roguemustang

I picked up a set of BBK underdrive pulleys (p/n 15550) for my '97 F150 4.6 (Windsor), but I can't get the crank pulley to piggyback the balancer. The BBK has SAE threads and the balancer is metric, but they are supposed to bolt together. BBK has never heard of any issues with this before....has anyone else?

Could someone else with a 97 4.6 check to see if their balancer is metric or standard threads? Maybe I've got a goofball...

Thanks!