Re: Powerhead interchange question.
Nope, sorry. The models that are the same as yours, as far as a direct bolt up application, are the V4's from 1974 to 76. The 1977 85 & 115 from the 20" models are the same but not the 140's. Any 1973 V4 will bolt up but keep in mind that some of the individual powerhead parts (block, crank, rods and pistons) are exclusive to 1973.<br /><br />A crossflow powerhead from 1978 and newer, or the 1977 140 & powerheads from the 25" 85 & 115, can be adapted to fit. Youll have to alter the bolt pattern on the bottom of the block (for the base gasket). Some places like Flagship Remanufacturing have the jig to do that.<br /><br />BTW -- you have a 1974 Evinrude but its the same as the 1975 anyway. And the replacement you mention is a 1971 125.