What Size Tailpipes

Pech33

Pech33

Senior Member
I put Red's Headers on my 40 Convertible, Smithy Mufflers with 2" inlets and outlets. Do I go with 2" exhaust pipes or 1 3/4"?
 
Straight pipes are where it's at. Even smaller diameters are fine and help tame the bark too. 8^)
 
If you are using Smithy's then then you will have to use adapters and extra clamps for 1 3/4" T-pipes. Go with the 2" (no big difference in sound)
 
Why would anyone install less restrictive headers and then install more restrictive tailpipes?
 
Before Burbank went Stop Sign Crazy there was a steep hill that was locally used to test performance. We made up our own rules to suit the car. It is a real-world test or was. We then enjoyed a glimpse into the performance mythology that clouded the Hot Rod Minds of the era. JWL blew the doors off of so many lies and damn lies. Fred A
 
36rgtop said:
Ya' probably just as hilarious as installing Reds headers or any other aftermarket headers along with the mufflers.
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Well, yes, I agree. 99% of the time, it's for appearance and sound. Certainly not enhanced performance.
 
In JWL's Book "Flathead facts" He has allot to say about the flathead exhaust and any modifications you might want to make to it and the results. Great information.
Gramps
 
Dual 1.75 will give you a nice crackle without that 2" overkill drone sound. Won't worry about getting more flow for "performance".
 
I managed to fabricate this 2.5” stainless single system into my frame. Sounds really good with my little 35 engine. I chose a single system so I can keep my battery under the floor. I also fabricated the headers in ss.
 

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My Smithies only lasted a few years but did have a nice mellow sound. Brock mans have been on much longer and still seem very solid
 
Ken Henry said:
My Smithies only lasted a few years but did have a nice mellow sound. Brock mans have been on much longer and still seem very solid
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I went with Brockmans and 1 3/4 pipes. Stock type dual manifolds………. Mark
It takes up less room in the garage when I park it like this !!
 

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the original tail pipe was 11/2" single so 2 x 1 3/4" flows a lot more what a lot of people forget is heat heat greatly effects volume so the further you get away from the engine the less pipe you need so unless youve got an absolute monster or a flathead i dont think its going to have much of an effect
 
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