guy who works on my truck is and he said I needed to find and install an exhaust manifold shroud and connect a pre-heater hose to the air cleaner housing. I've got the hose and see where remnants of the shroud used to be connected but cannot find a shroud anywhere. I've done a "Google" search, which is how I ended up here, check JC Whitney, NAPA, and Motrohaven... NUTTIN'

Any body know where I can round one of these bad boys up?

Thanks in advance,
Don

 

The one for mine bolts to the exhaust manifold and I've only found them at the junk yards for about $10. There's really nothing to them, just a metal piece that collects hot air, but the dealer might have one too.

 

Hi,

I have looked all over for the same part, with no luck. I finally ended up ordering one for a 351W and cutting it to make fit.

My truck runs much better with it installed.

-Brents

 

77,
What does this thing accomplish? Is your motor running too cold? How does shrouding an exhaust manifold prevent stall? Is this shroud part of the choke assembly?
Curious KingFisher

 

Like said its just a simple piece of sheet metal that wraps the exhaust manifold from the front to middle. If you look at your manifold you should see a taped hole midpoint of this distance, that is for attaching it. Also attached to it is a hose that connects the shroud to the fresh air inlet on the air cleaner. So in a nutshell it provides warm air to the carb. This was ecspecially helpful to me to prevent carb iceing. I never knew they existed untill I found one at the bone yard. I've seen them on E150's as well.

 

Thanks the posts, y'all. I'll keep checkin' the boneyards. I haven't found one in any of the aftermarket stores or the dealers.

We've had such a mild fall with lots of misty, foggy weather so my poor ol' truck stalls out from carb iceing at nearly every stop unless I keep my foot on the gas pedal. I get a few looks from a few fools who think I'm wanting to race when all I'm trying to do is keep my truck from embarrassing me in public. )