13.85 Mpg!

[rambler]

Originally posted by nroden
New record for my 72... 15.38 MPG. I track this using the fuel logbook on Missourigasprices.com after writing down all the info in a little notebook I keep every time I get gas.
I drove from the Pamida store where I work in Lexington MO to the Pamida store in Trenton MO (its the ultimate of all Pamida stores... at least in Missouri.... never was a Places) The trip was
mostly highway going aprrox 50-55 MPH. Filled up at the gas station real close to store and drove up, went to Taco Bell across from Pamida, and then drove about the same distance back except on another highway. Went home and then filled back up the next morning. I am wanting to do another trip someday, on flatter road, all HWY and see what it gets.

My gas mileage sucks,, but its a work truck and I love driving it, so its worth it... I really miss Pamida... they closed the one here in Holden awhile back..

[1-PU70]

I get 13.5 with mine and thats towing. Gross weight over 9000lbs. 70 C10 with a long bed, PS,PB,AC,Auto-700R4,HEI,373Posi, 31"tires and of corse a 402. Goes like hell but dont stop that great. I average 70 to 85 mph and pulled Mount eagle over 70. You got to love the BB.

[pierce]

My Longhorn with original worn out 350/400TH auto and 410 gears gets alot better milage than my Blazer w rebuilt 350/350TH auto and 307 gears.

[shortymac83]

Originally posted by Longhorn Man
TX FIREFIGHTER...that just proves what I am always saying on here...lower RPM does not always equate to better MPG.
My GMC needs to run 75 - 80 to get the best numbers. Problem is, 75 - 80 is when the lack of aerodynamics really starts to hurt.
My engine is happy when it hits 3000 RPM. That is why I got such good MPG in the old longhorn. It was geared to where i was doing 3200 RPM right at 70 MPH.
I put that engien in the GMC with crappy 3.07 gears and my MPG went into the crapper. Down to 10 MPG overnight.

I can personally vouch for that. at 65-70 mph, my delta gets about 18 mpg. at 80-90 (about 1900-2000 RPM) I got a best ever of 24.3 mpg

[gregsplace]

I was wandering what mileage I'd get with a stock 402, 400th with 3.08 gears in a swb truck? Anyone running this combo?

[Budweis]

im getting about 9 mi gallon with unilite ignition and 650 double pumper and 4:56 gears with 33" tires.