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Engine swap

robs_renken

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Can a 4.3L replace a 3.8L with

Can a 4.3L replace a 3.8L without too much difficulty? I have a 1985 21'Renken cuddy with a cracked 3.8 block. All i can find are 4.3's.
The Renken has an OMC eng with a "Stearn drive" outdrive.
HELP!!!!!!!
 
"I believe the 3.8L is a Buick

"I believe the 3.8L is a Buick family engine, whereas the 4.3L is GM. I recall guys having to purchase an adapter plate to get the 3.8L to bolt to a TH350 tranny in street apps, so I am not sure if your intermidiate housing will bolt up to a 4.3.

You may want to consider a repower with a used complete package if you can not find a rebuildable / rebuilt 3.8."
 
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