Stock LSX manifold flanges - The 1947 - Present Chevrolet & GMC Truck Message Board Network

67C10BUB · 08-30-2010, 04:01 PM

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.

glock35ipsc · 08-31-2010, 11:59 AM

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

Big Port Jimmy 6 · 08-31-2010, 05:45 PM

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

67C10BUB · 09-01-2010, 05:32 AM

Quote:

Originally Posted by glock35ipsc

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

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

STOCKISH · 09-01-2010, 11:24 AM

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.

67C10BUB · 09-01-2010, 01:54 PM

Quote:

Originally Posted by 1972SuperCheyenne

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.

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

STOCKISH · 09-02-2010, 09:27 PM

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

08-30-2010, 04:01 PM	#1
67C10BUB Registered User Join Date: Aug 2010 Location: Alta Loma, CA Posts: 610	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.

08-31-2010, 11:59 AM	#2
glock35ipsc Next project: 1970 K10 Join Date: Feb 2004 Location: Fort Collins, Colo 80524 Posts: 6,684	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 __________________ *Bob* 1970 Chevy K10 LWB "Goldie" 350/TH350 *next project!!* 1981 Chevy C10 LWB 355/TH350 - My son's truck LS SWAP FORUM! Tons of LS swap info here! PLEASE CLICK HERE TO SUPPORT THE GREATEST BOARD ON THE NET! CLICK HERE FOR THE FAQ INDEX by KRUE

08-31-2010, 05:45 PM	#3
Big Port Jimmy 6 Addicted to Rust Join Date: Dec 2009 Location: Abbeville SC Posts: 1,030	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 __________________ Current trucks: (48 GMC100 320 inliner) Gone (48 Suburban in pieces) Sold 87 GMC CCSB 5.3 4l60E Daily Driver ECTA National record holder XO/PP We never really grow up, we just learn how to act in public.

09-01-2010, 11:24 AM	#5
STOCKISH Formerly- 1972SuperCheyenne Join Date: Oct 2008 Location: Wake Forest NC Posts: 5,782	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. Attached Images __________________ --Josh My Build Thread:http://67-72chevytrucks.com/vboard/s...d.php?t=799218 A good crossthread is better than Loctite any day. Life is not about what you have, but who you have to share it with.

09-02-2010, 09:27 PM	#7
STOCKISH Formerly- 1972SuperCheyenne Join Date: Oct 2008 Location: Wake Forest NC Posts: 5,782	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! __________________ --Josh My Build Thread:http://67-72chevytrucks.com/vboard/s...d.php?t=799218 A good crossthread is better than Loctite any day. Life is not about what you have, but who you have to share it with.

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