Dave Stribling
May 31, 2018

Shelby Water Pump Details

I’m looking for a water pump for my 1970 Shelby G.T. 350. The Ford service parts book says the replacement part number is a D3UZ-8501-A pump, but what was the original part number and how do I tell the date code?

The C8OE-8501-D (top) was originally installed on most 1969 351s and is the most common pump used. The C8AE-8501-J is nearly identical with the only difference being the boss on the left side is drilled for accessories on this pump. They may come either way depending on options. The Ford replacement is a universal number, D3UZ-8501-A, which covers most small-block cast-iron pumps.

Earl B.
Des Plaines, Illinois

Most 351s from 1969 came through with the C8OE-8501-D water pump, although the C8AE-8501-J is identical and may have been installed on some engines in 1969. Ford didn’t stop the production line just because they didn’t have the correct water pump. Trust us, it happened a lot with all manner of parts. Stopping the line had to be a true emergency! If you can find one, go for the C8OE-D. As far as the date code, it was very lightly stamped on the backside on the gasket area, and this stamp was usually lost after the first rebuild, so don’t worry about the date code. The casting number is more important. Good luck in your hunt.

Cobra Oil Pan Fitment

I picked up a Cobra aluminum oil pan at a swap meet. It doesn’t have the dents like my original 1966 289 steel pan. It should fit, right?

Trent Lowe
Effingham, Illinois

Yes, it should fit. The two “dents” on the sides of the oil pan were put there to provide extra clearance for the inner tie-rod ends on the Mustang. The Cobra pan doesn’t have them but you should clear no problem. Just to be on the safe side, turn your steering wheel lock-to-lock and check the clearance to the tie rods. If it looks like they would clear without the indentations, you’re golden. Nice score on the pan too!

To make engines fit in the smaller chassis, Ford put some reliefs in the oil pan to avoid hitting the inner tie-rod ends at full turn. The one on the left is the Mustang -style pan, and on the right is a pan from a mid-’70s truck, which did not need the indentation in the big truck frame.