Chrysler 15HP not as fast as a similar OMC?

777funk

Petty Officer 2nd Class
Joined
Jan 12, 2015
Messages
150
My dad tells me that he had a 15 of each brand and the OMC was a lot faster on the same boat. Is this normal or did he have a dud or poorly tuned engine?
 

RCO

Petty Officer 1st Class
Joined
Jun 15, 2016
Messages
350
I've had both and thought the Chrysler seemed more "torquey"- would get on plane faster with heavier load, but top speed seemed about the same. Possibly he had a newer prop rated hp OMC 15 vs an older crank rated 15 Chrysler? Could also have had a less than ideal prop on the Chrysler, or was mistaking the higher wide open RPM of the OMC motor for speed.
 
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