I have a 98 Z28 6 speed, i am bout to put a slp loudmouth II system with slp long tubes, slp lid, ls6 intake, 85 mm throttle body, basically just some bolt ons. What kind of time would i be able to hit in 1/4 mile. I raced it in 1/8th mile n it ran a 9.18 completely stock. OOO and is there any other type of easy bolt on that i didnt mention that i could put on.

 

i'm no expert, and this is purely a guess. But i would say you would probaly run mid 12's...

 

throw on some 3.73 gears, that will help a good bit

 

i think that mid 12's is a bit much cus your average drivers gonna be in the low 13's stock and since you on street rubber id guess that 12.8-12.7 is gonna be your range assuming you can drive it