Diagrams:

Various Engine Belts
(click to enlarge)

B4505	68	BELT - fan & alt, w/AC w/o P.S. 350hp	18.15
B4511	68-69	BELT - fan & air conditioning w/o P.S. 350hp	13.65
B4502	70-74	BELT - air conditioning	15.60
C4506	78	BELT - fan & air conditioning, w/MT	14.15
C4507	79	BELT - fan & AC, w/o spec. hi-perf	13.70
C4508	80	BELT - fan & air conditioning, w/L82	14.15
B4517	68	BELT - fan to air pump, w/o AC 300hp	22.65
B4513	68	BELT - fan to air pump, w/o AC 350hp	10.65
C4501	70-72	BELT - air pump, w/hi-perf	10.25
B4514	78-79	BELT - air pump, w/AC	12.75
B4515	81	BELT - air pump	16.95
C4509	82	BELT - air pump	10.10
B4506	70-72	BELT - fan & alternator, w/o AC	20.10
A4503	70-74	BELT - fan & alternator, w/AC	20.15
B4504	75-77	BELT - fan & alternator, w/AC	13.25
C4505	78-79	BELT - fan & alt., w/AC, MT & spec hi-perf	11.95
B4503	73-74	BELT - fan & air conditioning, w/hi-perf	15.65
C4504	76L-77	BELT - fan & air conditioning	13.55
B4510	68	BELT - fan & power steering, w/o AC 350hp	11.45
B4508	68-69	BELT - power steering, w/AC 350hp	12.85
B4516	69	BELT - fan & power steering, w/o AC 350hp	17.65
B4518	73-74	BELT - power steering, w/AC	12.95
B4501	70-72	BELT - fan, w/o AC or spec hi-perf	9.75