FIFTEEN or 22 engine question

I could tell you exactly but I haven't got to tearing down my 15 engine I'm about to rebuild.
Would be easier to find one since they're helical. Check with Chad Eyneart in Laramie WY. He may have what you need.
Most likely their 8DP 2:1 ratio so it is pretty easy to determine the center distance using gear calculation formulas.
I attached a link.
https://www.rushgears.com/tech-tools/ratio-and-center-distance

Thanks side-seat, I was looking for the dimension to check my numbers from the formula. Every time I buy gears I hear how they are nice and usable, burnt twice, what I received was worse than what I was trying to replace. It's a straight helix so not a big deal. Just wondering if I make the crank gear from 1045 if it will get along OK with the old cast cam gear. Did a practice grind on the cam today, looks OK so I'm going to spray it. I'm sure their is still good parts out there but I'm not having good luck finding them anymore.

Pretty sure Cat never specified hemp oil in any of their machines

Thanks side-seat, I was looking for the dimension to check my numbers from the formula. Every time I buy gears I hear how they are nice and usable, burnt twice, what I received was worse than what I was trying to replace. It's a straight helix so not a big deal. Just wondering if I make the crank gear from 1045 if it will get along OK with the old cast cam gear. Did a practice grind on the cam today, looks OK so I'm going to spray it. I'm sure their is still good parts out there but I'm not having good luck finding them anymore.

So you can re grind your cam? That sounds interesting.