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hv pumps are pan drainers but you just don't throw them at any engine,as with any custom engine you make necessary adjustments for them.As far as the cross hatch most of the engines I build for racing or hp street my cylinders look like chrome or have very minor cross hatch just because you dont see it doesnt mean its bad.just make sure there arent major wear areas I know most people dont have bore guages at home but its worth a trip to the local machine shop.A lot of times just a quick hone with a christmas (one with the balls) brush just to take any glaze or stuck particles is all that is needed.Someone who doesnt know how to correctly use a stone hone will kill your clearances quickly and you will have piston rock or rattle when the engine is warm. Was you 550hp n/a or power adder?
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