Pittsburgh, Pennsylvania, USA
My Posts: All Forum Topic
If you want to keep running 690s you don't need the 33" boom. You'll need the 90 tooth main gear and a 14? I believe pinion on the clutch bell, a new collet set for the engine, and possibly engine mount. My Pro Graphite 60 is very similar, and these are basically all it needs when/if I want to do it because it already has many upgrades. If yours doesn't have it already, you'll want the upgrade that adds a bearing to support the front of the tail drive off the main gear.
I can get you the stock #'s if you want, I have them written down...but I'm not sure if they all apply to the 1004, as I don't know what # a pro graphite is.
Team YS Engines