Topic: 67 GT350 water pump and timing cover ID

[Bossbill]

Just trying to validate the 67 GT350 HiPo timing cover and water pump numbers.
The 73 MPC shows a later number for the pump and I'm still working on my HiPo registry issue so I can't ask there.

My engine is showing a mix of December and January parts on an early March car build date.
My current timing cover is a C5OE-A1 with a circle 66 date made by Sheffield. Mannel shows this to be correct.

The water pump was replaced at some point and I'm showing a need for a C6OE-A with a 3 hole 6 vane impeller. Mannel shows this cast number, but not the vane count or holes.

[Bob Gaines]

Just trying to validate the 67 GT350 HiPo timing cover and water pump numbers.
The 73 MPC shows a later number for the pump and I'm still working on my HiPo registry issue so I can't ask there.

My engine is showing a mix of December and January parts on an early March car build date.
My current timing cover is a C5OE-A1 with a circle 66 date made by Sheffield. Mannel shows this to be correct.

The water pump was replaced at some point and I'm showing a need for a C6OE-A with a 3 hole 6 vane impeller. Mannel shows this cast number, but not the vane count or holes.

Yes on the C6 casting for the waterpump on your 67. The casting number was used for hipo as well as non hipo waterpumps . It is only the vane count that is different. 6 vane was typical hipo and 8 vane for non hipo.  The 8 vane push's more water for better cooling in typical pleasure driving and the 6 vane is for high rpm 5-6000 rpm continual driving. It is up to you to decide which number of vanes makes the most sense to you given your driving expectations because no one else will be able to tell once it is installed. Also FYI the original impeller is cast iron (3 hole) . The 8 vane cast iron impeller has 4 holes. There are steel versions with ether vane count that work just as well but were not what was used when the pumps were first made.     

[Bossbill]

Thanks Bob.
The vendors all seem to think all 65-67 Hi-Pos are the same. The 67s have a much more standard front dress (t/c and pump) than the early cars.

My T/C appears correct according to Mannel and matches the date of engine and type of pump. Would still like validation from others who have a GT350 to see what timing cover they have.

Update to clear up that I'm looking for t/c input.

[Bob Gaines]

Thanks Bob.
The vendors all seem to think all 65-67 Hi-Pos are the same. The 67s have a much more standard front dress (t/c and pump).

My T/C appears correct according to Mannel and matches the date of engine and type of pump. Would still like validation from others who have a GT350.

There are differences between 65-67 hipos depending on the item being discussed . There are also common things that 65-67 hipos share depending on item being discussed. I am not sure what you mean about your statement  " The 67s have a much more standard front dress (t/c and pump)"  because there is not a different hipo timing cover vs. a non hipo timing cover. The same goes for the exterior of the hipo water pump . In the case of the waterpump the difference is the impeller inside. The casting numbers are the same on the hipo engine as non hipo on both the timing cover and the waterpump. 

[Bossbill]

I updated my previous post to indicate I was looking for others with similar timing covers and their cast numbers. It appears after Bob's last post I no longer require that info.
Bob also covered the 67 Hi-Po water pump very well and added detail about the standard pumps of which I was not aware.

If you go out looking for a water pump the vendors only list "65-67" Hi-Po pumps.
Yes, they include 67 and show the aluminum Hi-Po pump.
But those pumps are open back and require a different timing cover.
That lead me down the bunny trail of what the heck is stock on a 67 Hi-Po?
This is actually hard to figure since the MPC lists only later replacement Ford numbers and not assembly line. There is very little written about the 67 Hi-Po engine online and it's mushed together with 65-66. Further, my engine has been apart so I can't count on it being stock anymore.

What I mean about "Standard front dress" is the 67 Hi-Po uses a stock t/c, a stock looking water pump and stock looking fan. Maybe the term front dress is odd or maybe just regional.

Thanks for adding to the discussion, Bob. I am no longer confused (by the vendors).

[krelboyne]

Hart Bros in Albany, Oregon offer a cast iron reproduction HiPo water pump impeller.

[67350#1242]

The 67s have a much more standard front dress (t/c and pump)" 

There was a change at some point in the timing cover that went from having ribs along the top to being smooth.  Seemed to occur sometime between later 66 and early 67.
I'm not sure if it was a 66 to 67 model year cutoff or if there was some overlap - perhaps someone on the forum will have more info about this?

[Bob Gaines]

There was a change at some point in the timing cover that went from having ribs along the top to being smooth.  Seemed to occur sometime between later 66 and early 67.
I'm not sure if it was a 66 to 67 model year cutoff or if there was some overlap - perhaps someone on the forum will have more info about this?

In very early 67 production there was a change from the previous cover with the ribs along the top to the smooth style. The vast majority of 67 production had the smooth on top timing cover.