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  #1  
Unread 11-22-2016, 06:03 PM
Tommydoe Tommydoe is offline
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Question Motor swap help
Hey just got my first v20 78 has cracked block picked up 350 getting ready pull 305 this thanksgiving weekend any tips to look for or be aware of any advice would be great
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  #2  
Unread 11-22-2016, 06:16 PM
jvitiel jvitiel is offline
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Welcome Tommy !

Looks like its new members day around here!...
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  #3  
Unread 11-22-2016, 08:09 PM
Tommydoe Tommydoe is offline
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Thanks i know somebody out there as already done this before , iam excited been looking at gallery pic getting some great ideas

,
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  #4  
Unread 11-22-2016, 08:11 PM
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Mercruiser I assume? where are you getting the replacement engine from? Make sure to put new manifolds and risers on when you swap it out. Don't cheap out and use car stuff
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  #5  
Unread 11-22-2016, 09:19 PM
Tommydoe Tommydoe is offline
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Yes found 2 350 mercruiser complete & outdrives props & all rebuilt guy had bad luck with rotten boat & cut his losses so i have extra parts
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  #6  
Unread 11-23-2016, 01:14 AM
fixit fixit is offline
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i had to redrill my motor mounts as they were in a different location (4.3-5.7L swap) need a long drill bit...

everything else was relatively easy
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  #7  
Unread 11-23-2016, 07:45 AM
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what year model are the engines you acquired?
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Unread 11-23-2016, 08:13 AM
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Welcome aboard Tommy.
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1987 V20 w/1987 150HP Yamaha on a Shoreland'r Trailer
1978 16.5 Airslot w/1996 120HP Force on a Four Winns trailer
1996 V21 w/1993 200HP Mercury on a Shoreline Trailer
All towed by a 5.7L Hemi Durango.


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  #9  
Unread 11-23-2016, 01:02 PM
Tommydoe Tommydoe is offline
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90 i believe not vortex
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  #10  
Unread 11-23-2016, 03:49 PM
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Alpha one drives? You'll need to swap everything...motor, transom plate and drive. Yes, you can swap some of the components to make it work, but youre better off swapping it all. Take the time to rebuild the transom plate while you have it on a bench. Bellows, water tube, shift cable etc..
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