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| | | | Joined: Mar 2022 Posts: 117 'Bolter | | 'Bolter Joined: Mar 2022 Posts: 117 | Is there any harm in running it without the exhaust hooked up? I have the stock manifold, unhooked the exhaust to fix a leak fired it up for fun and it sounds awesome, will probably be sick of it once the exhaust gasket comes, but read some stuff about burning valves, and wondered if it was true. I know it'll have less torque, but just for fun.
Also, does anyone have opinions on exhaust cutouts? I'd like to put one as close to the manifold as I can for that sound once in a while. Do the flap ones just end up being leaky?
Last edited by BurningTracks; 10/16/2022 4:26 PM.
1961 Chevy C40 Flatbed 261
| | | | | Joined: Oct 2021 Posts: 6,686 'Bolter | | 'Bolter Joined: Oct 2021 Posts: 6,686 | Attach a steam whistle to the exhaust cutout and really drive folks nuts!
1950 Chevrolet 3100 (Ol' Roy)
1939 Packard Standard Eight Coupe (The Phantom) | 1956 Cadillac Coupe de Ville (The Bismarck) | 1964 Ford Galaxie 500 coupe |1966 Ford Mustang (Little Red) | 1969 Pontiac GTO (The Dishpit) I 1979 Ford F-100 | 1976 Ford F-150 (Big Red) | 1995 Ford F-150 (Newt)
| | | | | Joined: Mar 2022 Posts: 117 'Bolter | | 'Bolter Joined: Mar 2022 Posts: 117 | Jeezus Otto, I'd be a menace with that thing 
1961 Chevy C40 Flatbed 261
| | | | | Joined: Jun 2004 Posts: 8,597 Riding in the Passing Lane | | Riding in the Passing Lane Joined: Jun 2004 Posts: 8,597 | It will not hurt a thing running without an exhaust system. If you had no manifolds at all the Theary was that when you shut the engine off, the cold air would go in & warp the valves. No one has proved that there is any thing to this. Maybe back years ago it might have been true.
George
Last edited by Wrenchbender Ret.; 10/17/2022 2:07 PM.
They say money can't buy happiness. It can buy old Chevy trucks though. Same thing. 1972 Chevy c10 Cheyenne SuperIn the Gallery Forum | | | | | Joined: Mar 2022 Posts: 117 'Bolter | | 'Bolter Joined: Mar 2022 Posts: 117 | 10-4 George, thanks tor the input!
1961 Chevy C40 Flatbed 261
| | | | | Joined: Oct 2021 Posts: 6,686 'Bolter | | 'Bolter Joined: Oct 2021 Posts: 6,686 | Jeezus Otto, I'd be a menace with that thing I have a friend with a 1913 Marmon that has a handle next to the driver's seat. When you pull it up it diverts the exhaust flow to a train whistle. It's loud as hell and cool as $#!+!
1950 Chevrolet 3100 (Ol' Roy)
1939 Packard Standard Eight Coupe (The Phantom) | 1956 Cadillac Coupe de Ville (The Bismarck) | 1964 Ford Galaxie 500 coupe |1966 Ford Mustang (Little Red) | 1969 Pontiac GTO (The Dishpit) I 1979 Ford F-100 | 1976 Ford F-150 (Big Red) | 1995 Ford F-150 (Newt)
| | | | | Joined: Feb 2011 Posts: 1,362 'Bolter | | 'Bolter Joined: Feb 2011 Posts: 1,362 | No manifolds at all?
Too many old stories and wives tails about that subject.
Lets remember the very short exhaust stacks on the old Allison and Merlin equipped aircraft of WW2 days.
A P38 shutting down one of the engines at 30,000 feet where is is very cold, didn't seem to have any problems.
So you are just fine running with no manifold at all, it may make a mess if it is installed in the truck though.
Kicking self for selling off my Taskforce trucks.
Still looking for an LCF or conventional big bolt in decent shape.
As of 10-26-2022, A 55.2 Taskforce long bed now the work begins
| | | | | Joined: Dec 2018 Posts: 2,450 'Bolter | | 'Bolter Joined: Dec 2018 Posts: 2,450 | Burning tracks Don't you remember being at the circle track when the racers came by with no manifolds you could see the red hot exhaust valves ?? Didn't seem to hurt those. | | | | | Joined: Mar 2022 Posts: 117 'Bolter | | 'Bolter Joined: Mar 2022 Posts: 117 | I have the exhaust manifold on, the exhaust pipe is just unhooked. 
1961 Chevy C40 Flatbed 261
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