Dual Headers for 1964 Plymouth Valiant slant six

[NachoTr3s]

I have a 1964 Plymouth Valiant with a 225 slant six and was looking for dual headers dual exhaust system. Would headers from a slant 6 truck fit.

 

[Darter6]

They may hang down low. Also I have read that the front tube may hit the steering box.
If you are good with a welder You can make 'um work.

 

[RustyRatRod]

No, they do not fit. AussieSpeed has some. Clifford has some. Then there are the Dutra Duals. AussieSpeed also carries them.

 

[Professor Fate]

Also remember that in order to run true duals on an early A body, the transmission mount/crossmember needs to be modified for clearance of the second set of pipes (the chassis wasn't designed with dual exhaust in mind)- for a fairly low-key street motor I'd seriously consider a big single exhaust. It'll breathe plenty for a warmed up slanty.

 

[RustyRatRod]

Also remember that in order to run true duals on an early A body, the transmission mount/crossmember needs to be modified for clearance of the second set of pipes (the chassis wasn't designed with dual exhaust in mind)- for a fairly low-key street motor I'd seriously consider a big single exhaust. It'll breathe plenty for a warmed up slanty.

They actually respond better to a good single exhaust. Make a 2 into 1 off the headers.

 

[Darter6]

Both above I agree to. Built several Slants using 2 into 1 2 1/2 exhaust. This is a 64 Dart.
In the photo you can see what I was talking about the front pipe and the steering box.

 

[bradmancan]

Both above I agree to. Built several Slants using 2 into 1 2 1/2 exhaust. This is a 64 Dart.
In the photo you can see what I was talking about the front pipe and the steering box.

View attachment 1716332294

View attachment 1716332295

I'm using 6 into 1, 2 1/2 inch exhaust. The muffler itself currently is some aftermarket stock that was on the car when I got it. It's 2" in and out on the muffler. Question: Which muffler do you recomend at the rear for good flow but no drone and not loud? Want my cake and to eat it too! Thanks for any input!

 

[Darter6]

I have used these many times.Not loud nice rumble.Drone depends on the car and engine itself.The Slant photo had a Bullet race muffler no tail pipe.,so it was loud. I used these DynoMax on Slants too.
My 373 Valiant had a drone on a up hill pull around 40ish mph. Same mufflers on my LA 318 Belvedere no drone at all.
You may want to use a resonator or not till you drive you ride.