The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - Whats your impression of a 5.3L LS motor in these trucks?

**CC69Rat** · 11-19-2012, 07:40 PM

My GMC sees maybe 1800 RPM if that (right now) Maybe some cones later but .. Definitely not the drag strip. Most of the time it's putting down an old back country road with my arm on the door frame. 3:08 geared, 255hp 350 with a 3OTT and 55mph. I'm getting 20mpg, minimum.

11-19-2012, 07:40 PM	#103
CC69Rat Senior Member Join Date: Jan 2011 Location: Chattanooga TN Posts: 6,205	Re: Whats your impression of a 5.3L LS motor in these trucks? My GMC sees maybe 1800 RPM if that (right now) Maybe some cones later but .. Definitely not the drag strip. Most of the time it's putting down an old back country road with my arm on the door frame. 3:08 geared, 255hp 350 with a 3OTT and 55mph. I'm getting 20mpg, minimum. __________________ Chad 1967 C10 SWB - Project Savannah - 6.0/4L80 Currently underway 1968 C10 SWB - TOTY 2018, 50th Anniversary Tribute Project * Sold * Pride and Joy 1986 Silverado Short Fleet - Scarlet Sold 1985 Silverado Short Fleet Sold 2022 Jeep Gladiator Mojave 2001 Jeep Cherokee XJ 4x4 - Lifted, Built 1992 Jeep Cherokee XJ 4x4 - Lifted 2013 Honda Accord EX-L v6 Coupe 6spd (wife's ride)