Max RPM, OMC 140

[ericneil]

I just bought a 1977 Fiberform with dual OMC 140 I/O. Any advice on the cruising and max recommended RPM for these engines?

 

[fone_man]

Re: Max RPM, OMC 140

Are these 4 cyl GM engines... ???

 

[ericneil]

Re: Max RPM, OMC 140

Yes, these are the 181 cid GM engines. I think they are called the "Iron Duke."