i got a quickie/cheapie 5.3 swap happening in my little bros car. we're planning on using a set of f-body exhaust manifolds we've acquired. unfortunately we can't seem to locate a set of flanges for building the y-pipe. anyone have a source for these new? the guys around me want to sell the whole cat, for way too much.

 

Theres a few sponsors on 'tech selling them for $55/pr and up. I said F-that and broke out the torch using the gaskets as templates. Didnt cost me anything

Works great, no issues to report

 

hmmm...i didn't even really think about making my own. probably cause we don't have a torch...may be a good reason to go ahead and by one....

 

Stainless Works sells the flanges. I was going to pick them up but since my oil pan may not work like I want I may go long tubes

 

Find an F-car Y-pipe at the junkyard? Just cut off what you need.

 

I got all my exhaust parts from Columbia River, including a couple flanges:
http://www.mandrel-bends.com/catalog...st-flanges-52/

 

Wow, the SSW passenger side flange is only $43

I found a link for some .pdf drawings of them so you can make your own.

http://www.ls1tech.com/forums/conver...-drawings.html

 

man, thanks guys! that's all a huge help. i made my little bro fill up the oxy/acetylene tanks and ordered some exhaust flange gaskets. he's supposed to be picking up some 1/4" plate this week. i'll get right on this and try to post pictures up...right after my physics test...lol

 

lemme know if he wants to make a second set , i've got a couple bucks to help make it worthwhile

 

I bought flanges with O2 sensors from a guy right on here. I am sure they can be bought off Ls1tech also.

 

he's not making them, i'm making them. just want to clear that up, lol. let me make these first and figure out what it's going to take and i'll consider making more. with my engineering classes finally starting, i don't exactly have a huge amount of time on my hands though...i'm sure pocket can attest to that as well, lol!

 

if i knew for sure i could sell them i'd have a batch made. i'll talk to a guy i know that works at a machine shop with a water jet. see i'll show him those pdf's and see how many would have to be made to make it affordable and worth our while.

 

it'd have to be less than $50 for the pair of flanges to be worth not making them myself...and it's tough to make them and sell them for less than that. the resources behind making them with a water jet and using decent flange material is just too costly...

 

In their defense 3/8" stainless plate isnt chep either.

 

True, but most who bother with manifolds use mild steel exhaust and dont need the markup of SS

My 12"x48"x.25" mild steel plate set me back $25

 

Sorry to bring back an old thread. But i will be selling Pairs of them, 3/8 steel for $35 plus shipping. The more i sell the cheaper i can get them.

Edit: also i will soon be selling truck ones but havent gotten that far yet.

 

post up some pics, cause that's just about worth it! to clarify, these are for f-body manifolds, correct?

 

Yes they are f body flanges. But like i said, i will be making truck flanges too later down the road for the turbo guys.





This picture is to show matched up to the gaskets.

 

You should post up on LS1tech too. Conversion guys frequently need these

They might tag you for non-sponsor soliciting though

 

Yea thats what im a little worried about. But i might give it a try sorta. Sorta ease it in, in a few threads. I would love to be a sponser someday but
liberty automotive performance Just isnt there yet. (My online store/ buisiness im starting)

 

How much do the pair weigh sam? Are they under the .8 pound mark to be sent First Class?

 

2lb 4oz so cheapest would prolly be parcel post or something similar.

 

I am a mod on Tech and if you just make a FS post and say you have X amount of "spare" flanges available, you will be fine in the FS section and just mention it in any post you see where people are reusing the manifolds. I wouldnt say anything, but some are ***** over there.

 

Yea i hear you. But ill be respectable about it. I dont have 50 posts yet so i cant post in FS. I just joined when i got my lq4.

 

let me talk with my bro and get him hooked up with you, we're def going to need a set of these. what size is the hole for the exhaust tubing?

 

They are stock size. Which is, The bigger triangle flange is 2.5" and the smaller akward triangle is 2.3"

 

WTF is one side only 2,3"! Strange....what were the engineers at GM thinking?

 

Looks like really good quality flanges you´ve got there:-)

 

ok, pm me a full price with shipping to 31088 and i'll get with my brother and see about making this happen

 

Thank you.



MW66NOVA: PMed you

 

Best flange Ive ever had on a car came factory on my 80 Buick, looks like a GM donut flange but its not. It doesn't use any gasket, just a steel to steel donut connection that never leaks, wears out, blows out.........