MPG on 4.8 Crew Cab
AdAmN20
04-09-2006, 10:09 AM
What kind of gas mileage are yall gettin on an 06 Crew Cab?
tykrz
04-09-2006, 11:30 AM
16 mpg city
21 mpg highway
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05 Z-71 ext cab
5.3L auto 4.10 gears 17" wheels
all stock
21 mpg highway
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05 Z-71 ext cab
5.3L auto 4.10 gears 17" wheels
all stock
KahneFan
04-09-2006, 11:33 AM
tykrz
04-09-2006, 06:17 PM
I think your problem is the 4.8L mated to 3.23 gears. Thats a lot of truck for that small engine to pull around compounded by that high gear ratio. Your engine is probably working double duty moving your truck around and operating well below its efficiency rpm range. I was told when I bought mine by the dealer sales people that I would do best with the 5.3L and 4.10 gears both in power and fuel economy. I'm glad I listened to them.
AdAmN20
04-09-2006, 09:54 PM
What about if I put 3.73 pos. trac in it ? Would that help much ?
KahneFan
04-09-2006, 10:14 PM
Would it be cost effective to replace the 3.23 with a 3.73 or 4.10?
Keep in mind, every MPG difference for me makes about $270/yr difference. So, if I could get another 2MPG over 4 years, that would be about $2160.00 (ish)
Keep in mind, every MPG difference for me makes about $270/yr difference. So, if I could get another 2MPG over 4 years, that would be about $2160.00 (ish)
AdAmN20
04-09-2006, 10:22 PM
How much you reckon it would cost to put the 3.73 in it ?
KahneFan
04-09-2006, 10:32 PM
That's what I'm not sure of. Maybe I'll call a dealer and see how much it would cost tomorrow. Not only that, but how long do I plan to own this truck...
tykrz
04-10-2006, 06:31 AM
probably cost 1600 minimum plus labor and thats just for gears, positrac carrier extra
Nigel215
04-10-2006, 10:08 AM
probably cost 1600 minimum plus labor and thats just for gears, positrac carrier extra
seems expensive. u talkin about having a dealership do it? I just got a whole new rear put in, Eaton posi, new gears, everything. only cost $1,200 from a shop.
seems expensive. u talkin about having a dealership do it? I just got a whole new rear put in, Eaton posi, new gears, everything. only cost $1,200 from a shop.
redneck45
04-10-2006, 11:27 AM
I get 17.5 highway, '99 4.8, 4x4 EC, 4:10 gears and 285 tires.
silverado122775
04-10-2006, 11:51 AM
I get about 18.5-19mpg. I have a 5.3 E/C and 3.73 gears.
TexasF355F1
04-10-2006, 07:33 PM
Don't ask.:grinno:
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