Is the crank shaft the same a 4.8 /5.3 /6.0?
what is the bore of these engines? stroke?

 

4.8 has a shorter stroke than the 5.3, 5.7 and 6.0. THe other 3 motors all have the same stroke, but are not the same crank. They all are different parts to balance with the different pistns. The rod length on the bigger 3 motors are the same as well, but the 4.8 has a different size rod.

 

are 5.3 and 6.0 crankshafts interchangeble

 

Yes, but would need to be rebalanced.

I think I know what your getting at, and it would be cheaper and easier to go with a 2001+ motor than make a pre 2001 6.0 work unless you are just being given the 6.0

 

Well A Friend Has A Good 2000 6.0 Engine That He Will Sell Me Cheap, I Have An 2002 6.0 That Had A Wrist Pin That Froze Up In One Cyclinder And Scratched The Cyclinder Wall A Little ( I Just Bought IT For The Heads) May Be I Could Make One Out Of Both Of Them???
Or What Would You Recomend

 

5.3, 5.7, and 6.0 have 3.622" crank, the 4.8 has a 3.268" crank

 

Depending on the scratch depth you could have the 2002 block bored out +0.030, 0.040, or even 0.060". Lots of piston/ring kits available for the 6.0L overbore sizes or even go all out with a full rotating assembly for your "new" 408 ci stroker! Checkbook will be the final decider...