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Re: While the 250 is pulled...
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Originally Posted by GRX
^^Good mention. They are in fact helical gears. Larger one at the cam is composite to help reduce vibrations and noise. Replacement is up to you OP. May be a bit beyond how far you want to go at this point. Requires removing side covers, lifters, pushrods, etc.
Did all that with my 250 about 10 years ago when I upgraded to the "marine" cam for a bit more performance. Pretty common back in the day.
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If the timing gear is plastic, I would replace it with an aluminum one.
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Every 25 years I like to rebuild that 292, whether it needs it or not.
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