RPM limits?

Burner said:
I wonder if anyone has ever sleved one? If they had, could they Nickel the sleve as well?
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The pro stock motors use Nicaseal , liners in them, and it’s a very expensive process , about $4000 to a block that starts out at $4000 and needs $4000 in work . The reason is ring seal, Ring seal is power, and the straighter you can make and keep the bores, the lighter your ring package and keep seal. A Cummins block is extremely hard and according to Ray harder and better then the DRCEIII Chevy pro stock block, which is cast by Caterpillar .

On RPM . I use stock rods and pistons and turn have turned 6000, but this last go round we put 30 laps on the motor and the bottom end looks new . I believe that RPMs are not a problem in the Cummins, and the higher you rev it the less chance you have to break things, the real enemy of the Cummins is low RPM power and the incredible cylinder pressure at these levels , this is unit load and this bends burns and breaks things
 
Comp.....just a guess, does that put ya around 13:1 running in the 6k range?
 
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