I'm getting 5.0 to 5.6 out of the truck in the sig pic playing around at 60 mph in the Adirondacks with 3.90 and a 15 over. I bet I could nudge 6.0 with a 13 or 18.
3406c 3.55 rears 15 speed...mpg?good motor?
Discussion in 'Trucks [ Eighteen Wheelers ]' started by favored, Jun 1, 2011.
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Page 5 of 5