My '68 convertible 350HO was a non-A/C car. I have added a Vintage Air system and I just found an original third-groove crank pulley. I was told I didn't need to replace the existing two-groove pulley even though I see from my parts book that it is a different part with a different diameter. My questions: (1) Is the two groove pulley basically the same except for a slight diameter difference; (2) Does the 3rd groove pulley go between the harmonic balance and te two-groove pulley and (3) Is the 3rd groove pulley installed so that it 'cups' over the h/balancer or the other way around?
Thank and if anyone has some good pictures of the install, please send to wgwilson@mts.net Garth
