Rear exit manifolds for flathead 39 Ford

[Kube]

Originally Posted by JayChicago

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...

[51504bat]

Since its an 8ba go with EAB heads.

[Chris_AAFord]

Originally Posted by drolston

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

[flatford8]

Originally Posted by 51504bat

Since its an 8ba go with EAB heads.

Is it an 8BA?....does a ‘39 exhaust cross over the front like one?...I bought a left manifold from Drake and a right from Shoebox-Central. But it’s a ‘51 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

[40 Deluxe]

Originally Posted by 5851a

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.

[Ronnieroadster]

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Originally Posted by Chris_AAFord

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.

[alanwoodieman]

Kube, yes but duals with glasspacks or even straight pipes sound better!!

[donald1950]

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

https://www.ebay.com/itm/1932-1936-F...-/402056410662

[Chris_AAFord]

Originally Posted by donald1950

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

https://www.ebay.com/itm/1932-1936-F...-/402056410662

Thanks! That looks pretty good!

[RalphM]

Originally Posted by Chris_AAFord

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?

[tubman]

Originally Posted by Chris_AAFord

Thanks! That looks pretty good!

Aren't you looking for a rear exit manifold?

[V8COOPMAN]

Originally Posted by donald1950

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

https://www.ebay.com/itm/1932-1936-F...-/402056410662

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

[Ol' Ron]

Belond equal flow headers. 40% power gain. Always wanted a set. ???????????

[Chris_AAFord]

Originally Posted by tubman

Aren't you looking for a rear exit manifold?

Thanks good catch!

[KGS]

Originally Posted by Chris_AAFord

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

[Planojc]

I have Red's headers in my 39 standard with Brockman mellowtone mufflers.

[Chris_AAFord]

Would be interesting if we could see a episode of engine masters do a flathead buildup. Maybe we need to start harassing Freiburger.

[Gary-UK]

Have a look at the French flathead exhaust manifolds. Exit high up and to the rear. https://www.35pickup.com/FrenchFlathead.html

[tubman]

Originally Posted by Ol' Ron

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.!

[40 Deluxe]

Originally Posted by Chris_AAFord

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!