exhaust help

[layedoutregal]

MN? damn 8 hrs from me lol, its cool i dont think i could have ran an x pipe to begin with, i have an airride system with about 8-10in of lift and i think my drive shaft would hit, im happy with the sound, thanks again

 

[robwkamm]

run the 3 inchers. you can put 2.5 inch tail pipes on it if you like it . it will quite down a little. now when you upgrade to the 455 your front half o the exhaust is ready for it.

 

[pontiacgp]

use this to figure out what you need for your exhaust...2.2 cfm per hp of your engine.....anything bigger won't help performance but will probably cost you more and make unnecessary noise...

for example a 500 hp engine needs an unrestricted flow for 1100 cfm for full potential....for duels that's 550 cfm per side and for a 2.5" pipe you're at about 560 cfm