exhaust flanges

[ashman]

I am going to be using Camaro exhaust manifolds for my 6.0 swap and it turns out they use a unique exhaust flange.

I'm having trouble finding them for a decent price so I'm thinking of making them myself. Any magic to it? Cut the shape, drill the holes, done. right?

How thick should I make them? I've seen 3/8 and 5/16. I'm guessing bigger is better, less chance of warping. Any downsides?

Thanks.

 

[ashman]

I managed to find these 2 .pdf documents for the flanges. Unfortunately the drivers side drawing doesn't print at the true scale but its a start.

 

[ashman]

I guess I'm the only one dealing with this issue.

Anyway, I'm going to buy some 3/8 plate tomorrow and try making them up. Another interesting thing I realized is that the 2 manifolds don't have the same size exit hole. The drivers side is 2.5 and the passenger is 2.3. weird.

 

[vandelay industries]

Good luck; i'm dealing with a "unique" exhaust situation myself.

i guess if you can weld you'll be ok.......(?)

 

[vandelay industries]

Oh and to answer the question, i'm thinking thicker would be better. As long as it can withstand the heat etc.

You may want to get a C.O. detector for the inside of the cabin just to check for leaks. Kind of anal i know, but they're relatively cheap.

 

[ashman]

I took a look at the exhaust flanges that came with the engine and they are 3/8 so I'm going to go with that for now.

BTW, didn't you use to work as a latex salesman? :P

 

[K85 Octane]

And yeah, the different sizes are weird. The stock truck and TBSS manifolds are different from side to side. The do however, use the same flange. (TBSS and Truck)

 

[Deuling]

Post pics

 

[ashman]

Post pics

Got em done yesterday.

Printed both diagrams from the .pdf files above. The one on the left I had to print at 132% to get it correct.

I decided to trace the exhaust manifolds to get the outside shape.

All done. I wish I would have left a bit more material on the left side of the right one but it'll work for what I need.