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The crank was checked and grinded 0.010 , they did not use any balancer on the crank, why i dont know but i will get one, what do you think about these parts

1. 440 -73 motorhome block that i have
2. Crank , will any of these brands do the job, eagle scat or k1
3. Rods same brand with 0.99 pins
4. Pistons 8.5:1 ross je venolia or wiseco
5. Aluminium or steel main caps and does they need to be cross bolted, will aluminium caps make the block last longer and what is best for street driving.
6. Does it need a girdle

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Do not drill the block for cross bolts Your weakening it by doing that I would choose aluminum main caps with good main studs and aluminum rods for your driving desires As far as the static(mechanical) compressionratio you might want to start with 9.0 to 9.5 to one and then limit the boost as well as use a intercooler or water and meth.alcholol injection