Savinurazz
Recruit
- Joined
- Jul 16, 2012
- Messages
- 2
Hello everyone,
I'm new here I and have a question about doing a block swap for 4.3L Mercruiser. The question I'm having is the original block is an 85. The block I have to swap it out is a 89-90. The reason why I'm swapping the blocks out is because the 85 has a crack actually multiple cracks in the block do not being winterized :facepalm
that's how I traded a PS3 for boat and trailer). The 89 to 90 block I found for $200 it has been rebuilt and left in the garage. The major difference I see is in the size and the bolthole location on the flywheel. The major differences I've found between that 85 and the 90 Block/engine is the 80-90 flywheel is thinner, smaller in diameter and has a smaller bolt pattern bolts to the crank the one that came off the 85 which is the one I was actually on my boat is much larger thicker flywheel wider hole pattern. Is there any way to make it work? Can I pull everything from the 85 engine and drop it into the 89-90 block or are there differences that I'm not seeing? I have looked up info on both blocks here is the link
http://www.enginepartswarehouse.com/enginecatalog/GENERALMOTORS.PDF
Please if anyone can help with some info I would love the help.
P.S.
I'm in the USCG and am trying to do this as cheap as I can because I have limited cash lol
I'm new here I and have a question about doing a block swap for 4.3L Mercruiser. The question I'm having is the original block is an 85. The block I have to swap it out is a 89-90. The reason why I'm swapping the blocks out is because the 85 has a crack actually multiple cracks in the block do not being winterized :facepalm
that's how I traded a PS3 for boat and trailer). The 89 to 90 block I found for $200 it has been rebuilt and left in the garage. The major difference I see is in the size and the bolthole location on the flywheel. The major differences I've found between that 85 and the 90 Block/engine is the 80-90 flywheel is thinner, smaller in diameter and has a smaller bolt pattern bolts to the crank the one that came off the 85 which is the one I was actually on my boat is much larger thicker flywheel wider hole pattern. Is there any way to make it work? Can I pull everything from the 85 engine and drop it into the 89-90 block or are there differences that I'm not seeing? I have looked up info on both blocks here is the link http://www.enginepartswarehouse.com/enginecatalog/GENERALMOTORS.PDF
Please if anyone can help with some info I would love the help.
P.S.
I'm in the USCG and am trying to do this as cheap as I can because I have limited cash lol
