Sounds like you need a 9799128. Butler sells them new: https://butlerperformance.com/i-2468...l%3Fq%3Dpulley
I had the earlier water pump (4"), and a smaller pulley on my 69 Firebird, but the wrong offset. I changed to the larger water pump (4-1/2") and found a 9799128 pulley from a Facebook Marketplace Pontiac Group a few weeks ago. You can check e-Bay as I've seen them recently, and you might try getting a hold of member 'ol Pinion head', but he's seems to be missing lately.
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- Mike
'69 Firebird 400 - Goldenrod Yellow, 455 +.060, '6s-7' heads, Comp Cam 276AH-10 (51-309-4), TH400, Ford 9-inch w/3.08, 800cfm Q-jet, Stock Intake, Hooker Headers, Flowmasters
'68 Coronet 500 Convertible - Medium Gold Metallic, stock 318 +100,000 miles
Last edited by Hikin Mike; 10-19-2020 at 11:24 AM.
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