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Topic Review (Newest First)
07-27-2012 04:24 PM
bigdog7373 I say 2.25” smallest on a v8 no matter what size. Any smaller causes too much back pressure and weird sound. For your 383 i'd get 2.5".
07-26-2012 11:49 PM
compajosh Cool beans that helped alot thanks brother. I should be ok with 2 1/4inch pipes then!
07-26-2012 11:41 PM

Here is some material to read. It may help in your decision on your exhaust size.How To Calculate Muffler Size and Exhaust Pipe Diameter | Exhaust Videos
07-26-2012 11:22 PM
Exhuast ?

Hi guys this should be easy I have a 73 impala with a 383sbc 350-375hrs/ 400fbls of torque. My car has 2 inch pipes,would this be to little back pressure or to much; I was going to run straight pipe with no mufflers on my 2 inch pipes.I have headers on it to with 3inch collectors. Like to no what u think thanks. and if the 2inch would work should I add a cross pipe?

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