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Werewolf · 01-08-2006, 03:18 AM

I know I'm late on the reply to this thread, but I'd tell him to stick with the 8.1. I don't know about the wiring, but I know the 8.1 has a completely different intake and (I think) exhaust. I explored the possibility of sticking one in my 1500 Silverado, 5.3 powered. The 4.8, 5.3, and 6.0 are all pretty much the same, but the 8.1 is different. I don't know that he'd see any mileage difference, anyway. My truck's a 4x4 with a 3" lift and 33" tires and it's only pulling 15mpg on the highway. All he'd be doing is giving up power, IMHO.

01-08-2006, 03:18 AM	#5
Werewolf Woof? Join Date: Jun 2005 Location: Raleigh, NC Posts: 276	Re: Chevy Engine Swap from 8.1 to ??? I know I'm late on the reply to this thread, but I'd tell him to stick with the 8.1. I don't know about the wiring, but I know the 8.1 has a completely different intake and (I think) exhaust. I explored the possibility of sticking one in my 1500 Silverado, 5.3 powered. The 4.8, 5.3, and 6.0 are all pretty much the same, but the 8.1 is different. I don't know that he'd see any mileage difference, anyway. My truck's a 4x4 with a 3" lift and 33" tires and it's only pulling 15mpg on the highway. All he'd be doing is giving up power, IMHO.