Are headers worth it?
Thread Starter
Cruising
Joined: Mar 2005
Posts: 11
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From: Northern Virginia
Are headers worth it?
I have a set of Hedman headers from my uncle. Is it worth putting them on if I have to keep a cat. on it, or should I just leave the manifolds on? The whole exhaust needs to be replaced either way.
77 L-48
77 L-48
Race Director
Joined: Sep 2004
Posts: 11,874
Likes: 263
From: Arlington Va Current ride 04 vert, previous vettes: 69 vert, 77 resto mod
Originally Posted by stock77
I have a set of Hedman headers from my uncle. Is it worth putting them on if I have to keep a cat. on it, or should I just leave the manifolds on? The whole exhaust needs to be replaced either way.
77 L-48
77 L-48
http://forums.corvetteforum.com/show...4&forum_id=119
Racer
Joined: Jan 2005
Posts: 492
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From: Birmingham AL
Originally Posted by stock77
I have a set of Hedman headers from my uncle. Is it worth putting them on if I have to keep a cat. on it, or should I just leave the manifolds on? The whole exhaust needs to be replaced either way.
77 L-48
77 L-48
Pro
Joined: Dec 2004
Posts: 570
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From: glace bay nova scotia
get the free set,then get the headers hooked up to a set of straight pipes with some cheap turbo mufflers(free flow).when it's time to re-certify, swap in the manifolds and smog stuff.
Do you have mobile set ups or do the police check??
we have nothing, and i like it just fine. the nearest sniffer is 250 miles away and comes around to offer free checkups once a year. no penalties, if you go in voluntarily they give you the printout,that's it.
Do you have mobile set ups or do the police check??
we have nothing, and i like it just fine. the nearest sniffer is 250 miles away and comes around to offer free checkups once a year. no penalties, if you go in voluntarily they give you the printout,that's it.
Race Director
Joined: Jan 2000
Posts: 12,399
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From: San Jose CA
Originally Posted by markdtn
For a bone stock or close engine, I doubt you will notice much improvement with headers. If you are making 350-400 hp or so it may help.
I also noticed another 2/10ths of a second going from 2.25" true dual exhaust to 2.5" true dual exhaust on the same motor.
-Steve
Thread Starter
Cruising
Joined: Mar 2005
Posts: 11
Likes: 0
From: Northern Virginia
I don't have to get it inspected but I was told that if you run into the wrong state trooper he can have your car towed to a dealership to have it put back to spec. all at your expense. I also can't find any shop that will put the headers on for me without a cat. Some of the shops said I shouldn't waste my time with the headers and others were eager to do it, I think just for the money. I can do it myself without the headers but there will have to be some fabrication with them.
