Stock LSX manifold flanges
 

Anyone know where I can buy exhaust flanges to mate up with my stock 5.3 exhaust manifolds? I would really like it if they already had the O2 sensor bungs in them, but that's probably asking too much.

Re: Stock LSX manifold flanges
 

Josh just had the exhaust done on his 6.0 and it looks like he used some that were laser cut. It looks like the exhaust shop built everything from there on.

Go to his build thread and ask if he bought them somewhere or if his shop had them.

http://67-72chevytrucks.com/vboard/s...381369&page=25

http://67-72chevytrucks.com/vboard/a...1&d=1282588477

Re: Stock LSX manifold flanges
 

On mine one side is a "bell" on the pipe with a backer flange and I ground the other one down and removed the pipe stub. I plan on rewelding one to it. That is of course if you have the stock head pipes. Jay

Re: Stock LSX manifold flanges
 

Thanks, I did. I'll have to hope that he responds.

Re: Stock LSX manifold flanges
 

AHAAA! I will always respond. The flanges are the factory ones that came on the donor trucks 6.0 engine. My exhaust guy took the flanges and opened them up to 3 inches to match the true 3" duals and H-Pipe he installed. He also installed o2 bungs anout 6 inches or so down from there in the down pipe.

Re: Stock LSX manifold flanges
 

Thanks for the response, but I don't have the donor vehicle's exhaust to pull from. Back to the drawing board...

Re: Stock LSX manifold flanges
 

Become a supporting member and put an ad in the classifides. I would bet someone on here has some you could have REALLY cheap! ;)