wut would a 2000 firebird with the y87 and w68 appearence wit a flowmaster muffler do 0-60 and in the 1/4 mile guys? i have an idiot friend with a 2003 mach 1 that says im prolly in the high 16's im pretty sure low 15's and low 7's 0-60. any input would be great thanks!

 

you probably will run low 15s. o.O

 

High 15's

 

what he said

 

mid to high 15s.

 

My cousin ran at the track last summer stock 1998 firebird with a 3800 5 speed. He ran a 15.3 at 3800 altitude. Not to bad for stock. We just put a 6 lb. supercharger on this weekend so it should be great.