Mileage of 4.8/5.3/6.0

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04-08-2011, 07:59 AM

#11

OneQwikSS

formerly 2004RST (changed 11/19/2012)

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what year/model 6.0 do you have bolted to your t56? the 4.8 is terrible on gas....i'm gettin 14 mpg out of mine drivin around town right now >:O $75/week right now

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04-08-2011, 08:14 AM

#12

dug

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gearing should be fine with .5 overdrive of the 6speed.

yeah 243 heads or some massaged aftermarket. Raising the compression 1point gives 4-5% more hp everywhere in the powerband.

I am assuming you have a lq4

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04-08-2011, 06:17 PM

#13

DAH32

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Quote:

Originally Posted by bardo

I would bring that rear gear down some depend on the tire your running

I run a 29" tall tire....275 - 45- 20.

I cruise at 55 at about 1500 to 1600 rpms.

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04-08-2011, 06:18 PM

#14

DAH32

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Quote:

Originally Posted by 2004RST

what year/model 6.0 do you have bolted to your t56? the 4.8 is terrible on gas....i'm gettin 14 mpg out of mine drivin around town right now >:O $75/week right now

I believe I have a 02 6.0.....lq4.

I drive about 40 miles a day....two lane blacktop......about 75 dollars a week.

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04-08-2011, 06:20 PM

#15

DAH32

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Quote:

Originally Posted by dug

Yes..its a lq4.

Interesting....would the 243's still allow for 87 octane to be used?

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04-08-2011, 07:41 PM

#16

silverado1ss89

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Quote:

Originally Posted by 2004RST

what year/model 6.0 do you have bolted to your t56? the 4.8 is terrible on gas....i'm gettin 14 mpg out of mine drivin around town right now >:O $75/week right now

The 5 speed helps you a little better... I get 12 mpg around town $80 a week.. On 275 55 20...