1970 442 455 cid With Air

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Old September 27th, 2017 | 02:13 PM
  #1  
keith.parks@sbcglobal.net's Avatar
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1970 442 455 cid With Air

How many grooves on the crank pulley on a 455 in a 1970 442 with a/C have? Is there a difference between a non-a/c pulley and an a/c pulley? Thanks in advance!
Old September 27th, 2017 | 03:15 PM
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I think the AC equipped cars have three groove pulleys: water pump and power steering, water pump, power steering and alternator, and water pump and AC.

The engine in this image doesn't have the AC compressor installed, but you can see the other pulleys.


Last edited by Fun71; September 27th, 2017 at 03:18 PM.
Old September 27th, 2017 | 04:01 PM
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RetroRanger's Avatar
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agree w Ken AC has 3 grooves i would guess non AC has 2 grooves, I have the 3 groove pully on my car w no AC currently but pass side alternator and there is an unused groove
Old September 28th, 2017 | 06:36 AM
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keith.parks@sbcglobal.net's Avatar
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3 Groove Pulley

I think you guys are right. Thanks for the response!
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