OMC was a serious manufacturer and I strongly doubt that the higher rating would only have been some marketing ploy. Maybe those different ratings could have been the result of different rating methods on various markets. I’m really at a loss here. Thanks for your thoughts.
Well, the sales/marketing department ruled the roost, so they were certainly not above marketing ploys and other such tactics. HP rating methods were changed, but that way back in 1985, so that should not be an issue in 1992.
I did find the 35hp model(s) you mentioned. Looks like the block and intake are the same, but there does seem to be a unique carb for the 35hp model. Needless to say, there are many different variations on all the models that affect part numbers, so having the exact model numbers of the two engines would be helpful in pinpointing differences.