late model v-8 motor change

[squirtis]

excellent and thanks very much guys!

Will let ya know how it works out

Curtis

[spareparts]

Couple of other things for you to know about if you haven't allready figured it out. If that new motor was a fuel injected engine, it may not have a mechanical fuel pump boss, some did, some didn't, some had the boss, but didn't have the holes drilled for mounting and for the push rod to go thru. If you new motor doesn't have provosions for a mechanical pump, you can use a Marine Rated low pressure electric pump. Second, if you didn't allready know, the intake manifold bolt pattern is different, the center bolts come in at a different angle, you can open up the holes in your existing manifold and make some angled spacers out of 3/8 id pipe, its doable without a whole lot of work, but just be for warned. Also, while you have the new motor hanging on an engine stand, replace all the freeze plugs with brass ones, if you don't you will be replacing them before long after you put the engine in, the steel ones just don't last in a boat. If it were me, I'd pull the timing cover and replace the timing chain with a good high quality chain, the factory GM chain that comes in boat motors is excellent for the money, a Cloyes is a good aftermarket chain. Your motor may have coem with the factroy plastic gear set up, it will not last in a boat.

[squirtis]

Thanks again guys,

It's a buddies boat and I was helping him pull the motor etc. He already saw this morning the replies and is on it as we speak..LOL

I will post up how it goes and try and take some pics, and thanks again for all the really damn helpful input.

You guys rule

Curtis

[squirtis]

A special thanks to therm and spare!!!

You guys were exact on the money and it was really appreciated, we decided to put some spacers in to prevent the triangle converter bolts from catching on the bell housing.

She started up this evening...lots of work to do still, but she's running

Thanks again for all the help!

Curtis

[squirtis]

Well we took her out on the inland waterways around baytown today and into the bay a bit...pretty funny looking running with no engine cover so we could make adjustments as needed. She backfired a couple of times (pop) but nothing serious and think we got it figured out. The only real issue is that the linkage for going in and out of gear needs some tlc. Other than that she ran (according to the speedo) about 35 top end! Ran her for about an hour and a half with no problems other than the linkage issue. Thanks again for all the help guys.

Also ran into (pun LOL) chum stain on his 20V...sweet ride Rob!

Curtis

[garagenc]

Welcome to the site;

I have a 91 V-20 cuddy and I replaced my 5.7 (cracked block) I bought mine from rapido marine and I'm pleased with the motor. With the old motor and the new one they both would push mine 41-42mph (by gps).

Good luck