I have a set of INDY SR aluminum heads over here as well and these heads dont have the same issue. The heads are much taller therefore the oil drainage issue is non existant. The Victor heads may be OK but Im not sure. I set the INDY SR heads on the block just to see. So I think its more of a stock style head issue here. I know it seems overkill to use this block with these heads, but my friend wanted a NEW block. 540" stock unported eddy RPM heads with a SIX PACK setup. Wierd setup if you ask me, but its what he wanted for his heavy street car. Oh yeah, its a hydraulic roller cam and the pushrod holes need to be opened up to clear 3/8 pushrods due to the tall roller lifter causing the pushrods to sit at a slightly different angle. Its all good.