Check out the wicked gas mileage I got on my 5.3L with 131 000 miles
Thread
Thread Starter
Forum
Replies
Last Post
FlowmasterMufflers
GM Engine & Exhaust Performance
0
07-17-2015 03:26 PM
Mossyoakglock
GMT 900 Trucks General Discussion
0
07-17-2015 08:30 AM
Nimoryan
GMT 800 & Older GM General Discussion
0
07-05-2015 03:50 PM