Engine Rebuild From Metric to Standard (090M to 090)

[brsox88]

So I bought a new engine block from RapidoMarine.com as others have on this forum, and when it arrived it said it was a 090M like my old cracked block is. Turns out after getting half the things install on the block, I realized that some of my metric bolts/studs would not fit. They screwed up and sent me a 090 engine block. I emailed them about it multiple times but they will not respond or help.

I can buy the standard .375 - 16 bolts at my hardware store, but the double ended studs (16-861577) for the ground posts and engine mounts I cannot find at any hardware store.The ones online say they are superseded but don't say what the new bolt part number is. Does anyone have any suggestions?

 

[Scott06]

get grade 8 studs from McMaster Carr. Look them up on the web. If you haven't gotten all the way into it yet you'll need the bellhousing bolts/studs, motor mount , and starter bolts .

 

[alldodge]

I can buy the standard .375 - 16 bolts at my hardware store, but the double ended studs (16-861577) for the ground posts and engine mounts I cannot find at any hardware store.The ones online say they are superseded but don't say what the new bolt part number is. Does anyone have any suggestions?

Mercruiser 16-64066 STUD (.375-16 x 2.750)