| Author |
Message |
    
Paul McGowan
New member
Username: grew215
Post Number: 1
Registered: 11-2009
| | Posted on Thursday, November 12, 2009 - 02:11 pm: | 
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I bought this boat with a OMC 5.7 that was frozen, I have a Pontiac station wagon 5.7 with a 4 bolt main, can I use this with all the parts from the blown engine.
Regards Paul |
Bob Hill
Senior Member
Username: boatin_bob
Post Number: 1490
Registered: 07-2006
| | Posted on Thursday, November 12, 2009 - 04:10 pm: |
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You'd have to change over the cam as well, would kill it with the car cam in there. |
Bondo
Senior Member
Username: bondo
Post Number: 2107
Registered: 12-2006
| | Posted on Thursday, November 12, 2009 - 06:38 pm: |
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Ayuh,... Only if your Pontiac wagon has a Chevy motor,+ the Vintages are similar... |
Paul McGowan
New member
Username: grew215
Post Number: 2
Registered: 11-2009
| | Posted on Friday, November 13, 2009 - 08:32 am: |
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So I guess the long and short is stay away from a car engine and put a marine engine back in.
Regards Paul |
makomark
Senior Member
Username: makomark
Post Number: 1875
Registered: 09-2008
| | Posted on Friday, November 13, 2009 - 08:52 am: |
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The short story is replace with "like kind". That way you can reuse all the bolt ons. If you swap block types you spend a fortune on parts and fabrication. |
Hy Stat
Senior Member
Username: hystat
Post Number: 1552
Registered: 05-2007
| | Posted on Friday, November 13, 2009 - 09:06 am: |
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main thing is rear main seal type - pre 1987 used 2 pc and for many OMC applications this is needed to match the drive coupler bolt pattern.
After 1987 used 1 pc rear main which has a different crankshaft bolt pattern
New chevy 290HP 350 crate motors use the 2 pc pre-1987 design which is great for marine repowers.
I have swapped out a few marine engines with automotive long blocks (new and used).
Swap in brass core plugs
swap in a marine cam and new lifters
I have a 350 runner I just pulled out of my Chevelle here Paul (2 pc. rear main seal).
I'm over Peterborough way.
email if you are interested. I could put a marine cam and brass plugs in it- or you could.
I just built a 400 for my car.
The 350 ran fine- needs valve seals (like every 350)- was blowing blue smoke at start up. |
chiefalen
Advanced Member
Username: chiefalen
Post Number: 362
Registered: 03-2008
| | Posted on Friday, November 13, 2009 - 12:56 pm: |
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350 truck motor same series would do nicely thats the trick " truck " motor.
Same series would allow the mani's and coupler and everything else from the old motor to match up.
Other wise it's like HY say's you will be working forever trying to fabricate. |
RRB
Member
Username: arcrat
Post Number: 73
Registered: 01-2009
| | Posted on Monday, November 16, 2009 - 11:29 am: |
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Only diff. is main caps....
use mer.carb . i have turned 6500rpm with two bolt main cap blocks..
arcrat |
