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6.2L Diesel Engine Discuss the 6.2 GM diesel engine & associated components.

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Old 11-17-2006, 05:10 PM   #1 (permalink)
jimmy6.2
 
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Headers

I was looking for headers for my 6.2 and found this



Anyone tried them?
did ya get more power?
Nicer sound?


Per

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Old 11-17-2006, 08:47 PM   #2 (permalink)
DieselBurps
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Those look like Chevy big block headers - are the BBC headers a match for the 6.2?

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Old 11-17-2006, 08:52 PM   #3 (permalink)
oil pan 4
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All I know is every time I look at my 6.2 I see some thing new that reminds me of SBC or BBC so could be a match.
I wouldn't be shocked at all if BBC headers fit the 6.2L.
We all know how unimaginitive GM is when it comes to making up new bolt paterns, that is a good thing.
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Old 11-17-2006, 08:59 PM   #4 (permalink)
yachtcare
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I've looked, there is a difference. Notice the diagonal arrangement of the mounting holes....the holes on the diesel are opposite those of the gasser. Now I have thought that if you found a header with enough flange area, you may be able to drill the holes in the proper place, but I've not done any actual measuring.

Edit: actually comparing the picture above to one of my spare exhaust mani's those bolt holes appear correct
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Old 11-18-2006, 04:17 PM   #5 (permalink)
jimmy6.2
 
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I'm thinking of building a set of header of my own.

what material to use? stainless or not?

dual 3" pipes would do the trick or do I need to go to 3,5" or more?



Like this design but im not sure it would fit.

Per
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Old 11-18-2006, 04:46 PM   #6 (permalink)
jimmy6.2
 
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Gov headers?




Per
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Old 11-18-2006, 05:38 PM   #7 (permalink)
keith_2500hd
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could make 1/2 inch adapters with 6.2 exhaust bolt(counter sunk head) pattern drilled out and thread holes for bb headers. if ports don't line up can cut flange.
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Old 11-18-2006, 08:51 PM   #8 (permalink)
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I think your best bet is the military headers, myself...
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Old 11-19-2006, 02:24 PM   #9 (permalink)
Craig M
 
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There are 2 or 3 companies that have made make headers for the 6.2's. Most have equal length tubes similar to the photo on the first post. You may have to go to NOS to get some now. Not a big demand for them. Stans headers is one place to check. I have one set and got it tested on a dyno. It did better than the stock GM manifolds. I forget the exact numbers but 5 or 8 HP if I recall. Other have gotten similar results with bigger exhausts and stock exhausst manifold. Did not get a test of the "custom" headers and bigger exhaust.
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Old 11-19-2006, 05:39 PM   #10 (permalink)
King Pin
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headers

When looking at the milatary "headers" they look better than stock but the transisition area looks weak for power. I'd go with the aftermarket headers. Dual 3'' with good muffler would be more than enough flow.

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