Yellow Bullet Forums banner

4" mufflers

2361 Views 20 Replies 17 Participants Last post by  JeffMcKC
What are the least restrictive 4" mufflers for an N/A application?
1 - 20 of 21 Posts
:supz:Don't make any fast moves, I may have a set for sale
:supz:Don't make any fast moves, I may have a set for sale
pm me if you have some for sale.
Schoenfield makes a muffler similar to the pic above. They also make it in a collector insert that works great.
I have the Insert's, works pretty good. 4" aswell, just takes the tone down alittle...
Custom spec build headers, didn't want to chance the added length with the muffler.


T-flow
I liked my Dynatechs but I am changing to vibrants on my new engine.
Schoenfield makes a muffler similar to the pic above. They also make it in a collector insert that works great.

and a hell of alot cheaper to.
what size pipe i have a 2 1/4 to 4" collector that is made into collector muffler with 1/2 a bullet on it then 1/4 turned down jethot coated
Schoenfield makes a muffler similar to the pic above. They also make it in a collector insert that works great.
Has anyone tried the schoenfields on a drag car? We had to run them on some dirt circle track cars a few years ago, and they toned them down some. Seems like they should work good in drag too..
I run the Vibrants. Not sure how you can get much cheaper than $75 each for a stainless muffler.
I run Magnaflow race mufflers. Straight through design. No baffles, no louvers etc. Without the mufflers, I need ear plugs just to fire up the engine. Now after a day of racing with no ear plugs, my ears aren't ringing at ht end of the day.

Dual 4" in/out.
go with the magnaflow ones
Has anyone tried the schoenfields on a drag car? We had to run them on some dirt circle track cars a few years ago, and they toned them down some. Seems like they should work good in drag too..
Me and 3/4 of the cars at Greer Dragway has been running them for about 10 years now. Track has a muffler rule per a county ordinance. I wouldn't have a car without them.
go with the magnaflow ones
x2, thats what i run.
I have the 3.5" by 6" long schoenfelds on my 434 SBF. Running supercomp headers with 3.5" collector. I cut the 3 bolt flange off and used a straight band clamp to attach the schoenfeld to the headers. I notched the muffler and put a hole in the band clamp around the O2 sensor bung, so that helps keep it all together without getting loose and coming off the header. They toned it down a little, but not much. My class required mufflers. Just don't stick your fingers up inside the muffler LOL, those sharp edges in there will get ya.
I have been running the dynomax bullet mufflers for years and I like them a lot.
1 - 20 of 21 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Top