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Re: How to optimize a RCSB for gas mileage
I have owned several 4.3V6 and a 4.8 V8 ones. With today's ethenal gas, seeing 20 is possible, but a little tuff. I loved them as DDs. For best gas mileage, keep the skinny factory wheels and tires. I had 8" wheels and 265/70 tires. I liked the ride and handling, but it will eat a bit into the MPG. AS mentioned a 4.3 V6 and manual will give you the bext chance of MPG. Most trucks came with a 3:42 rear gear with the V^ till aroun 2005, then they went to 3.23 gears. As far as automatics, my 4.8 V* one ended up with the best MPG average consistently.
My 92 V6 w 5 speed average 21 MPG Hwy (for whatever reason in Colorado Springs/Denver I averaged 23-24)
2002 V6, 3.42 gears 20 MPG Hwy
2007 4.8 V8, 3.23 gears 21-22MPG
2006 V6 3.23 gears 21 MPG
Now Highway for me is 70-80, mostly flat land.
I miss my RCSB truck. Love them as a daily, and they are getting harder and harder to find.
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