Opinions on replacing a 454 with an ls. - The 1947 - Present Chevrolet & GMC Truck Message Board Network

79c25 · 02-06-2015, 05:32 AM

Ok so I have been thinking about replacing my bbc with a ls engine but I'm lost on which one would be the best for daily driving with towing occasionally or losing the 3/4 ton capability. I already know that I want either a 4L80E or a NV4500 in it but I can't decide if the 5.3 would be fine or if I should go with a 6.0. I also know I can put a supercharger on the 5.3 and make a good amount of power but that's just more money out the door. Either way I will at least double the current MPG which will make my wife happy.

02-06-2015, 05:32 AM	#1
79c25 Registered User Join Date: Jul 2014 Location: Lovell WY Posts: 93	Opinions on replacing a 454 with an ls. Ok so I have been thinking about replacing my bbc with a ls engine but I'm lost on which one would be the best for daily driving with towing occasionally or losing the 3/4 ton capability. I already know that I want either a 4L80E or a NV4500 in it but I can't decide if the 5.3 would be fine or if I should go with a 6.0. I also know I can put a supercharger on the 5.3 and make a good amount of power but that's just more money out the door. Either way I will at least double the current MPG which will make my wife happy. __________________ 1979 GMC Sierra Grande Crew Cab C25, 454/TH400/4.10-Project truck/ DD 1985 Chevy K5 Blazer 700r4/4.10/8 lug- in search of new engine 1993 GMC Sierra K1500 4L60E 2007 Suzuki Forenza- her DD and the family vehicle



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