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Old 12-02-2003, 05:03 PM
ERA649 ERA649 is offline
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Join Date: Jun 2003
Location: Hunterdon County,, NJ
Cobra Make, Engine: ERA 427 SC with 428 PI
Posts: 390
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Mike,

I think my Holly pump has 1/4 npt f/m inlet and outlet ,it's to cold to go out and check now.
1/4" pipe size is larger then 3/8 tube size. Remember tube sizes are OD sizes, so 3/8 OD and 1/16" wall = 1/4" ID. 1/4" npt ID = 0.410" so 1/4 pipe has a larger ID then 3/8 tube.


Mike
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