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1 3/4" headers too much for a GM 350?

3244 Views 20 Replies 8 Participants Last post by  67elko
hi all,

I have a GM 350 crate engine in my '67. I currently have 1 3/4" headers going back to dual 2 1/2" exhaust. I think I have too much flow, robbing me of low end torque/performance. Should I replace the headers with 1.5" shorties into dual 2" exhaust?
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I don't think 1-5/8" headers would have that much of an impact by themselves if you are feeling a low-end performance hit. Ditto on the tune/timing suggestion above.
1 - 1 of 21 Posts
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