Quote:
Originally Posted by unclebilly
Mine appears to be a 239, 99 or 100 HP. It has factory dual exhaust and I’m not sure if it has a governor- I do t see it if there is one.
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Just a suggestion from a guy who has worked on a lot of old trucks and tractors:
Take out a spark plug and put a rod 8 or 10 inches long in the hole. Turn the engine to TDC, mark the rod, then turn it to BDC and mark it again. If it’s 3.75” it’s a 239. If it’s 4” you got lucky and it’s a 255. If you do this on #1 it’ll give you a chance to mark TDC on the crank pulley. Sometimes it’s hard to see due to rust etc. The TDC info may come in handy at tune-up time.