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feller · 03-02-2011, 10:34 PM

did not read everything so sorry if i missed it but in a 4x4 can i expect to get better MPG's with an ls or lt swap? someone told me that in a 72 with a 355 and an edelbrock carb that would probably be as good as it gets, but i can not hardly belive that with 6.0's and 5.3 getting 15+ mpg in a new truck it has to get better than an old 355 ( mabey not)

03-02-2011, 10:34 PM	#149
feller Registered User Join Date: Feb 2011 Location: madison, IN. Posts: 484	Re: LS engine swap info did not read everything so sorry if i missed it but in a 4x4 can i expect to get better MPG's with an ls or lt swap? someone told me that in a 72 with a 355 and an edelbrock carb that would probably be as good as it gets, but i can not hardly belive that with 6.0's and 5.3 getting 15+ mpg in a new truck it has to get better than an old 355 ( mabey not)