CK5
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i need more gas

I have the same truck (1999 ccsb w/ 454) but I only have a 19'ish gallon tank. What are the dimensions on your tank? Maybe mine is bigger than I think. :confused:

btw I get 10-11'ish average with 245/75-16 tires, got about 8 with 34x10.5 ltb's.
 
im not real sure on the dimentions.but ive put 21 gallons in it before :D i get like 7 pulling my pig and 2500 pound trailer on the highway.i have 285s and 373s but im about to go to 410s soon
 
here is what im working with right now


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this tank was partly used for towing
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here is how much it took
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the truck does have a small miss which i can figure out.if it sits for a week or so it will miss pretty bad upon start up then go away pretty fast.idles around 400 rpm.the truck has a new dist.,wires,plugs,air filter,fuel filter,ect
 
I decided to push my luck and went a little farther on my last tank, I stuffed 21.59 gallons in there. So I'm with you on the tank size. As far as MPG goes, you have me beat, I can barely squeeze 9 out of mine, but it's all city driving with short trips and no highway. I only travel 10 miles to work and 10 miles back.
 
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