First thank you all for the help so far.
I have a boat with a 990255v comes back as a 1979 OMC 230. My question is a SBC the same thing and if it is will all my parts bolt on it? I did read about changing freeze plugs and getting marine gaskets. And as long as its a truck engine. Will this work?
Howdy,
Welcome aboard!
In general yes, You can easily replace a marine 305/350 with a similar year (up to a point) 350 truck block.
If you're operating in salt water, you *should* replace the core plugs (with SS or brass), head gaskets with marine type, and use a marine type circulating pump. The rest of the marine "stuff" Starter, dist, carb, fuel pump, etc should (.....must, according to USCG/ABYC guidelines) also be used.
There are some rear crankshaft seal issues that you must consider that I believe becomes a factor in the mid 80's.
There may also be some issues with the bellhousing mount/flywheel mount for the coupler etc.
One of the "Stringer Dudes" will probably jump right in here with details!
Regards,
Rick
I guess I should have remembered you asked some questions about your boat in another thread!
You must have discovered a cracked block?