GREGGPENN

Is there anyone who sells the flanges used to connect rear Y-pipes to the mid-section?

I'm talking about the oval(ish) flange that has 4 bolt holes on an LT1.

(On an L98, it has two bolt holes...but I need the 4-bolt version.)

Aardwolf

I'm not picturing exactly what you want there but I did get flanges from Summit when I built my exhaust.

http://www.summitracing.com/search/D...s/?Ns=Rank|Asc

Looks like they are all three bolt. If you can't find them you may have to fab some, fairly simple part to make.

thedudeman321

My 92 LT1 has no Y pipes anywhere, nor any 4 bolt flanges..

Only place the 2 pipes come together is the resonator, and its all factory welds.

bill mcdonald

I think your looking for the 4 bolt flange that connects up the 84-85 front and rear Y's to the cat.

This is an lt1 exhuast.

bill mcdonald

84 Y pipe.

GREGGPENN

Interesting....Yep, I have been looking to see if I could find the 4-bolt flange as seen on the 84 Y-pipe above. (Don't need the rest of the "Y" though.)

FWIW: It was part of the 91-96 kit for SideEffects. So, I thought there must be a flange behind the resonator. Guess not. PowerEffects doesn't have them any more. (BTW,,,they said LTx had 4-bolt vs 2-bolt for L98s. Sounds like they remember wrong.)

That flange is probably only available (if at all) from exhaust manufacturers. My exhaust shop didn't know if they could get one.

GREGGPENN

I just found one possible location for the part....

http://www.torquetechexh.com/flanges.htm

redrose

been saving a used 84 rear y flange + an inch of pipe for about 25 years...it can be yours for $1 per year, shipped.