Recent content by CMCE

Yes they are slightly oval, and they are the best at quieting down a rowdy engine. If possible, mount them before the mufflers for a slightly better result.

If you can find the room, these resonators from Vibrant work very well. Vibrant Ultra Quiet

Not much to them really. I know they also sell a version with a hole drilled in either side of both 'V's. I have not heard them in person but a friend has put them on his SEMA 442 project car, and he describes them as 'extremely loud'.

You can blame that on the 18" Summit Turbos. They didn't remain on the car too long...too loud and didn't prefer the tone either.

I know it's a Chevy, but you get the gist... Classic Muscle Car Exhaust

Rumblefish360, thanks for that info. I know Pypes is looking for a volunteer to have downpipes made for the A-Body. Question- how many variations are there for A-Body manifolds?

Although that kit will fit a '75, advertising as so will land Flowmaster and Pypes in hot water with the Feds very quickly. Pypes makes systems for the A-Body, in both H and X-pipe configurations. You also have a choice of 4 different mufflers. As correctly stated above, you will need long tube...

Can't really go wrong with Dynomax Ultra Flo's. They'll support 910 HP before becoming a restriction and sound good doing it. This is the muffler the F.A.S.T. guy's use because of the flow. 2.5" Dynomax Ultra Flo Welded Mufflers DYN17222

Thanks for posting this Kent. It certainly solidifies some well understood exhaust principles.

Classic Muscle Car Exhaust final cart price is $569.68 Free shipping. PYPES '67-'73 MOPAR A-BODY HYBRID 3"- 2.5" W/ X-PIPE SYSTEM - Classic Muscle Car Exhaust

Now THIS is what I call useful information! Thanks so much for posting this.

Someone did do a test using an Infrared thermometer from the header tubes to the tailpipe. Wish I could remember the numbers but there is a dramatic drop in temperature (and density) by the time the exhaust gases reach the tailpipes. You can't touch a header tube, but you can touch a tailpipe...

There are certain models from Ford, GM, and Mopar that struggle with fitment issues when it comes to 3" tailpipes, and Pypes is the first manufacture (to my knowledge) to offer this 3"-2.5" combination. So far they've come out with 65-70 & 71-73 Mustang, 65-70 GM B-Body, 62-67 Nova, and of...

Pypes has come out with a new 'Hybrid' X-Pipe system where the system is a true 3" up to the outlet of the muffler, then it's 2.5" tailpipes. It's designed for cars in the 600-750HP range and eliminates the fitment problems associated with 3" tailpipes. Three different mufflers are offered and...

If muffler CFM is your concern, a straight through perforated pipe muffler is where you should be looking. Pypes Race Pro, Magnaflow, and Dynomax Ultra Flo come to mind. The Dynomax Ultra Flo's will handle up to 2,000 HP. It's the muffler of choice for the F.A.S.T. Drag racers. Dynomax also has...