Does anybody know where I can find a Mercruiser 420 HP longblock built to the original specs with crane roller rockers, hydrolic lifters etc.?

Try Mel Riggs from Riggs Marine Service 1-920-872-2728

Thanks but he was no help. Just looking for a 420 HP Longblock, anybody know where I can find one?

How about a 525 efi long block 2003 with 201 hrs.fresh water cooled ?

Gripit,
Lenny @ Millennyum Marine in Harrison TWP, Detriot my have one. I got one from him last year that ran great. 586-468-7361
Good Luck

Lucky, that sounds really good, but I just want a back up long block on hand in case I need to replace an engine. I want the engines to match or I may consider.
Thanks

I have a complete Mercruiser 470. Just came from Oklahoma. I'm about to pull the engine.
Steve at 7138062904
Sorry for the typo. It's a 470 not a 420

20 years later, this may come to a happy ending with gripit finding a long block so that she can rebuild her engine.