Chris, I'm just doing one motor, so for the moment just want to fix what's broken - you bring up another issue - I thought I had Gen IV blocks (I noticed on the list you posted in the other thread on block casting numbers however that there is no Gen IV 502, I'll check my block numbers) Again, I really appreciate the time you're taking to give me this info, I'd be absolutely lost without the brotherhood. - Jeff

You should hve no problem finding a188 head. Watch ebay, racingjunk.com or keep an eye out here- or post a "wanted" Also, PM Eddie at Young's Performance or Dean Gellner (mrhorsepower1) and ask- thy may have take-offs from aluminum upgrades.

You need to find out what bottoms you have to know what gaskets to buy or what mods to make. If they're Mark IV, they'd have to be Bowties. They're identifiable by casting number or down on the block apron you'll see a raised bowtie. More likely they're early GenV blocks-

again,Chris thanks for the great info, I appreciate it - Jeff

damn, I just checked my block numbers and I have #10051107's the Mark IV Bowtie 4 bolt main 9.8" deck motors and the bore is 4.5". I guess that I have 509's. What package was this? - Jeff

Look down low all the way in the back for a Mercruiser tag. It'll have a number that will tell you what they are. No tag- who knows?

If you only need one head I have 1 bare 188 laying around, new guides and seals. I might even have the intake valves if your interested.

Rookie, if I can't get one locally, I'm interested. Let me know. My number is 503-975-0551. Jeff

Its just laying around collecting dust. take your time. :)

I've got the "stuff" to make it a complete one. Let me know if you need it and I'll send it your way.

thanks guys I'll let you know - Jeff