5.7L Vortec vs. 5.3L Vortec
I currently tow with a 2002 Avalanche 1500 with a 5.3L. I am looking to get a 3/4 ton tow rig to better handle the TT and our gear. I have a line on a 2000 Chevy CCSB K2500 with a 5.7L Vortec/4L80E,...
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There have been several times I have had the Av spun up to 3500-4000 RPM on a long steep hill, and while that is within the operating range, it is too high for my comfort level.
I would love to trade it in on a Duramax or Powerstroke, but I do not want a vehicle payment on a truck that sits 80% of the time (I have a company car). If I end up with the 5.7 truck, it will get intake/exhaust and maybe a cam in the future. The 80e is a good trans, much more HD than the 60e. It is supposedly a rust free truck, and the engine/trans were rebuilt approx. 50k ago.
I'm familiar with the shortfalls of the treefiddy, and find them easier to work on than the newer LS engines, and much easier than a modern diesel.
My TT is an Aerolite, which IIRC is lower profile than most others.
Edit: Found out it has 3.73s. I was hoping for 4.10s. The Trailer Life guide for 2000 says a 3/4 ton 4x4 with the 5.7 and 3.73s is rated for 6800lbs, while my Avalanche with 3.73s is rated for 7k. Doesn't make much sense, but I would think a 3/4 ton leaf-sprung truck would handle the weight better.
I would love to trade it in on a Duramax or Powerstroke, but I do not want a vehicle payment on a truck that sits 80% of the time (I have a company car). If I end up with the 5.7 truck, it will get intake/exhaust and maybe a cam in the future. The 80e is a good trans, much more HD than the 60e. It is supposedly a rust free truck, and the engine/trans were rebuilt approx. 50k ago.
I'm familiar with the shortfalls of the treefiddy, and find them easier to work on than the newer LS engines, and much easier than a modern diesel.
My TT is an Aerolite, which IIRC is lower profile than most others.
Edit: Found out it has 3.73s. I was hoping for 4.10s. The Trailer Life guide for 2000 says a 3/4 ton 4x4 with the 5.7 and 3.73s is rated for 6800lbs, while my Avalanche with 3.73s is rated for 7k. Doesn't make much sense, but I would think a 3/4 ton leaf-sprung truck would handle the weight better.
