340 Triple Groove Crank Pulley

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2fine69s

2fine69s

69 340-6pak Rag Top
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Hey guys,
I am in need of a 3 groove lower pulley for a 340. I am using the 67-69 cast iron water pump. The crank is scat and the harmonic balancer is a Mopar Performance Repo for the 340. I have a 2 groove that fits but I need a 3 grooves to support my add on AC. My 2 groove pulley has a 6 bolt with an outside to outside bolt pattern of 3 1/8". The OD of the front of the pulley is 6 5/8", but I think I can use one larger. If anyone knows of a factory lower pulley for a 69 Dart 340 with AC, Thats the pulley I need. My car has been apart for a long time and stuff is missing.
Thanks
Martin
 
Did you find one ? What year ? I have a 70 340 duster here with A/C I can match one up if that would work for you., If its for a 70 71 I may have one. Steve
 
69 and down use a completely different belt stacking from 70 and up. On the early set-up, the A/C belt rides on an add on pulley in front, and uses an adjustable idler for tension. The 70-up uses dual belts and the alternator for tension. None of the pulleys are interchangable from early to late.
 
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