Tom
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sunvalleyjoe
My rule has been 1/2 tow cap for weight of trailer. It has worked good for me last 40 years or so. Braking has always been my worst fear .GBA!!SVJ
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2ty
I'm pulling a 189R with a new F-150 3.5L 6cyl.  Depending on wind direction/speed, I get anywhere from 10 to 17 mpg.  On average, about 12½ mpg.
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Tom
So, I've got a few oil changes in on the '92 Suburban, K1500, 350 rebuild.  
Did a few upgrades with the rebuild, the cam for better low rpm power was the most significant.
Kept the pre-Vortec, "swirl port" heads for better fuel economy.
Getting 13-14 mpg regularly even in the mountains. 
Got 15 on the last trip here in flat Florida/Georgia, 60 mph, couple of 30+ gallon fill ups.
Pretty pleased with the result.   🙂
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Roccosamore
Doesn't sound bad. My 1990 Suburban engine was rebuilt with 1995 Vortec heads and kept the TBI. I am at about 11 mpg with the 177SE. However, now we sold it and just got a 2017 Rockwood 2280 BHESP tent trailer. I am hoping to bring that number up to 13 - 14 mpg. We'll see...
Rocco
2015 177 SE
1990 Chevy Suburban 5.7L
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sunvalleyjoe
did you have a good winter? My sister in law was stuck in her yard at Cottage Grove with all the snow about 3 days. We might be up that way in July. Planning on trout opener for Hat Creek next week hope the weather holds. Stii 10 feet plus on Donner Summit. One heck of a winter take care. GBA!!SVJ
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Roccosamore
Let me know if you come this way. We just came through Hat Creek last Monday. It was flowing pretty high.
Good luck!!
Rocco
2015 177 SE
1990 Chevy Suburban 5.7L
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