15 posts - 13 authors - Last post: Dec 28, 2006If I go with the 4.8 I can order the 3.42 axle ratio over the 3.73 that comes with the 5.3. thinking about fuel economy as I am empty 80% of .

14 posts - 11 authors - Last post: Mar 5, 2008I notice that more of them have the 4.8 in it other then the 5.3. . . load easier and consistently got better fuel mileage than his did. .

295-hp 4.8-liter V-8 (regular gas) 315-hp 5.3-liter V-8 (flexible; E85) . Fuel Economy City, 14 - 17 mpg, 12 - 15 mpg, 11 - 17 mpg. Fuel Economy Highway .

2 answers - Nov 4, 2009Lastly both the 4.8 and 5.3 had trouble staying in OD on the interstate. .

39 posts - 25 authors - Last post: May 16, 2006[Archive] 4.8 vs 5.3 INTERNAL ENGINE MODIFICATIONS. . I'm thinking the 4.8L is there for the average fuel economy thing, .

9 posts - 8 authors - Last post: May 8, 2008Those trucks are geared for fuel mileage, but there was an optional . The same cannot be said for the 5.3/4.8 vs. the 4.3 six cylinder. .

Feb 13, 2011 . There's a flex-fuel, 302-hp 4.8-liter V-8; a flex-fuel 5.3-liter V-8 with 315 hp and cylinder deactivation for improved fuel economy in XFE .

18 posts - 17 authors - Last post: Dec 28, 2010The fuel mileage rating is only 1 or 2 miles difference. . 5.3 sucked fuel, but it was 4x4. 4.8 did ok, but not too much power. .

12 posts - 10 authors - Last post: Jan 6I've always towed with my Silverado 4.8L, pulling a 20ft Triton. .

Nov 19, 2007 . Silverado 4.8L vs. 5.3L? - AR15.Com Archive - AR15.COM. . I'd go 5.3. More power, and pretty much same fuel economy as the 4.8. .

5 posts - 5 authors - Last post: Mar 16, 2008I know a 5.3 is a stroked 4.8 but how big is the difference in performance and fuel economy? I don't plan on hauling much but I'll need a .

8 posts - 6 authors - Last post: Feb 15, 2010A 98+ model vortec 350 or 305 would also work with your currect ECM. It would be short on horses and fuel economy from the 4.8 or 5.3 though .

May 30, 2011 . The new, more-aerodynamic XFE (Xtra Fuel Economy) model, only available in ½-ton 2WD Crew Cab equipped with the 5.3L V-8 and 6-speed .

Jul 28, 2010 . Vortec 4.3L V-6 (LU3), Vortec 4.8L V-8 FlexFuel (L20), Vortec 5.3L V-8 FlexFuel (LMG). Type: 4.3L V-6, 4.8L V-8, 5.3L V-8. Displacement (cu in / cc): 262 / 4300 . EPA estimated fuel economy (city / hwy): 2WD: 15 / 20 .

Jan 30, 2011 . 2.5L Iron Duke. Join Date: Jan 2011. Posts: 20. 4.8/4 speed vs 5.3/6 speed . Posts: 20. Fuel Economy for 6.0L gas engine on 2011 sierra hd .

32 posts - 14 authors - Last post: May 6, 2009[Archive] 4.8 vs 5.3 GM Gassers. . However, they didn't get the fuel econ that the 4.8 got, but they have both been in 4X4s. One had a .

Jan 13, 2011 . People generally say the v8s get almost as good fuel economy. . In regard to the new Truck V-8's I would either do the 5.3 or 6.0 and I .

20 posts - 13 authorsPage 2- Smaller V8 Pickups (4.8 vs. 5.3 etc.) and tow rig questions Tow rigs and trailers. . GM must do a poor job at calculating their avg fuel economy, .

10 posts - 6 authors - Last post: Mar 20, 2000Both the 5.3l and 6.0ls torque drops off, while the 4.8l still hovers. .

What is the fuel economy for a 2010 chevrolet v-8 camaro ss? . 4.8 for 3 mpg higher but 50 less horses and 5.3 with 3 less mpg but 50 more horses .

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Sep 26, 2007 . A 25- or 30-percent rise in the Silverado's MPG average would have . Vortec 4.3 liter V6; Vortec 4.8 liter V8; Vortec 5.3 liter V8 (iron-block, . .. If your truck has an instant fuel economy gauge, use it all the time .

20 posts - 7 authors - Last post: Apr 20Sounds like the ideal might be a stock 4.8L or 5.3L with a takeout . would be a good combination fuel economy/power/cost effectiveness. .

Nov 8, 2006 . Agree with R A. There's not much difference in the fuel eco between . PM Submitted by scwildbill (198.253.25.51) from AL says 4.8 vs 5.3 .

13 posts - 12 authors - Last post: Jun 6, 2007If you're thinking fuel economy, then I would go for the 4.8 or the 5.3 in the GM full size. A lot of people have reported to have the same .

Most 1500 models are powered by either a 4.8L V8 or 5.3L V8. . segment-best fuel economy with a new six-speed automatic that is paired with V-8 engines .

18 posts - 5 authorsThis thread has quickly become a 4.8L vs 5.3L battle to see which one makes . more to get a 4.8 to do that then a 5.3. he will have the same fuel economy, .

10 posts - 8 authors - Last post: Apr 8, 2000Silverado 4.8 vs. 5.3? discussion in the car forums by Edmunds.com. . Family and Car Safety · Fuel Economy & Green Cars · Car Technology .

10 posts - 6 authors - Last post: Mar 20, 2000Just by the graphs, the 4.8l looks like a better choice. . Get the 5.3L it is a no brainer. The fuel mileage ratings between the two are .

6 posts - 5 authors - Last post: Sep 1, 2008should I look for a 5.3 or is the 4.8 ok? I probably wont be towing anything to big. but is the 4.8L underpowered? what about fuel economy?

17 posts - 10 authors - Last post: 6 days agoSilverado 1500 Classic 4.8L (Regular), Sierra 1500 5.3L (Regular), . .. What is the fuel economy like on the 5.7L? It is very hard to match .

4.8L and 5.3L engines have variable valve timing, a feature that improves performance and fuel economy. Regular and Extended Cab trucks with 5.3L V-8 .

10 posts - 8 authors - Last post: Jun 21, 2009Big difference 4.8 vs 5.3? lookin at gettin a new rcsb prolly 06-07. how . . the 4.8L and the 5.3L in all aspects including fuel economy. .

With the 4.8-liter V-8, Sierra 1500 ratings were 14/19 with 2WD and 14/18 with 4WD. Fuel economy ratings for the 2011 GMC Sierra 1500 with the 5.3-liter V-8 .

9 posts - 5 authors - Last post: Dec 27, 2009am thinking of getting and vortec 4.8 or 5.3 engine for my cutlass . but the fuel economy may be worth the tradeoff depending on how you .

10 posts - 6 authors - Last post: Mar 20, 2000Both the 5.3l and 6.0ls torque drops off, while the 4.8l still hovers. . Get the 5.3L it is a no brainer. The fuel mileage ratings between .

10 posts - 5 authors - Last post: Apr 1, 2010Sanny do yourself a favor and get the 5.3 in a crew cab the ext wont cut it .

10 posts - 9 authors - Last post: Oct 21, 2010Page 2- DYNO GRAPHS - Stock '02 4.8L vs 5.3L V8 motors GM Engine .

19 posts - 19 authors - Last post: Nov 26, 2005[Archive] 4.8 vs 5.3 mpg General GM Discussions. . CantKillIntegrity. 11-16- 2005, 06:20 PM. RCSB 5.3L 18 City/20 Highway on Chevron fuel. .

10 posts - 8 authors - Last post: Apr 27, 2007I cannot coment on the towing of the 4.8, but my 5.3 tows great. . a slightly larger bore (290 vs 323-325) and the stroke (83mm vs 92 mm). .

Mar 25, 2011 . The 4.8- and 5.3-liter V-8 engines have been enhanced with variable valve timing for improved emissions and better fuel economy. .

10 posts - 5 authors - Last post: Mar 20, 2010I own a 5.3 and my father owns a 4.8 both in 2wd extended cabs and you can hardly tell a difference. . . fuel mileage silverado 4.8 vs 5.3 .

10 posts - 9 authors - Last post: Jun 12, 20104.8L vs 5.3L The Lounge. . but not one I'd recommend for fuel economy .

8 posts - 8 authors - Last post: Apr 8, 20074.8L vs. 5.3L Silverado Car Forums. . I don't think you could possible tell the difference fuel mileage wise between the two. .

19 posts - 10 authors - Last post: Jun 2, 20104.8 vs 5.3 Chevy Engines General Discussion. . you'll be hard pressed to find a better motor(5.3) that combines power/fuel efficiency. .

9 posts - 7 authors - Last post: Jun 15, 2007A V6 Tacoma isn't going to save you much fuel vs. a full size truck. . 295 hp / 305 lb-ft for the 4.8L, 315 hp / 338 lbft for the 5.3L. Fuel economy . speed auto, further increasing fuel economy with the 5.3 cd. .

10 posts - 9 authors - Last post: Mar 5, 2002DYNO GRAPHS - Stock '02 4.8L vs 5.3L V8 motors GM Engine .

Just for kicks, GMC Yukon and Yukon XL vs. Hummer H2, Honda Odyssey, . All 2003 Yukons, XL or not, with 4.8 or 5.3Ls, 6 and 8L, get around 3, or 27.4-36.3 #/15000 mi . A Prius emits 3.5. http://www.fueleconomy.gov/feg/findacar.htm .

The 4.8- and 5.3-liter V-8 engines have been enhanced with variable valve timing for improved emissions and better fuel economy. Standard side curtain and .

10 posts - 6 authors - Last post: Jun 12, 2010anyone have opinions on the 4.8 vortec? is it worth the saved fuel? how similar is it to the 5.3? . Pretty good for power, but not one I'd recommend for fuel economy. Digg this Post! Add Post to del.icio.us · Bookmark .

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