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Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
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| | | | Joined: Mar 2012 Posts: 75 Shop Shark | | Shop Shark Joined: Mar 2012 Posts: 75 | I have a 41 1/2 ton was wondering if intake manifold was semi gloss black or a cast gray originally I have seen both ways
Thanks for any info
Last edited by crash2012; 10/04/2014 6:09 AM.
| | | | | Joined: Nov 2006 Posts: 2,544 Shop Shark | | Shop Shark Joined: Nov 2006 Posts: 2,544 | The intake was painted engine color(dark gray) | | | | | Joined: Oct 2006 Posts: 9,671 'Bolter | | 'Bolter Joined: Oct 2006 Posts: 9,671 | Right On Don! What you're observing Crash, is what someone did to cover up the rust which forms a week after the original factory paint has burned off the exhaust manifold. A PO sprayed some Hi-temp hot rod paint on it. If you want to keep the look of bare, un-rusted cast iron, 'Calyx' works well but has to be reapplied every few months. http://www.eastwood.com/calyx-manifold-coating.htmlHere is an exhaust manifold with about two years use on it that was treated with Calyx but not maintained real well. http://www.pbase.com/dennygraham/image/124991344This was the way it looked right after being treated while mounted up on the engine. http://www.pbase.com/dennygraham/image/114331484dg
Last edited by Denny Graham; 10/04/2014 1:57 PM.
Denny G
Sandwich, IL
| | | | | Joined: Sep 2001 Posts: 29,269 Bubba - Curmudgeon | | Bubba - Curmudgeon Joined: Sep 2001 Posts: 29,269 |
I touch up the Calyx once a year (Spring time post-hibernation activity). Mine lasts all year, as long as I do not get the manifolds wet and then forget to run the engine to dry them off.
| | | | | Joined: Mar 2012 Posts: 75 Shop Shark | | Shop Shark Joined: Mar 2012 Posts: 75 | | | | | | Joined: Oct 2006 Posts: 9,671 'Bolter | | 'Bolter Joined: Oct 2006 Posts: 9,671 | Just re-read this, my mistake, you were asking about the intake,
not the exhaust. Dyslexia is a terrible burden you know.
Sorry,
dg
Denny G
Sandwich, IL
| | | | | Joined: Mar 2012 Posts: 75 Shop Shark | | Shop Shark Joined: Mar 2012 Posts: 75 | No worries Denny I needed info for the exhaust too.
Nice restoration you did on your exhaust manifold very clean work replacing the studs. the studs on mine look pretty rusted in, the threads are good so I don't think I want to try and replace them(I would hate to break one off)
Thanks | | | | | Joined: Oct 2006 Posts: 9,671 'Bolter | | 'Bolter Joined: Oct 2006 Posts: 9,671 | Probably end up breaking the flange if they are to far gone.
That's why I had to build a new flange for the manifold in the
pictures. Apparently someone had tried to remove them
somewhere in the past and broke the flange off.
The new studs I made from SS and used brass nuts on them.
dg
Denny G
Sandwich, IL
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