Good thinking !

yup---using a car jack will be fine as long as it is supported properly and will do no damage to the floor while taking the load----once you have them separated you will have a much better idea of who **** the bed so to speak----i also like the idea of removing all belts and accessorries from the picture in case any one of them froze up----unlikely though as there would have been at least some failure warning like a screaming bearing or growling noise----the frozen rings dont seem too plausible to me as you stated that the engine ran fine and then only sat a very short time------those problems are more inherent to an engine which has sat still for an extended period with no cranking or running----let me know how you make out and i hope its something you figure out without too much more misery..

Made a cross brace and used a comealong to lift rear end of engine. Pulled borgwarner and it spins by hand on both sides so it is not locked up - the motor is. I'm f'd and frankly done dealing with Bill's marine abortions....so, perhaps it is time to find two regular rotation long blocks with more juice - 540s perhaps, sell the motors I have, replace th borgwarners with something that can handle more power - 72Cs - and move on.
Problem is the boat is too big to trailer so I need to find a marina that wont rape me while I get this sorted out. Bummed.

I had an altenator lock up and the motor would not turn over until i cut the belt.......

pulled all belts a while ago - even disconnected the mechanical fuel pump.....it's the motor

Sad to hear...hate to see that happen to a customer.
I personally have 3 bigblocks in progress that are F´ed up by
(self) reputable marine engine shops here and the former customers for some reason chose me to do the "warranty rebuild".

Sorry to here about your troubles Swamp!

Any new updates?!

Hey Swamp:
I just noticed I'm in your area. Do you have this sorted out yet?
Call me if you'd like my help. (954) 895-4633.

Thanks for the offer Edward - I think I have a good guy to swap motors for me - very professional, clean shop. Now I need to find the right engine guy.

.....and money