Serpentine Pulleys

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Long Water Pump Performance Ratios: |
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|
Set |
Crank pulley |
W/P pulley |
Alt. pulley with nose cover |
P/S Keyway pulley |
P/S Press Fit pulley |
Alt. belt size with March Bracket : 20125 |
P/S belt size with March Bracket : 20150 |
|
7211 (5.75") |
6312 (6.25") |
208 (2.75") |
|
42.5" |
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|
7231 (5.75") |
6312 (6.25") |
208 (2.75") |
Optional : 623 |
Optional : 624 |
42.5" |
38" |
|
|
Long Water Pump Mid-Performance Ratios: |
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|
7211 (5.75") |
6322 (5.25") |
208 (2.75") |
|
|
42.5" |
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|
7231 (5.75") |
6322 (5.25") |
208 (2.75") |
Optional : 623 |
Optional : 624 |
42.5" |
38" |
|
|
Long Water Pump High Water Flow Ratios: |
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|
7311 (7") |
6322 (5.25") |
208 (2.75") |
|
|
44.5" |
||
|
7331 (7") |
6322 (5.25") |
208 (2.75") |
Optional : 623 |
Optional : 624 |
44.5" |
39" |
|

|
Short Water Pump Performance Ratios: |
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|
Set |
Crank pulley |
W/P pulley |
Alt. pulley with nose cover |
Optional W/P nose cover |
Optional Alt. fan |
|
7611 (5.75") |
6212 (6.25") |
208 (2.75") |
Optional : 312 |
Optional : 221 |
|
|
Short Water Pump High Water Flow Ratios: |
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|
7671 (7") |
7622 (5.25") |
208 (2.75") |
Optional : 312 |
Optional : 221 |
|
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Chevy Big/Small Block Short Water Pump Performance Ratio Serpentine Water Pump Pulley
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Chevy Big/Small Block Long Water Pump Performance Ratio Serpentine Pulley - Single Groove
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