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#1
12-18-2022, 12:10 PM
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water pump pulley size ac vs non ac
trying to confirm what size the water pump pulleys are on mid to late 70's firebirds for a/c & non a/c. if it matters specifically 78-79 W72 400 cars.
i have 6.5" & 8" pulleys, which is which? |
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#2
12-18-2022, 12:19 PM
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6.5” for AC
__________________
Will Rivera '69 Firebird 400/461, 290+ E D-Ports, HR 230/236, 4l80E, 8.5 Rear, 3.55 gears ‘66 Lemans, 455, KRE D-Ports, TH350, 12 bolt 3.90 gears '64 LeMans 400/461, #16 Heads, HR 230/236, TKO600, 9inch Rear, 3.89 gears (Traded) '69 LeMans Vert, 350, #47 heads: Non-running project |
| The Following User Says Thank You to grivera For This Useful Post: | ||
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#3
12-19-2022, 10:26 AM
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ok thanks. thats what i thought but wanted to be sure.
i recall reading many years ago, possibly in a HPP mag, that a trick to increase coolant flow in non ac cars was to use a ac water pump pulley. |
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#4
12-19-2022, 11:07 AM
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Yep, I've been doing that for 35-40 years.
Not only moves the coolant faster, but also spins the clutch fan faster. |
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