I don't know, but you can have them ported for varying degrees of competition.
http://www.gesslerheadporting.com/ge...enu/Services03
Junior Member
Fellas,
just curious,,,, on a 455, how many hp are the stock exhaust manifolds good for?
Craig
I don't know, but you can have them ported for varying degrees of competition.
http://www.gesslerheadporting.com/ge...enu/Services03
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Junior Member
Wow,, that's just as expensive as buying headers!
Yeah, but believe me, a lot less hassles. Try installing a set of headers on any 400/430/455.
Tom Telesco
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Junior Member
Boy i can see that! I'm trying to make a set of headers right now and it
isn't any fun at all.. I usually like fabbing things, but this,,, it just sucks..
Think i may just start looking for a set of stock manifolds.
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