Max RPM

[hoosierhog]

Anyone know what the max rpm would be for a OMC 351 235 hp engine. I think it was geared too low as the engine would only go to about 3200 rpm and seem to bog down. I have recently changed the outdrive and it has different gears. Now I can get well above 4000 rpm without going to WOT. I don't want to over rev the engine and have it blow. I may be overly cautious but better safe than sorry. It would be helpful if anyone knew what gears the boat came with originally. I don't think the outdrive that was on the boat when I bought it was the original drive. Thanks in advance for any help.

 

[Alibuma]

What gears are you running in it now? Could be as simple as a propeller change. What prop? Your engine should max out around 4,400 rpm.

 

[Lazy Daze]

Shootin a bit from the hip here, but I thought the max WOT (trimmed up) on that 351 was still in the same range as a Chevy? Something like 4,600 to 4,800?