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Old 06-01-2020, 04:54 PM   #21
Kube
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Default Re: Rear exit manifolds for flathead 39 Ford

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Originally Posted by JayChicago View Post
I have a lot to learn. Why to do you scoff at Drakes statement? Doesn't dual exhaust improve delivered horsepower?
On a stock flathead? Methinks a stock can breathe quite well with a stock exhaust system. Dual exhaust on a stock flathead is for appearance...
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Old 06-01-2020, 05:00 PM   #22
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Default Re: Rear exit manifolds for flathead 39 Ford

Since its an 8ba go with EAB heads.
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Old 06-01-2020, 05:02 PM   #23
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Default Re: Rear exit manifolds for flathead 39 Ford

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Cubic inches, which if the heads remain the same, brings added compression ration as well.
I bet a turbo or super charge would be the SINGLE best way. A modern part not a back in the day part.

Chris
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Old 06-01-2020, 06:09 PM   #24
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Default Re: Rear exit manifolds for flathead 39 Ford

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Since its an 8ba go with EAB heads.
Is it an 8BA?....does a Ď39 exhaust cross over the front like one?...I bought a left manifold from Drake and a right from Shoebox-Central. But itís a Ď51 with an 8BA. I agree with the dual exhaust is for looks and sound.....and annoying the neighbors when I leave for work in the morning!!!.....Mark
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Old 06-01-2020, 07:10 PM   #25
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Default Re: Rear exit manifolds for flathead 39 Ford

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I wonder if back in the day the muffler was a restriction so the police manifold would give you 2 mufflers on the car. Police needed to be quiet. Seems like it would be a lot of engineering, must have made a bit of difference.



Plus the Ford police package included the 255 cu. in. Mercury engine so maybe the factory engineers figured the stock Ford single exhaust was somewhat restrictive.
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Old 06-01-2020, 08:02 PM   #26
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Default Re: Rear exit manifolds for flathead 39 Ford

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I bet a turbo or super charge would be the SINGLE best way. A modern part not a back in the day part.

Chris



Chris that would be the single best way however economy may suffer a bit.
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Old 06-01-2020, 08:09 PM   #27
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Default Re: Rear exit manifolds for flathead 39 Ford

Kube, yes but duals with glasspacks or even straight pipes sound better!!
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Old 06-01-2020, 08:45 PM   #28
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Default Re: Rear exit manifolds for flathead 39 Ford

here are one i found on Ebay.....

https://www.ebay.com/itm/1932-1936-F...-/402056410662
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Old 06-01-2020, 09:10 PM   #29
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Default Re: Rear exit manifolds for flathead 39 Ford

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Thanks! That looks pretty good!
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Old 06-01-2020, 09:30 PM   #30
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Default Re: Rear exit manifolds for flathead 39 Ford

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Originally Posted by Chris_AAFord View Post
I bet a turbo or super charge would be the SINGLE best way. A modern part not a back in the day part.

Chris
Not available back in the day?
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Old 06-01-2020, 09:38 PM   #31
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Default Re: Rear exit manifolds for flathead 39 Ford

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Thanks! That looks pretty good!
Aren't you looking for a rear exit manifold?
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Old 06-01-2020, 11:43 PM   #32
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Default Re: Rear exit manifolds for flathead 39 Ford

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C'mon guys! Let's be sure of what we're suggesting that folks should purchase. That eBay unit is a "FRONT" exit manifold for a CROSSOVER pipe! DD
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Old 06-02-2020, 05:41 AM   #33
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Default Re: Rear exit manifolds for flathead 39 Ford

Belond equal flow headers. 40% power gain. Always wanted a set. ???????????
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Old 06-02-2020, 05:53 AM   #34
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Default Re: Rear exit manifolds for flathead 39 Ford

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Aren't you looking for a rear exit manifold?
Thanks good catch!
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Old 06-02-2020, 06:17 AM   #35
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Default Re: Rear exit manifolds for flathead 39 Ford

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Hi Fordbarn,

Does anyone know of a good exhaust manifold that’s a rear exit that will fit a 39 ford standard? My current manifold dumps in front of the steering box and I’m looking for something that will be easier to run a dual exhaust.

Thanks,
Chris
I have an original Douglas "police" left side manifold used on the '51 and later flatheads. If you can use it, PM me.
Ken
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Old 06-02-2020, 07:39 AM   #36
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Default Re: Rear exit manifolds for flathead 39 Ford

I have Red's headers in my 39 standard with Brockman mellowtone mufflers.
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Old 06-02-2020, 08:28 AM   #37
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Default Re: Rear exit manifolds for flathead 39 Ford

Would be interesting if we could see a episode of engine masters do a flathead buildup. Maybe we need to start harassing Freiburger.
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Old 06-02-2020, 09:30 AM   #38
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Default Re: Rear exit manifolds for flathead 39 Ford

Have a look at the French flathead exhaust manifolds. Exit high up and to the rear. https://www.35pickup.com/FrenchFlathead.html
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Old 06-02-2020, 09:44 AM   #39
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Default Re: Rear exit manifolds for flathead 39 Ford

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Originally Posted by Ol' Ron View Post
Belond equal flow headers. 40% power gain. Always wanted a set. ???????????
Belond must have had a much better catalog than J.C. Whitney.

With a 40% increase? I would too.!
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Old 06-02-2020, 06:21 PM   #40
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Default Re: Rear exit manifolds for flathead 39 Ford

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Originally Posted by Chris_AAFord View Post
Would be interesting if we could see a episode of engine masters do a flathead buildup. Maybe we need to start harassing Freiburger.

That would be interesting! Open it up to all flathead engines used in automobiles from, say 1920 to 1954. OEM blocks, cranks and heads only. Otherwise, anything goes! Use the Engine Masters scoring system to give a level playing field to determine the winner. Maybe go by horsepower per cubic inch.
Next, which would be overall horsepower king? 308 Hudson? 346 Cadillac? 359 Packard straight 8? Or a 448 Lincoln V12?
Let the games begin!
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