I've got an '88 Ebbtide with a 5.0L (Chevy) engine mated to a Cobra outdrive. Earlier this year, I toasted the upper unit due to a bad lube fill (yes, I know). I replaced the upper unit, and since then I have been fighting overheating issues.
After the upper was replaced, the temp would spike...
I'm the idiot who cooked his OMC Cobra upper unit (mated to a 5.0L engine) after a botched gear lube fill.
I've got a line on a replacement unit with a gear ratio of 21:18. The manual for my boat states that the upper unit drive ratio is 21:17. Of course, the guy selling the unit says it will...
I think I know the answer to this one already, but I thought I'd throw this out to see if any experienced folks can add their .02.
I have an '88 Ebbtide with a 5.0L OMC (GM?) engine and a Cobra outdrive unit.
I changed the lower unit gear oil on Saturday, and launched the boat for the first...
