Im looking into installing an Lt1 into my car and I would like to know what is the best/most affordable headders and y-pipe for an Lt1 installed into my 91 camaro.

 

Best? PM TGO member Dyno Don, tell him what you're doing.

Most affordable? A set with matching y-pipe that is at least 1-5/8" primary, assuming you're talking about shorties. Most anything you get that's below $400 will need some sort of modification. If you want or would be interested in dual cats, the Hedman emissions-legal set for dual cats is pretty decent.

Can you weld? You might consider welding around the tubes on the outsides of the flanges to fill in the gaps around the tubes, then port matching the flanges on the head side.

 

No unfortunatly I cant weld. So will any headder with a 1-5/8" primary, work with aany chevy 350 block?

 

https://www.thirdgen.org/forums/ltx-...aders-lt1.html

 

Cool, What if i dont go with an lt1 though, im also considering a carbed 350, will headders with a 1-5/8" primary still work... also if i switch over to a carbed engine I wont have to worry about o2 sensor ports or will I?

 

Do yourself a favor and go with 1 3/4 headers. There's no reason to limit your header size, within reason of course.

 

1 3/4 headers are a waste on an LT1, the stepping to the larger tube size has shown to actually rob power and the LT1s love the 1 5/8 tube for some reason.

 

I would like to see how more flow hurts power?

 

It's the way the exhaust exits out of the head and has to deal with the step which causes some swirling in the header.

 

Back to my question though what header should I use for a carbed 350, not an Lt1. Also will I have to worry about O2 sensors?

 

These:

 

What Type Are those Dyno Don... Ive herd that you make/sell sets of headders. About how much do they go for.