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Old 03-02-2022, 09:00 AM
Jhankins Jhankins is offline
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Default 77 GP 400ci power steering pump pulley

I'm looking to replace my power steering pump pulley. It's a 6.6L 400ci with AC. The pulley on there is a single groove pulley and measures 12mm top width. Looking on Rockauto the single groove pullies are 10mm and the double groove are 12mm. Does anyone know what I should have on there? Is it possible mine is worn? TIA!

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Old 03-02-2022, 02:57 PM
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Kenth Kenth is offline
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I have found all 1967 and later Pontiac V8 uses 1/2" width power steering single pulley´s.

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Old 03-02-2022, 06:55 PM
Jhankins Jhankins is offline
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Thank you Kenth

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