Originally Posted by kleinkid
Here are a couple of before and after pics of the ej20k heads that are on my ej257 short block, showing what the chamber work looks like that Maxwell Power Services did. Illustrates what he is talking about and may help you with your decision.
finally.... a picture is worth a 1000 words or dollars perhaps..
i have often heard of 'unshrouding the valves' .. now i see.. i wonder what the cylinder head volume change is.. around 5cc?
another question.. some folks say the 2.5 cylinder diameter is larger than the circle you see in the pics. so they say.. lay a 2.5 head gasket over the 2.0 head, scribe the circle and then remove metal from the head so that the 2.0 head ends up being the same diameter as the 2.5 block. no 'overhang'..
it appears from above that either a) the 2.0 'circle' is the same diameter as the 2.5 cylinder or b) the so-called 'overhang' issue is bogus..