The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - Detroit Diesel 6v-71 MPG

marvgarr68 · 03-22-2015, 11:29 AM

A 6v71 is heavy and big would be a lot of fab to put in a truck. A 6v53 would be a better swap or a 4-53. As far as mileage probably around 8 mpg if your nice to it.

03-22-2015, 11:29 AM	#4
marvgarr68 Registered User Join Date: Jun 2013 Location: kingman az Posts: 573	Re: Detroit Diesel 6v-71 MPG A 6v71 is heavy and big would be a lot of fab to put in a truck. A 6v53 would be a better swap or a 4-53. As far as mileage probably around 8 mpg if your nice to it. __________________ 1976 k20, 350 built, 44/14 axles 1968 c10 6.5 turbo diesel,t5 trans 1977 gmc c3500 dually, crew, 4-53t, 5&3 trans http://67-72chevytrucks.com/vboard/s...d.php?t=591188