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11-04-2008, 04:26 PM #1
- Join Date
- Nov 2008
- Northern California
Is there much of difference in mpg between a 4.8L and 5.3L?
I just bought a 2008 Silverado LS with the 4.8L V8. Considering I wanted to add a camper shell, bedliner, rear sliding window, 6" assist steps, and lockable tailgate... I had less money to work with. Originally, I wanted to get the 5.3L, but after adding in the options and tax/license fees, I was pushing my original budget.
My question is, is the long run, would the 5.3L with the Active Fuel Management save me a lot more fuel and money? It's pretty much too late now since I already bought the truck, but I'm just curious.
I don't really plan on using the truck as a commuter. It's mainly for weekend house projects, and a backup vehicle in case my reliable Honda ever does die out on me.
11-04-2008, 04:35 PM #2
im not exacly sure on that I have heard that it is not all that helpfull
it dosent switch to 4cylinders when idiling,or stopped at a light which would be helpfull.Ryan
2002 Jeep Wrangler Sport 4x4 (the Yellow Jacket)
4inch suspension 3inch body
Straight 6 (383 Stroker within a year)
36inch SuperSwamper TSL.
Daily Driver Weekend Wheeler
2004 Sierra crew cab, 2wd, 5.3 V8
2inch Daystar Leveling kit
single dumped Flowmaster 40 sieries exaust(removed)
Mb Blitz Chrome wheels
Leer Bed Cover(for sale)
11-04-2008, 04:43 PM #3
Probalby wouldn't save you all that much. The AFM goes back into V8 mode when it senses 6% throttle which is all the dam time. You can tune for it to stay on longer or turn it off.2008 Silverado 1500 Ext Cab 4wd LT1 Package with 20" wheel upgrade,K&N CAI, Magnaflow Catback Dual Side Exit, Tuff Country 2" Leveling Kit, Blackbear Tune, 6k HIDS Low and High Beams, 3K HID fog lights, LED tailight bar
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