I tried using a propane torch and the puller but it didn't want to budge. How long should it have taken for it to fall off? I tried heating the aluminum gear with the torch for like 5-10 minutes.

And I just assumed that they would know the correct procedure. What would happen if they didn't heat the gear before they pressed it on?

69 Buick Special Deluxe. Intercooled Turbo Chevy 250 @ 15psi on a stock long block. It's kinda fast.