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Author Topic:   4.9L Ford Water Pump Caution

Posts: 16287
From: Saco, Maine MCA # 47773
Registered: May 99

posted 09-01-2001 09:06 PM     Click Here to See the Profile for SteveLaRiviere   Click Here to Email SteveLaRiviere     Edit/Delete Message   Reply w/Quote
You 4.9L 6 cylinder guys will want to know this:

Ford Water Pump Caution
Application: All Ford 4.9L (300 CID) engines.
Problem: Possible engine block damage when installing replacement water pump.
Cause: The water pump mounting hole flange thickness was increased by Ford after the 1992 model year. If a pump with thin mounting flanges is installed using mounting bolts from a 1993 or newer engine, the bolts will bottom on the front cylinder wall causing distortion.
Solution: Compare the mounting flange thickness for each mounting hole of the replacement and original pump. They must be the same thickness. NEVER use mounting bolts from a 1993 or newer engine with the thinner flanges.

'70 Mustang Mach 1 M code 351C 4V/FMX/3.25 open
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'94 F-150 XL 5.8L/E4OD/3.55 Limited Slip
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