6.0 vs 5.3 swap

[1986brownjl]

I have a 85 k10 4x4 that I'm wanting to swap a 6.0 or 5.3 vortec. Can't decide which one I'm wanting to go with. I'm wanting to go with the 6.0 with 4l80e for power and torque but I'm considering the 5.3 because I have a 4l60e out of a 98 chevrolet Z71. Would the 98 4l60e work with a 5.3? The truck would be a weekend driver, towing every now and then. Any input would be great. Thanks.

[jessemthompson]

To be honest, you would be better off buying the drivetrain from one vehicle instead of piecing things together. Usually it is cheaper in the long run. 5.3 VS 6.0 is debatable, I would say for towing to go with the 4L80E. It is a much stronger trans.

[tmills213]

I just went through this. while I wont be towing, I kept with the idea of 3/4 ton for my c20. I bought an 02 2500 with 200K miles (little high maybe, ill find out shortly) but I payed $1800 and drove it home 30 miles.

I sold some key parts and an down to 1100 and have every possible thing I need. If I waited longer and had more room to let it sit I could have sold front fenders, headlights, seats, etc and got a little more back. I only waited about 2 weeks and wanted it out of my 2 stall garage. I would just look for a 6.0, then you'll never have to worry about it.

[Robznob11]

6.0 can also be upgraded more. It will accept all heads ( like the new square ports) but if your not into modding it out and max power both are stock performers. But as stated for towing the 80 E all the way .

[zach_carver]

MPGS from 5.3 will be better than a 6.0 IMO.. If that concerns you. Either will be better than carbed motor though.