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Thread: Silverado 5.3 Gas Mileage
09-14-2012, 10:01 AM #11
with my 02 silverado 2 wheel drive. 5.3L, 3.43 rear end. stock except a jet power programmer and k&n filter. I used to get 24-26mpg on the highway doing 72mph with the AC on. If I sped up to 80-85mph it would drop to about 20mpg. This was all hand calculations as the truck did not have a DIC with avg mpg readout
Last edited by Pikey; 09-14-2012 at 10:12 AM.
1995 Silverado 4x4
6" BDS Suspension Lift-3" Body Lift-Add A Leaf in rear -Trailmaster SSV Shocks-Duel Steering Stabilizer Kit -AirAid Cold air intake-
4.56 Gears with Detroit Auburn Locker-Pro-Comp Traction Bars with duel shocks-Aluminum Skid Plate Kit-38.5" x 16.5" Mickey Thompson Baja Claws-Constant Dropping fuel gauge
2005 Yukon XL Jet Power Programmer, Bilstein Shocks, Bilstein rear springs, Helwig Anti-sway bars, EGR Window Visors, EGR Hood Shield, Denali Headlights, Headlight harness upgrade, GE NightHawk Bulbs, White Night Rear lighting system http://www.gmtruckclub.com/forum/sho...5-GMC-Yukon-XL
2002 Silverado ext cab 2wd (Sold)
2003 Yukon XL (Totaled)
09-14-2012, 10:02 AM #12
- Join Date
- Jun 2006
- River Ridge Louisiana-4 miles W of New Orleans-didn't flood-water stopped 800 yards away.
17-18 mpg at an honest 80 mph- is GREAT!
25 mpg at 80 mph- is the best SBC numbers at 80 mph that I've ever heard of.
What is you actual "tank" mpg 4.8 vs 5.3 ?
Not what the NAV system tells you- but actual calculated mpg-distance traveled from trip meter divided by gallons pumped in.
I don't have a 5.3 or 4.8- but I'm a mpg NUT.
And in general the 5.3(same year motor vs same year motor) gives the same mpg as the 4.8-the same or so close as to not matter.
Now GM did improve the mpg every few years-so maybe the 2007 4.8 had a slight mpg over the 2004 5.3- but I wouldn't guess it to be 7 mpg better-maybe 2-3 at best.
I would check actual mpg-manually calculating it for several tanks. If you get 15 mpg in mixed driving-you are doing OK.
Did you ever actually measure the mpg on the 4.8-not NAV numbers-actually hand calculate it?
Don't trust the NAV numbers
In any case 17 mpg at 80 mph-awfully good! 25 mpg at 80 mph-I wouldn't trust the NAV if it told me that.
09-14-2012, 11:04 AM #13
09-14-2012, 11:10 AM #14
09-14-2012, 11:12 AM #15
09-14-2012, 11:17 AM #16
09-14-2012, 01:47 PM #17'07 Chevy Silverado Classic
-Air Raid Throttle Body Spacer
-Bully Dog Triple GT Programmer
-3" Spindle Lift
-Blacked Out Rims
-Blacked Out Taillights
-2 Kicker CVT 12s
-Rockford Fosgate 6.5"
-500 Alpine Mono Block
-Pioneer 6.5" Touch Screen
-2 Boss Tweeters
09-14-2012, 02:39 PM #18
- Join Date
- Mar 2007
- Grand Prairie, Texas
- Blog Entries
Aviation Electronics = Rating
Are you going as an AE = Aviation Electrician
Or an AT = Avionics Technician
Big difference between the two skills although they work side by side and in the same shop most times.
Before the end of boot camp you'll be expected to know the difference between Navy rating and Navy rank, the different insignias for each each rate, the basic job each rate does, and the different ranks.
Another member on the site Rileyjr16 will be leaving for Navy boot camp in a few days.
I retired USN with 25 yrs active duty, in as an E-1 out as a CWO4, held every enlisted rank from E-1 to E-9 (a couple I had the distinction of holding more than once unfortunately) before going CWO. Enjoy it's a great job and you'll learn and see more in any one year on active duty than you would in 5 years of civilian life.
09-14-2012, 02:52 PM #19
I'm on Airman Pact but I'm gonna push for AWS (Helicopter Aircewman). I'm leaving Tuesday for the hotel and going to MEPS and airport Wednesday and get there early Thursday AM I think. If I like it I'll put in 20 years worth.
If at first you don't succeed, chances are, you are using too small of a cheater bar
1999 GMC Sierra SLT Z71 | 5.3 Vortec | Spectre Cold Air Intake | TransDapt TBS | Hypertech 30005 Tune | 2005 Chevy Tails | Denali headlights | AWS Bug Shield | 265/75/16 Mastercraft Courser A/T | "Ghetto" painted tailgate | Boss HD Speakers | 2005 Overhead Console | Dual Thrush Turbo Mufflers
Bigger Amp Alternator | Electric Fans | Oil/Trans Fluid cooler | Re-done exhaust | Paint | Interior Restoration/upgrade with newer model stuff | Window Visors (In channel) | Tint | Low-Profile Tool Box | LEDs throughout stock cab locations | And whatever is spurr of the moment
US Navy Sailor :sign0011:
09-14-2012, 03:41 PM #20
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