Topic: Oct 65 hipo water pump

[poboy427]

Just confirming since I've heard conflicting information on the OCT '65 hipo water pump. I have a Nov 65 built Shelby, Oct 65 assembled Hipo engine.  My Tony Gregory book says the C6OE-A casting was not used until model year '67 and service replacements. I can't lay my hands my copy of Bob Mannel's book so here I am. It appears the cast iron 6 vane-C5OE-A casting is correct for my Shelby. Any disagreement?


Thanks Ray

[jwc66k]

I have a Nov 65 built Shelby, Oct 65 assembled Hipo engine, and it appears the cast iron 6 vane-C5OE-A casting is correct for my Shelby. Any disagreement?
My Tony Gregory book says the C6OE-A casting was not used until model year '67
Thanks Ray

Tony Gregory is wrong, Bob Mannel is correct - there should be a C6OE-A casting part number on the pump housing, with a six blade impeller inside. The changeover date appears to be around August for the 66 model year. I went thru this for my Oct 65 San Jose "K".
Jim

[Bob Gaines]

Just confirming since I've heard conflicting information on the OCT '65 hipo water pump. I have a Nov 65 built Shelby, Oct 65 assembled Hipo engine.  My Tony Gregory book says the C6OE-A casting was not used until model year '67 and service replacements. I can't lay my hands my copy of Bob Mannel's book so here I am. It appears the cast iron 6 vane-C5OE-A casting is correct for my Shelby. Any disagreement?


Thanks Ray

C5 cast iron pump would be correct on the earlier build (65 production) 66 carryover cars but The C6OE-A pump was used on the regular 66 GT350 production cars (after 252) from all reliable evidence . I hope you are mistaken that the Tony Gregory book would say that the C6 pump was not used until 67.

[poboy427]

Glad you guys caught that for me!! I have found the Tony Gregory 4th edition book to have more than one error.  Here is the text from Gregory, copied and typed exactly, including all the improperly inserted commas.  What he wrongly infers is that all C6OE-A pumps came without the 6 vane Hipo impeller. He stated elsewhere in the back of the book that L-8 occurred at May 1965-August 1965. The water pump section has some accurate info and some inaccurate.  Again thanks out to Jim and Bob for correcting this.~Ray


"High performance 289's built before August '64 use aluminum pumps with part numbers C3OZ-8501-B, and casting number C3AE-D, or C4OE-A.  After August '64 part number C5OZ-8501-A, and casting number C5OE-A were used.   At change L-8, C5OZ-8501-A, B cast iron pumps with casting number C5OE-A, B replaced the aluminum pumps.  Mustangs of 1967 vintage, and service replacement, employed a standard 289 pump, with part number C5OZ-8501-C, D and had a C6OE-A casting number. Author is also in belief that if a HP pump was not handy, at any point, during the engine building process, a standard pump was fitted. Water pumps were painted engine color on '65-67 engines but author believes a few 64-1/2 cars slipped through and were left natural. It should be noted that the timing cover changed at L-8 with added support for the heavier cast iron pump".

[J_Speegle]

  Wow - unpainted water pumps on factory engines ?

Would bet someone saw a early road test with a natural pump possibly due to a replacement

There is an early Shelby picture that pops up every so often with a natural timing cover