5.3 or 6.0 Conversion

[N2TRUX]

Originally Posted by veinbar

If 17 mpg is the average one can expect from this swap then why is it so popular? Would this average be for a carbureted or fuel injected LS? I too have considered this swap, but I'm weighing the cost/benefit ratio...

That average would be for a bone stock 5.3 in my late model truck. Why is it popular? Because there are a gazillion LSx motors out there that can be had for very little money. They are very reliable, long lasting and can produce a LOT of power if you want them to.

If I were going to do an LSx swap, I would find a 6.2L . They are the best bang for the buck even if you pay a bit more for them.

[camshaftgsxr]

Originally Posted by N2TRUX

That average would be for a bone stock 5.3 in my late model truck. Why is it popular? Because there are a gazillion LSx motors out there that can be had for very little money. They are very reliable, long lasting and can produce a LOT of power if you want them to.

If I were going to do an LSx swap, I would find a 6.2L . They are the best bang for the buck even if you pay a bit more for them.

another thing is the "cool" factor, my girlfriends dad has a 6.0 cadillac h/o motor with a tune and a cam pushing 450hp (enough to beat a gt mustang in a 64 panel truck)

[BigBlocksRule]

Originally Posted by N2TRUX

If I were going to do an LSx swap, I would find a 6.2L . They are the best bang for the buck even if you pay a bit more for them.

Hell, yeah! They can be stroked to 426 cubes and make massive power. The square port heads flat-out flow!

pumpgas left out my favorite combo: 4.125" bore x 4.00" stroke for 427 cubes of butt-puckering power!!!