LT1-LT4 Modifications 1993-97 Gen II Small Block V8

3rd and 4th gen headers interchange?

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Old 01-20-2008, 12:15 PM
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Default 3rd and 4th gen headers interchange?

does anyone know if third and forth generation headers will interchange? I' not talking about the bolt pattern I'm talking about the bends or over all shape and where they dump.
Old 01-20-2008, 12:19 PM
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Probably not.

The fourth gens are a more tighter fit
Old 01-20-2008, 12:30 PM
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4th gens will not work....I have a third gen and wish 4th gen headers would fit bc they are way cheaper


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Old 01-20-2008, 12:44 PM
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Thats what I was affraid of. I found some third gen headers with spread exhaust ports for a good price just trying to get away without spending $1000 on headers.
Old 01-20-2008, 03:45 PM
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I asked this awhile back since I have a set of 3rd Gen headers I never used, and I thought someone here used a set, but I don't really know. I do know that someone said D-Port LT1 heads can use older Circle Port style if you do a motor swap.



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