MPG's for you auto vs manual guys, 350's only please.

[tanman_2006]

89 C2500 350 Getrag and 4.10's got 13mpg on rear 33x10.5's driven from the time I was 14-16

95 K1500 305 4L60 and 3.42's got 21 on highway from the time I was 16-24. It got 18 if I took off like and idiot but cruised great.

I bet 3.42 and a NV4500 would be perfect.

 

[5spd Z71]

TBI 350, nv3500, 3:42 gears. 265/75/16 tires. Depending in how I drive, I can average 17-18mpg. "Winter" months are about 16mpg.


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[polar]

I haven't calculated mine but I'll be lucky to get 10mpg


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[SAATR]

'97 Suburban C1500. 18.5 highway and 15.5 combined with a 2600 stall converter and stock 3.42 gears. I think 20+ is doable with a custom tune and a few other mods.

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[slippy3002]

3.42 is a good highway ratio.

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[95C1500]

1995 5.7 350 4L60e 3.42's and 30's... 12-14 mpg...

 

[slippy3002]

That just isn't right Scott.

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[95C1500]

That just isn't right Scott.

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oh well lol...

 

[98chevyz71]

1998 Silverado Z71 3.73's g80 automatic 33/12.5r20 16mpg city 18mpg HWY

 

[Kyle97GMC]

97 Sierra auto, 5.7 350, 4l60e, 3.73s, six inch lift on 33s, Black Bear performance tune, HD trans cooler, corvette servo, full Replacement bumpers, headache rack, loaded tool box and I get anywhere from 10-13 city depending how I drive it