Intercooler2

iTrader: (24)

http://www.mandrelbendingsolutions.c.../Detail?no=447


Anyone see a better design?

BenLaz

iTrader: (6)

look for the flowmaster dual 3" to single 4" outlet merge... a much better design then that one!

TheSilverOne

iTrader: (22)

yeah that one =

HavATampa

iTrader: (49)

Doesn't seem very smooth to me. Looks as though the exhaust gases will collide with each other as they enter the single pipe. They say it's a 4" In/3" Out. I think they are saying two 2" pipes in equals 4" and the exit is 3". Are you looking for a 4" exit merge? A better 3" to 4" merge would be the Flowmaster. Thunder Racing p/n 30-Y300400

Intercooler2

iTrader: (24)

Yea! I am going to do 3" pipe off my headers to a Y then go from that to 4" back to my muffler. So 3 to 4.

HavATampa

iTrader: (49)

It's going to be hard to find anything better than the Flowmaster merge then.

Marc 85Z28

iTrader: (8)

Contact Tyson at PAF (or PM Indukted1)

He is in Westminster, and can do literally anything you want exhaust-wise. Very talented fabricator

Intercooler2

iTrader: (24)

Well running into some issues here. We had my car up on the lift figuring out what to do and the 3" off the collectors to the Y is no problem. The problem is going from the Y back 4" mating to the 2.75" stock piece. Nobody makes a 4" to 2.75" transition. Anyone know how to accomplish this or someone who can make such a piece? I looked on-line and found nothing.

TheSilverOne

iTrader: (22)

you'd have to use a 4 inch to 3 inch reducer, then a 3 inch reducer to a 2.75 inch reducer.

99345hp

why bother with the 4" if you are going to just neck it all down to 2.75"?

Full-Force

iTrader: (11)

Because most people put a cutout on it before they neck it down.

94'BLKBRD

iTrader: (76)

I agree.

HavATampa

iTrader: (49)

Don't bother necking it down. Just keep going 4" all the way to the back.
https://ls1tech.com/forums/showthrea...ferrerid=13535

sixvi6-camaro

iTrader: (9)

sure.. make it yourself other than that there is no good way to reduce the exhaust to that extreme without doing it using a off the shelf reducers.

Just to give you an idea.. I make my own Offset reducers from 3" to 2.5" to clear the underbody brace piece easier in our F-cars. 4" to 2.75 is a bit crazy but it can be done and is a bit silly to cause such a serious restriction but to each his own.. Here are some pics of the last 3" id - 2.5" od one I made..

http://home.comcast.net/~pewter_camaro/welding_17.jpg
http://home.comcast.net/~pewter_camaro/welding_18.jpg
http://home.comcast.net/~pewter_camaro/welding_19.jpg
and some pics of an older one showing it completed..
http://home.comcast.net/~pewter_camaro/welding_02.jpg
http://home.comcast.net/~pewter_camaro/welding_03.jpg

Intercooler2

iTrader: (24)

Yea a 4" cutout before. Why? Because with the stock muffler setup I know it won't be crazy loud or drone. It's still my cruiser! But I can open up the 4" and get great flow at the track. Also if you come of the headers with 3" you have to use the 4" Y or go to a 2.5" size to 3" off the Y. I prefer 4"