09 chevy silverado 5.3 4x4 15mile per gallion 10000

 

1994 silverado 5.7 13 city about 16.5 highway at 75 mph k&n air filter no cat flowmaster 50

 

Hey, for your mods, what kind of gas mileage are you getting? How does taking the cat out effect everything?

 

How does taking cat out effect the mpg? I know I have posted this to a couple of different people, but this is an old thread and kinda new to this type of communication, so taking the route of the more I contact the better possibility of someone seeing my question.... Thanks in advance.... I have the same exact truck and get 10 at best anywhere I go.....Have done zero mods to truck... but with the price of gas how do I keep driving this thing and not go broke????

 

298,000+ miles with a 4/6 drop, k&n air system, custom lights front and back, piller gauge pod, new fenders, cab corners etc, grille and bumper cover sitting in my living room Other than new plugs wires and map sensor..engine is untouched. 1990 c1500 454ss with factory installed 350... vin comes up as 1 of 2 for that year.

 

195,500 miles on the 94 GMC Sierra SLE 5.7L 4l80e 20 inch rims with Nitto tires, Tinted windows, Just had transmission rebuilt. 10 mpg anywhere I go....yeah that sucks! Looking to get better gas mileage>>>

 

1997 Silverado extended cab (375000 mi)

 

1999 GMC Z71 SLT, new body style, 248,000 miles, original motor and trans, 18 mpg on hwy, stock except for some cosmetic add ons and a flowmaster muffler w/ dual tips, also has some Couragia M/T tires, gets me to work 45 minutes each way every day!

 

My Chevy is a 1988 1/2 Ton Stepside Shortbox 4x4 Silverado with about 67,000 original miles. I purchased it from the original owner, who bought it new at 72 years old and drove until his family took it away at 92. It came with the 350 and every availible option, from what I can see.

I added a constant-on isolater curcuit and a second battery to support the 9,000 lbs winch, mounted on the custom built front bumper with brush guard. There is a 2,000 winch mounted on a tower frame that surrounds the hatch window on the back of my custom built Super hawk canopy. I tightened the torsion bars to make of for the weight of the battery, front bumper and winch.

Inside the canopy is found the usual collection of chains and pulleys for recovery operations, as well as a fold-down bunk/bench seat with interior lighting. I've slept back there through many storms.

Under the hood I gutted the smog pump and lost the plumbing. I plated over the EGR and replaced the cat with a 3 inch pipe fitted into the flowmaster 3 inch single exhaust. I like dual pipes, but up in the woods single pipes just seem to last longer.

Tires are the Les Schwab Tall, Skinny, and Chunky's. It has had Aircraft Landing Lights and 50 watt fog lights on the front and a pair of 50 watt floods on the back.

I raised the TBI with a 1 inch swirl block and lifted the injectors with a 1/4 inch kit. I set the ignition at 6 degrees. I am still argueing with my neighbor, and have chosen to retain the original air cleaner housing because they just do a better job and I have no evidence of air flow issues...I can still draw zero inches of vacum at 5 grand, and work mainly in the torque curve up through the late teens and mid twenties. It isn't a drag racer, it's a truck.

I just lost my 700R4 yesterday....3rd went out; I still was able to fourwheel out in 1st & 2nd...and have started shopping for a replacement.

 

1990 Suburban, 3/4 ton, 454 cu.-inch (7.4 L), 3.73 axle, installed GearVendor Overdrive. Odometer: 145,000. Mileage (approx.) 8.5 mpg highway while towing, 12.5 highway solo, and 9.0 around town solo.