I know a little about this new Mercruiser 502 engine but nothings confirmed until it debuts in the marine manufacturers show in October in Florida.
What a few people in boating need to remember and understand is that the 502 blocks GM High Performance has been selling along with the 572's have not even been cast or made by GM, but were subcontracted from Tier suppliers. They will still be available from these suppliers through GM parts until they become to unprofitable to make or sell in the market.
I can tell you one thing, the cost of these new freshwater cooled replacements for the 496's will be more expensive and with these new emissions systems should be a real challange to keep running under warranty and after. If anybody in the industry can do it Mercury with their resources has the best chance.
I seem to remember about two years ago when everyone was touting GM's new LS offerings that in a certain Powerboat article interview I stated the new LS stock 6.0L based N/A or supercharged engines would not be the future of the performance boat engine market.
There is no replacement for displacement! in performance boats!
I guess Mercury was reading and agreeing with my thoughts!
I hope the industry can recover quickly and there will be some performance boat builders left to buy these new offerings. I am sure we will be able to come up with some reasonably priced goodies to tweak them up a little bit!
God Bless the Big Block!
Best Regards,
Ray @ Raylar