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Water Pump
There are two main types of water
pumps in use on Chevrolets: short leg and long leg. Small block cars used the short leg
through 1968, then switched to the long leg. All big block pumps used a water bypass
fitting on the top of the pump.
Small Block Pumps |
Part
Number |
Year |
Engine |
HP |
Notes |
3782608 |
1967 |
327 |
210, 275 |
350 |
295 |
1968 |
327 |
210, 275 |
350 |
295 |
3859326 |
1967 |
302 |
290 |
1968 |
3927170 |
1969 |
all |
all |
Used interchangeably
with 3953692. Rare. |
3953692 |
1969 |
302290 |
327 |
210 |
350 |
250, 255, 300 |
Big Block Pumps |
Part
Number |
Year |
Engine |
HP |
Notes |
3856284 |
1967 |
396 |
325, 375 |
1968 |
325, 350, 375 |
3931065 |
1969 |
396 |
325, 350, 375 |
427 |
425 |
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