at what point do you grow out of single 3" exhaust?

[GraniteBlueNNBS]

exhaust is Wheels are pimp..

[408.Luke]

so are they the F body long tubes?? or truck ones i need something good but idk what will fit my awd

wheels look good btw

[TXsilverado]

they are f-body headers. i decided to go with the 1 7/8 stepped to 2" with a 3.5" collector.

i have a feeling my LS1 is on it's way out. its drinking tons of oil and blowing out the dipstick tube. sounds like a ring going to me. if so its getting a fresh rebuild with some forged pistons and a bigger shot. all pending the compression and leakdown test tonight.

if the motor is bad, i wouldnt blame it. the guy before me had a MS3 and 200 shot on the motor, and i have my cam and 150 through it. it has about 140,000 HARD miles on her. im impressed with how well its run for its age/miles. last time to the track was 11.5 on a 125 shot. i still think it has more in it even if it has a bad ring or 2.