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EFV-8 Club Forum / General Ford Discussion / headers

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Discussion Topic: headers -- page: 1 2

tpls46ford

07-19-2025 @ 1:21 PM

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Thinking of installing headers on my 1946 Ford Super deluxe convertible. Flathead V8. Have read several articles how the factory exhaust actually contributes to over heating. Mine is constantly overheating. Has anyone installed them on a 46 ford

tom

JayChicago

07-19-2025 @ 2:38 PM

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I have no real experience with this, and others may see this differently. But here's my take on it:

Maybe those articles were talking about the inherent flathead problem with heating, the exhaust travels across the block before exiting into an exhaust pipe? Going to headers won't change that.

And I don't see how headers can make things cooler. I recall reading that someone had a flathead on a dyno and was surprised to find that headers made no performance improvement over stock exhaust pipes.

carcrazy

07-19-2025 @ 2:41 PM

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If you want to install headers on your Flathead Ford V-8, the best and most durable headers you will find are the cast iron headers made by Fenton. One vendor who sells them is Speedway.

https://www.speedwaymotors.com/Fenton-Ford-Flathead-V8-Cast-Iron-Headers-w-Gaskets,1726.html

51504bat

07-19-2025 @ 4:37 PM

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Give Red's Headers a call

https://reds-headers.net/
Address: 62400 Chiriaco Rd, Chiriaco Summit, CA 92201
Phone: (760) 343-2590

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tpls46ford

07-20-2025 @ 7:56 AM

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My main reason for going with headers would be to help the engine run cooler. With the factory restrictive exhaust system and the exhaust pipes under the front of the engine it is always running hot! Hoping for a cooler engine by going with headers

tom

tom

tpls46ford

07-20-2025 @ 7:59 AM

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Have had good experiences with Speedway. That's where I will go.

thanks

tom

51woodie

07-20-2025 @ 8:09 AM

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Tom. I have a stock '46 Super Deluxe Coupe, and have no issues with overheating. I run 180 stats, stock rad, new style pumps and a six blade fan, which I believe is actually a truck fan according to the "Green Bible", and a 4PSI cap. There are a number of items I would look at before changing headers.
Condition of radiator, upper and lower rad shrouds and seals, old vs new style water pumps, thermostats and locations (cocked sideways in hose), ignition timing and carb jetting.

carcrazy

07-20-2025 @ 8:20 AM

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One way to cutdown on under hood heat is to wrap all of the exhaust pipes that are within that space.

Speedway and other vendors offer exhaust wraps to accomplish this.

https://www.speedwaymotors.com/Search?query=exhaust%20wrap

tpls46ford

07-20-2025 @ 1:40 PM

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Have new pumps, new aluminum radiator, new 160 thermostats and a new 6 blade electric fan. My factory top shroud seal does not fit tight up against the new radiator. I'll get that tighter and see what happens. My thought was with the restrictive exhaust if I eliminated that and got the exhaust pipes away from the front of the engine it might run cooler. I also did the test for a bad head gasket. It was not bad. Appreciate your feedback.

thanks
tom

tom

TomO

07-22-2025 @ 1:32 PM

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I have Fenton headers on my car and there was very little difference in the temperature before and after the headers were installed.

Tom

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