I just finished up my single 3" system today, components are as follows: Edelbrock TES headers, 2 1/4" y pipe, 3" single exhaust tubing, back to a hooker areo chamber "cat back" exhaust system.

I cut the y pipe off at the joint, where the two collector pipes emerge so it was again at its 3" diameter. The Areo Chamber system was off of another 3rd gen, and was missing the intermediate pipe from the cat to the muffler, so I bent up a 3" version, I think it was originally 2 3/4". The interesting thing was the dump. Where the cat should have been, there was much more room due to its removal, so I welded a 3" collector straight back, inline with the edelbrock y pipe. I try to get some pics up tomorrow, but for now, Ive got a few questions: on the end of the dump, I would like to put a block off plate, hopefully remotely activated. Anyone have an electronic/cable y-pipe for a dump, and know how well it works? Another question is this: I perused the dual pipes pics, and noticed a trend. Most of the cars there had neither sub-frame connectors and lowering springs, as well as low profile tires. These factors combine to give me a mere inch and a half of ground clearance, which is definitely not enough. Any measurements you all have had with a like set-up? I am using the interco 2" drop springs (quite happily) and Hotchkis SFC's. Thanks for the help,

 

Not sure why your having issues without seeing any pictures. I built my exhaust from a duel 3" to a single 4". My car is lowered 2" and has SFC and low profile tires 245/50/16 (for now)

If you look at this thread you can see my exhaust pics and I have over 4" of ground clearance.

https://www.thirdgen.org/forums/fabr...r-state-2.html

Are your pipes up close to the floor?

 

The pipes are touching the floor, at least right where the hump over the axle begins. I looked closely today, and I think I bent the angles wrong, I was trying to avoid cutting the pipe too close to the drive shaft, but it looks like every other third gen out there is running theirs right next to the shaft. Mine is along the same route, just not hugging the shaft like yours, but instead running towards the bottom of the drive shaft hump. I might be able to correct it with another bend or two, I just tack welded it in place for now. Anyone have any comments on which dump valve to use? I like the thought of electric, but Ive no idea how well they work...