Mufflers and Dumps

[my73charger]

I have a performance question.  If you plan to put dumps on your exhaust, does it really matter what kind of muffler you use performance wise?  The reason I ask is I plan to do just that, but I have some Flowmasters on the car.  I had planned to change to Dynomax Ultraflo's, but it just is not in the budget this year.  I plan to run a 3" pipe and dumps off the header and then reduce down to 2.5" exhaust and keep my current 2.5" flowmaster mufflers at least for the time being.  I plan to uncork at the track, and I am obviously fine with less performance on the street.  My only concern is that this does not effect performance at the track.  I used to always take the entire exhaust off when I went racing, but this is getting old and I am getting old...

[mopar0166]

mine works awesome and i kept it 3 inch all the way back with dyno max mufflers.  I used Fred's headers cutout system and it works really good and super easy to install.  you can be loud or stealth very easily.

[firefighter3931]

It will run better with the 3in pipe and dump than it does with the exhaust removed entirely. Most milder builds show better results with a header extension of 18 inches or thereabouts.  

I'd go ahead with the 3in headpipe and locate the cutout 12-14 inches from the header collector. At the track just remove the plates and you're good to go  

http://www.summitracing.com/parts/SUM-670137/

That's how mine is set up. In the pic below you can see the dump from the side of the car. I aimed mine down slightly to keep the hot gasses away from the fuel & brake lines. At the track it takes 5 minutes to remove the plates.



Ron

[Challenger340]

It will run better with the 3in pipe and dump than id does with the exhaust removed entirely. Most milder builds show better results with a header extension of 18 inches or thereabouts. 

I'd go ahead with the 3in headpipe and locate the cutout 12-14 inches from the header collector. At the track just remove the plates and you're good to go 

http://www.summitracing.com/parts/SUM-670137/

That's how mine is set up. In the pic below you can see the dump from the side of the car. I aimed mine down slightly to keep the hot gasses away from the fuel & brake lines. At the track it takes 5 minutes to remove the plates.



Ron

Now THAT,
is a fine looking ride 'ya got there Ron !

[my73charger]

It will run better with the 3in pipe and dump than it does with the exhaust removed entirely. Most milder builds show better results with a header extension of 18 inches or thereabouts.  

I'd go ahead with the 3in headpipe and locate the cutout 12-14 inches from the header collector. At the track just remove the plates and you're good to go  

http://www.summitracing.com/parts/SUM-670137/

That's how mine is set up. In the pic below you can see the dump from the side of the car. I aimed mine down slightly to keep the hot gasses away from the fuel & brake lines. At the track it takes 5 minutes to remove the plates.



Ron

Thanks Ron!

[Bossman963]

Mopar0166 where is some info about Freds cut outs ? Im looking for a set of ss electric cut outs
thx in advance Mike