I am in the process of swapping a 3400 v6 into my fiero and I want to upgrade to the 3500 exhaust manifolds for two reasons. 1: They flow better then the 3400's. 2: They will allow for a better exhaust routing for my setup. My question is, I know the 3500 manifolds changed during production at one time and there are two styles of 3500 manifolds, which is best for flow? I am guessing the later style, but what years/models of cars should I look for. Also I think these parts can be purchased through GM parts direct, no?
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i'd imagine the "header" style that came on the Malibu 3500's would be better flowing then the log style.
we've been planning on using a set of those on a 3400 Sunbird for a while now.. just need the flanges that bolt to the outlets.
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I have a set of 04 Malibu 3500 manifolds if you want them. They are currently taking up space in my garage. I'm not sure if I have the heat shields though.
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Comming soonOriginally posted by Superdave View Post
we've been planning on using a set of those on a 3400 Sunbird for a while now.. just need the flanges that bolt to the outlets.
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