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just askin but how can anybody look at a block and say its stronger! it may look stronger but is it really... it seems "theory" is the cause of alot of arguments on here in all kinds of threads with no proven data to back it up... just sayin!

so what is the max HP of the indy block? also what is the max HP of the world block . does anyone have any proven data on this (other than looks)

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yes I realize that but the point is the holes are smaller than the other block manufacturers.
making the indy block inferior in one of the most important areas of a block..oiling.

and I was wondering if anybody else was drilling them to match the bigger holes the other manufacturers have so I wouldnt have to add more external lines
I believe the holes are smaller even than the factory block

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I would rather use top end restricter, return lines or a accusump system then flood the rotating assembly with return oil.Our own Indy aluminium blocks have literally 4 to 6 seasons on them and 100s of passes,the last count my 588" had 686 passes and Don's 605" was approaching over 500 passes.Pap Ross,Chaz and other have the same reliability. Go figure

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On the wide pan rail Indy block. Is indy the only ones that make a pan for it? (Dragster style)
Bob, your making me lean toward a 605 instead of a 572 for our Dragster. No power adders.

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I would rather use top end restricter, return lines or a accusump system then flood the rotating assembly with return oil.Our own Indy aluminium blocks have literally 4 to 6 seasons on them and 100s of passes,the last count my 588" had 686 passes and Don's 605" was approaching over 500 passes.Pap Ross,Chaz and other have the same reliability. Go figure

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On the wide pan rail Indy block. Is indy the only ones that make a pan for it? (Dragster style)
Bob, your making me lean toward a 605 instead of a 572 for our Dragster. No power adders.

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As far as I'am concerned the 572" is an orphan,it does not show any gain from a 540".If your going to build for big cubic inch power than 600+" would be my choise and that's still small for todays standards.Charlies' Pans and others build the wide pans.Even with the standard pan rail we have solved the oil return and pressure problems with the afore mentioned,restricters,external lines or accusumps.

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so you have an alum indy maxx water block
and you have safely drilled the oil returns with no water jacket issues?
that is what I want to do

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Lets be sure which oil hole that are being referred to:the ones in the lifter valley or the ones at the lower corners of the heads.The ones in the heads have a offset to align up causing a slight restriction.make sure that these hole are free from any silicone and gasket interference.