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raceron1120 · 09-24-2010, 04:49 PM

Okay, according to Henry's parts book:

Crankshaft pulley for a '57 Tbird is not same as the big cars - Part # for a 312 without S/C (SuperCharger) is B5SZ-6312-A; double sheave, 7.55" long with 5 timing marks.
55-56 big cars are single sheave - # B5AZ-6312-A and includes the damper. '57 big cars without S/C is C3TZ-6312-E.
Power Steering pulley for 55-57 big cars is single sheave, Part # B5AZ-6A312-A, and is separate from the other pulley.

Illustration:

09-24-2010, 04:49 PM	#5
raceron1120 Senior Member Join Date: May 2010 Location: Ellsworth Michigan Posts: 1,807	Re: Y block power steering pulleys Okay, according to Henry's parts book: Crankshaft pulley for a '57 Tbird is not same as the big cars - Part # for a 312 without S/C (SuperCharger) is B5SZ-6312-A; double sheave, 7.55" long with 5 timing marks. 55-56 big cars are single sheave - # B5AZ-6312-A and includes the damper. '57 big cars without S/C is C3TZ-6312-E. Power Steering pulley for 55-57 big cars is single sheave, Part # B5AZ-6A312-A, and is separate from the other pulley. Illustration: