Didn't get anything.

 

WTF.

I'll get it to you. I have it on my work address - it may take until morning when I get back in.

I'll send it again from here, for now.

 

Since you're still undecided on what tubes to get, you might what to check out Hedman Hedders, Dynomax, and Doug Thorley's stuff. I know they all make them for our trucks now, and it might be worth looking into. I think they're all long tubes too. They probably won't have a bullshit $700+ price tag either. I have no experience with any of these, but you should always keeps you options open.

I know a lot of 1st gen Camaro guys like Thorley's Tri-Y's, because they make more power throughout the rpm range than standard headers. But every situation is different. Worth looking into though.

 

I'd definitely consider the Thorley's - but they (thorley) say their Tri-Y's won't fit the 6.0's for some reason. I asked them about it, and they pointed me to a discontinued(?) set of shorties. (Part numer "309" is what I'm told...)

Let me check out Hedman and Dynomax - I didn't realize they did truck stuff now. Thanks for the suggestions!

 

I kinda like the idea of tri-y's. Something a little different. I think Steve Bryant has a set on his LQ4, theres an install post around somewhere. So they will fit, but... the Thorleys only have 1.5" pipes to 2.5" collector, probably why they don't list them for 6.0L engines. Then again, 2.5" is the same size as the stock cat pipe.

 

B&B 6.0 shorty headers: 1.75" primaries, 3" collectors. 12-14 rwhp.

Pictures here in this PDF.

They're as short as hell, but I like these specs. Plus the fact that they're stainless. I don't think a ceramic coated steel header will last long at all.

 

Can anyone here view a .dwg file? (autocad I believe?)

I got one from B&B.

EDIT: Got that sorted out... it's attached.

 

I thought the hedman and dynomax headers are shorties

 

I've got the Thorley tri-y's and I love them.It made a big difference compared to the hedman shorties I had.They bolted right on and fit perfect.

 

Randy at Thorley the tri-y gives about 22hp(for a 4.8) as opposed to 8 to 10 for their shorty. If I remember correctly it was rwhp. I have a '04 4.8 Sierra and he said they only have the shorty for mine. I'd have to buy tri-ys for an older ('01 or so) and plug the egr bung. Does the different fiiring order for LS1s change anything as far as how much a tri-y would help?