3.0 volvo short or long block

SavinRaven

Petty Officer 1st Class
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Sep 16, 2021
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Anyone know where to find one of these? My Google searches are coming up empty...
 

vroom ZOOM

Chief Petty Officer
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Aug 15, 2017
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414
Anyone know where to find one of these? My Google searches are coming up empty...
probably posted in the wrong section. Hint: its the same block as mercruiser. All GM. michiganmotorz should have them. They are getting hard to find though, because GM recently discontinued the 3.0.
 

SavinRaven

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Sep 16, 2021
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228
probably posted in the wrong section. Hint: its the same block as mercruiser. All GM. michiganmotorz should have them. They are getting hard to find though, because GM recently discontinued the 3.0.
Will a long block 3.0 mercruiser be plug and play with the sx outdrive and motor brackets to?
 

SavinRaven

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Sep 16, 2021
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So i found one at Michigan Motorz

Will this block work if i took everything off my volvo engine and put it on this one?
 

88 Capri (2022 SOTY)

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Aug 25, 2019
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819
So i found one at Michigan Motorz

Will this block work if i took everything off my volvo engine and put it on this one?
I personally don't know; that's why I suggested posting your question in the link I posted earlier. There will be people who there who are more apt to have a correct answer for you šŸ˜Š
Click on it.
 

Scott Danforth

Grumpy Vintage Moderator still playing with boats
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49,538
all 3.0 motors start out as a GM industrial engine. the longblocks are all the same as long as you get similar year. 1990 was a transition year where the whole motor was redesigned and retooled. so make sure you are on the same side of the transition.

what changes is the engine mounts, fuel system (the whole intake and exhaust manifold), the cooling system and electrical system. basically everything bolted to the outside of the block and head
 

SavinRaven

Petty Officer 1st Class
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Sep 16, 2021
Messages
228
S
all 3.0 motors start out as a GM industrial engine. the longblocks are all the same as long as you get similar year. 1990 was a transition year where the whole motor was redesigned and retooled. so make sure you are on the same side of the transition.

what changes is the engine mounts, fuel system (the whole intake and exhaust manifold), the cooling system and electrical system. basically everything bolted to the outside of the block and head
Thanks Scott. So if I am on the 1991 and up side this being an 2004 I just want one being newer then 91 to be safe. Also here is pics of my 2500 boat. Def. Does have crack in manifold I don't see anything else I am going to change manifold and see if that's all this takes to fix it.. there Is a hairline crack in block to. I'm going to try jb weld. Oil looks good though still.

All things considered hull is in "new condition" no tears no soft spots. So I think the 2500 I paid for it is good deal. All electronics work and trailer is in like new condition comes with brakes and brand new tires still has the smell and the hairs on them well did before I dragged it 100 miles home that is..


The thing that strikes me as being weird is the boat was kept in his garage and he says it typically doesn't get below 40 degrees. And you could tell it was a finished garage so the whole thing is really weird to me.

I'm hoping a manifold where that excessive crack and jb weld can fix it otherwise I'm going to overhaul it with a michigan motorz crate engine I think.

Need to do some research on doing it myself if I go that route either way I'll need a manifold
 

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Scott06

Admiral
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Apr 20, 2014
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S

Thanks Scott. So if I am on the 1991 and up side this being an 2004 I just want one being newer then 91 to be safe. Also here is pics of my 2500 boat. Def. Does have crack in manifold I don't see anything else I am going to change manifold and see if that's all this takes to fix it.. there Is a hairline crack in block to. I'm going to try jb weld. Oil looks good though still.

All things considered hull is in "new condition" no tears no soft spots. So I think the 2500 I paid for it is good deal. All electronics work and trailer is in like new condition comes with brakes and brand new tires still has the smell and the hairs on them well did before I dragged it 100 miles home that is..


The thing that strikes me as being weird is the boat was kept in his garage and he says it typically doesn't get below 40 degrees. And you could tell it was a finished garage so the whole thing is really weird to me.

I'm hoping a manifold where that excessive crack and jb weld can fix it otherwise I'm going to overhaul it with a michigan motorz crate engine I think.

Need to do some research on doing it myself if I go that route either way I'll need a manifold
Yes the 1990 and up 3.0 will work for your application, you will also need the manifold and check the power steering cooler as that is probably busted too.

Likely you will find the block cracked just below the head when you pop the manifold off.
 
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