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Old 02-06-2011, 08:53 AM   #9
Darth_Emma
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Drives: under contruction
Join Date: Nov 2009
Location: Marysville, Ohio
Posts: 12,996
The 1 7/8" lt headers are the perfect balance between air flow and back pressure with a sc. I don't claim to be an expert, but I think I did my homework on this. The 1 7/8" lts matcched with the 3.6" pulley on my maggie give me about 7 lbs of boost. If you are going to be going up to about 650 rwhp, then these headers are fine.

Larger headers will cause you to lose back pressure and lower your boost.
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