Flomaster or what??
 

While my 78 SC is down for the winter I'd like to upgrade the exhaust. Some of you guys mentioned using a flowmaster? What part number works? Is's single in and single out.
What do you guys suggest ?

Your best bet is an M&K muffler developed by member MB911, Ben Mcfarland.

I believe he sells them through Pelican.

BTW, you may want to have this moved to the Tech forum.

Good luck!

I put a Delta Series 50 Flowmaster on my SC. It sounds great, David

I used a muffler for a late model Camaro and just capped off one outlet.
Oh, that M+K guy makes a nice muffler as well and you can get it from Pelican.;)
I always look for the least costly way to upgrade my 911 so I couldn't spend the money on a brand name "porsche" set up.

single in, single out P/N 52580- Flowmaster, official application is for a Roush Mustang.

It fits under there.

rjp

Thanks for the flowmaster part number.
I really appreciate it.

Any pictures?

JoeA

I like the 2 in 2 out Camaro muffler to give you the crossover effect if you are using SSI's or individual style headers... Think it might be the 80 series?

I'm getting the one-in one-out Flowmaster put on my car next week.

Chris, what is the crossover effect? Visual? Auditory? HP?

I've been told is has a RSR type sound to it. I've never heard an RSR run so I can't verify this to be true.

It's a raspy, not very deep and at full throttle it sounds great. No resonance, and you can have a normal conversation in my car. My present setup is with a euro bypass instead of cat.

I came from stock with a collapsed cat so yes, it's definitely an improvement power wise.

rjp

I think he's referring to pulse timing for the exhaust.

v8 guys will install a crossover at a specific point in the exhaust (usually where the exhaust is hottest) between the left and right cylinder banks of the engine, the idea is that the timing of exhaust pulses will improve cylinder evacuation and fill. It suppposedly increases low end torque as well.

I doubt I'd ever do it on one of mine since like like the choppy exhaust sound. That's part of the appeal of a v8 hotrod, the cackle.

rjp

Randy's on the money. It can improve scavenging and therefore low-end torque....

Thanks guys. Wonder if Ben is working on something like that.

yeah same thing ours crossover

Ditto. I've seen his stuff in person-beautiful! He's making me a custom muff and turbo collector, etc very soon. I'm very excited to install it. His mufflers are about half of what a Fabspeed cost and it's handmade right here in the good ole USA-not China.

The so called cross over effect does't exist on an even fire engine.:rolleyes:

If it did you can bet the factory would have used it and not bothered w/ vram and vcam.

It doesn't work on Ferrari V8s(even fire) or champ car V8s(also even fire)

It does work on odd fire American V8s w/ 90 degree blocks and 90 degree cranks because of the consecutive firing of cylinders on the same bank. It prevents the overload of the mufflers that would occur when properly sized for the rest of the cylinders.

For dual in and out you want the Flowmaster 80 series 2 chamber #42852 2x 2.5" In and 2x2.5" out.

Many prefer the cross flow Magnaflow mufflers