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northerngmc · 08-31-2010, 10:45 AM

Yes many on here have swapped in a 5.3 LS engine and add the 4L60 transmission with overdrive and they claim they are getting over 20 mpg. And that is with their tiny little US gallons, EH!

Here is a thread on an installation for you to read. http://67-72chevytrucks.com/vboard/s...d.php?t=244448'

There is even a special forum right here now for LS swaps..... http://67-72chevytrucks.com/vboard/f...prune=30&f=206

08-31-2010, 10:45 AM	#3
northerngmc Registered User Join Date: Jan 2004 Location: Whitehorse YK Canada Posts: 2,651	Re: Engine swaps Yes many on here have swapped in a 5.3 LS engine and add the 4L60 transmission with overdrive and they claim they are getting over 20 mpg. And that is with their tiny little US gallons, EH! Here is a thread on an installation for you to read. http://67-72chevytrucks.com/vboard/s...d.php?t=244448' There is even a special forum right here now for LS swaps..... http://67-72chevytrucks.com/vboard/f...prune=30&f=206 __________________ Blaine 59 GMC 9314 a.k.a. Whoopee 68 C20 50th Anniversary a.k.a. The Rat http://www.flickr.com/photos/northerngmc/ http://www.members.tripod.com/P-wee/index_032.htm 1.61803 is one H of a lot better than 3.14159, no really it is!