i didn't really know where to put this, but my uncle has a boat with a 305 chevy engine in it and the short block is toast, water was in the cylinders and a ring land broke off when it was broke loose....

are the automotive 305's usable as a short block???

are automotive bearings, pistons, and piston rings usable instead???

after reasearching he's only found outrageous prices for reman/new short blocks... thanks for any help!

Standard or reverse rotation ?
Find the 'engine id number' as shown top right in pic
http://www.yearone.com/updatedsinglepages/Id_info/gm_engine_id/gmidimages/endinedetail1.jpg

they just told me some numbers over the phone, so im not sure what came from where...

3868860

50fbtbyc

t1310282

i tried mortec and couldn't find any of the above...

you can always use it as a anchor for the boat. that's about all 305 are good for. around here they are a dime a dozen

sorry i guess i didn't specify... im looking for a cheaper way to rebuild the engine for the boat... not for my car...

Except for a very few reverse-rotation engines, a boat long-block is just a car long-block with brass frost plugs and an extra thousandth of piston-to-wall clearance.

Boat engines do get the crap beaten out of them, though, so it's best to use premium internal parts.

Find a complete long block 305 (if that's what you really want) They can be bought for cheaper than rebuilding the one you have. In a day you could be out on the lake again.

thanks guys... we'll be looking for a 305 short block...

replace with a 350 upgrade bearings etc... will be much happer if you pull tubes skier's etc.. I have a 4cyl. boat relaced w/ upgrades not too shabby but compared spend the little dough and get some more....power... although lake's are down.. not sure your area best of luck james. ps. not a boat mechanic just a lake/fisher/skier/beer drinkin lover.......

ohh yeah love chevlles too!!!!!!! mine the most although not done by no means anyhow best of luck james, ps i heard a lot of hot rodder like boat motors due too their life of high rpm's/ durability>>>:hurray::hurray:

Remember if you are going to use the engine from a car or truck you will need to use the camshaft from the marine application. If you don't, the engine will be a real slug in a boat.

9,
There really is not much difference at all between the boat engines and truck engines. The camshaft is different but that is about it. I have an OMC 305 in the shop right now and it even had the normal GM head gaskets on it.

Are you sure that those are the correct casting numbers ?? I cant find them anywhere either and I have several sources.

How much does he want to spend anyway ?