I just a full an exhust on my car about a week ago. Well I just noticed that my intermediate pipe has a nice size hole in it. So I was thinkin whut size pipe should I get for best sound and performance. Here is what I got. 305 TBI, Hedman Short Block Headers, High Flow Cat, 2.5 inch Intermdediate pipe. Flow masters 80 series. I was thinking of 3.5, but my friend told me that is over kill for a 305. Any Idea. Also I dont like the look of big tips, is there any thing I can do besides tips? I am tired of seeing those UGLY tail pipes. Thanks

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89 RS Camaro
Hedman Headers, Highflow Cat, Flowmaster 80 Series
180 Degree Thermo
Open Air Element with K&N Air Filter
Custum Burned Chip

So Many Mods......so little time

www.rit.edu/~cjp8408

 

3.5 is overkill for some 350s. I wouldn't go over 3" for a 305, and even that can be pushing it sometimes.

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1987 Chevy Camaro IROC-Z
L98 TPI 350 (5.7L)
TH 700R-4 Transmission
Borg Warner 7.75" 9 Bolt Rear End with 2.77:1 Gears.

Current Mods: LT4 HOT Cam, Comp Cams 1.52:1 Roller Rocker Arms, LPE High Flow TPI Baseplate, Edelbrock TES 1 5/8" Headers, Catco 3" High-Flow Catalytic Converter, Hooker 3" Aerochamber Cat-Back System, Transgo Shift Kit, Performance Resource Chip, Accel Ignition, K&N Filters, JET TPI Air Foil, All Free Mods, Falken ZIEX Z-Rated Tires.

Best ET: 14.32 @ 97.7mph
(corrected for elevation)