Why dont you call Hugh Hefner, he has PBB#69

Uh... Did they reuse anything other than the blocks

Top ends 6-7k min for twins and probably more like 8-9k. It really depends what you replace.

Full rebuilds, about double the cost of top ends

Mine tirnew in to a total **** storm. Not just motors turned in to drives being gone through to. Props mried all kinds of stuff. I had a real bad twisted prop shaft on the drive for the same motor with the bad lifter.

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You say rockers are the killers...in all my research I haven't seen many rocker failures on blue motors in general. I saw one post from Eddie but that was from a bad batch of gold crane needle bearings.

We just did ours. I'd budget 5k a motor. In the end ours was close to that but because we found things after it was opened which is always the case. Our rebuild:

-8205 plus springs
-Manley valves
-rl931 lifters (morel 4603)
-gaskets
-mil head
-t stat housing W/ cover
-push rods
-didn't replace rockers (300 hours on them)

How does your boat run? I've got my on a donzi 39 zsc with 500efis

Hmm you could do those with out even pulling the engines.

Runs great. 62.6 on her best day. Can usually touch 60 during the summer. Will run 58 all day with a crew. I mostly don't push it and cruise 3200rpm at 36mph

When i rebuilt a 500 efi last wintrr for a customrr that had around 300 hours on it (sand got thru his flame arrestor ) there were a couple crane gold rockers w flat spots on roller tips fwiw