I've a buy a second hand 1990 Four Winns Horizon 180 with an OMC engine.<br />On the engine, it's written Cobra 4,3L<br />With the number written on the block, I see that this is not an 4,3L but well a GM 3,8L. I've some question about this engine:<br />What is the horsepower of this engine?<br />Is it a big difference with the 4,3L? Need I change the gear ratio?<br />What is the setting of the timing point?<br />Has someone some experience with this engine (consumtion, couple, ...)<br />Has some one the wiring diagram of this engine?<br />Thanks in advance for your help !