Jim, it now looks like 1974 was the last of the 427 breed !
Paul (no login) Posted Sep 11, 2008 3:43 PM
Thanks for the confirmation Jim, and again,
---------> NICE BOAT ! <---------
Use good oil and keep good impellers in that boat and that motor will possibly outlast you and the next owner too! They are GREAT MOTORS, very strong, but they don't like running without oil!
I have used Mobil-1 Synthetic 15W50 for years and my 427 motors really seem to like it. Plugs stay clean, startup is very slick with the full cold flow capability of an engineered oil product that actually flows better than some 5W oils when cold. In addition, I have long thought it gives better protection to emergency situations, such as blowing out an impeller and not knowing until things get hot.
Quite awhile ago I did just that. I destroyed an impeller and didn't know that it even happened. Here we were cruising along and Janet said, "do you smell something"? I glanced back and it looked like a WW-II destroyer laying down a smoke screen, as I was burning up the inside of the rubber exhaust hose at the time. I immediately shut down the motor, and thankfully, did not experience any motor damage. I attribute this in part, to having an oil on board that also helped act as a cooling agent, and provides far superior properties than the "cheap equivalent".
Now Mobil-1 has a new 15W50 on the market, and it is their "Extended Performance" variety, which I would most certainly use. Another superb oil can be found in the oil section of our Master Index Files, but I'll save you from having to look it up, here it is http://www.network54.com/Forum/424840/message/1124814627
I have not used the Amsoil marine product noted, but I have used it in my Porsche 928 V8 5-speed with very good results. I have had exceptional results using Amsoil synthetic gear lube in three Porsche transaxles too, so they do make a great product.
Back to the Ford big dogs...........with clean PCV valves, good fuel filtration and clean carbs, a good distributor cap, adjusted contact points and/or electronic Pertronix ignition, timed properly, and with valves properly set, you will have one awesome piece of marine equipment with great performance and lots of history too. They like having the valves set properly too.
