As stated in the Seloc manual, for a Mercruiser 233 (Ford 351W), the rpm at between 3800-4200. These are the figures for min-max rpm, and they apply for ALL Mercs 233s.
my manual says 4200rpm to 4600rpm at full throttle
A STANDARD MERCRUISER 2 BBL V6 PUT'S OUT 190 HP. A 4BBL V6 PUT'S OUT 210 HP. A TBI V6 PUT'S OUT 230. AND THE BEST FOR LAST A V6 MERCRUISER EQUIPED WITH THE M.E.F.I. 3,4,AND 5 MULTIPORT INJECTION WILL PUT OUT 260 HP. WITH A LITTLE TWEEKING YOU CAN SQUEEZE MORE OUT OF THAT GREAT LITTLE BLOCK! A MERCRUISER LONG BLOCK MAY BE THE SAME ON THE OUTSIDE AS WHAT YOU WOULD FIND IN A VEHICLE, BUT THE VALVETRAIN IS DIFFERENT IT USES HYDROLIC LIFTERS AND IS MORE OF A HEAVY DUTY SYSTEM. A MERCRUISER IS DEIGNED TO RUN AT 4600 RPM (WOT) ALL DAY! YOUR TRUCK WOULD PUKE IF YOU TRIED DOING THAT. WAZ-2 PRESPHIAMARINE.COM
Mercruiser buys engines from many suppliers, including Chevrolet.
The 2007 Acura TL's engine produces 233 ft-lbs. @ 5000 rpm.
The 2011 Hyundai Azera's engine produces 233 ft-lbs. @ 4500 rpm.
The 2008 Acura TL's engine produces 233 ft-lbs. @ 5000 rpm.
The 2006 Acura TL's engine produces 233 ft-lbs. @ 5000 rpm.
The correct timing for a Mercruiser 3.0L 140 engine is 6 degrees BTDC. for a Mercruiser 120 the correct timing is 8 degree BTDC.
Timing for Mercruiser 470 is 8 BTDC at idle speed. Mercruiser Service Bulletin specifies 4 degrees BTDC, due to new gasoline formulation.
The official website, Mercruiser Parts will easily enable one to find spare parts for their Mercury Mercruiser. Alternatively, there can be any number of people selling spare parts on eBay.
233 x 233 = 54289
The 2001 Mercedes-Benz M-Class's engine produces 233 ft-lbs. @ 3000 rpm.