440 Water Pump Housing

[MJFUR]

1969 Heater Hose Nipple fittings, both 5/8".
1970 Heater Hose Nipple fittings, one 1/2" & one 5/8".

Are the water pump housing holes/threads for these nipple fittings the same size or is there a difference between 1969 and 1970 water pump housing?

Thx

 

[413]

Different size threaded holes in the housing.

this is dated 7-69 for a 1970 car.

 

[MrMoparCHP]

In 69 both holes are the same but AC cars had a nipple in one for a 1/2" hose.

69 Used/Right
70 New/Left


Alan

 

[MJFUR]

Thx.

I have a 69 A/C car, so the Heater Control Valve and Pump Housing are set up for the 1/2" & 5/8".

Everything under the hood was rebuilt, re-manufactured or replaced in May. The pump housing is still 1969, but my lower radiator hose (at pump side) keeps seeping/dripping/leaking. I've tried two different hoses and two different style clamps. I'm tired of pulling the power steering pump, all of the belts etc. to get enough room to work, only to have it leak once all back together. Another problem is the wire clamp (Corbin) ends stick out toward the radiator which interferes with the Alt/AC belts once re-assembled. Trying to clock the clamp with no room for the pliers is one giant PIA. It may be time for a new pump housing.

I was looking at the whole kit from 440 Source, but they only offer the 5/8" nipple fittings. Water Pump Housings-440 Source
I have a new 1/2" fitting, just wanted to be sure it would fit the hole in new housing.

Any Pro's or Con's with Aluminum vs. Iron housings? Thx

 

[FURYGT]

Several years ago, when I had by 520" stroker built there were issues with the 440 source aluminum water pump housings having poor flow from poor internal casting.

Therefore I put a Mopar performance aluminum housing on the 520" and I had a major problem with it this summer. Aluminum particles from inside of the housing could be seen floating in the coolant and had clogged up my radiator. Also, a pinhole developed from the inside out in the recessed area on the driver's side of the pump between two of the bolt holes. I replaced my aluminum housing with a good cast iron factory part.

Some of the reproduction corbin style clamps do not have the strength that the factor ones did. I traveled an hour to a car show years ago and after sitting for a little while, the pressure blew the upper radiator hose off of the thermostat housing. My two cents is to use a good quality screw clamp or use two of them. Buy black ones or paint them so that they don't stick out as being incorrect if you are trying to have the engine look factory correct.

If you don't have a set of corbin clamp pliers, get them. Hey have recessed ends to fit over the ends of the clamp and the ends of the pliers turn so that you can get on the clamp from various angles. I think that I got mine from Eastwood but it was a long time ago.

Good luck.

 

[MJFUR]

Several years ago, when I had by 520" stroker built there were issues with the 440 source aluminum water pump housings having poor flow from poor internal casting.

Therefore I put a Mopar performance aluminum housing on the 520" and I had a major problem with it this summer. Aluminum particles from inside of the housing could be seen floating in the coolant and had clogged up my radiator. Also, a pinhole developed from the inside out in the recessed area on the driver's side of the pump between two of the bolt holes. I replaced my aluminum housing with a good cast iron factory part.

Some of the reproduction corbin style clamps do not have the strength that the factor ones did. I traveled an hour to a car show years ago and after sitting for a little while, the pressure blew the upper radiator hose off of the thermostat housing. My two cents is to use a good quality screw clamp or use two of them. Buy black ones or paint them so that they don't stick out as being incorrect if you are trying to have the engine look factory correct.

If you don't have a set of corbin clamp pliers, get them. Hey have recessed ends to fit over the ends of the clamp and the ends of the pliers turn so that you can get on the clamp from various angles. I think that I got mine from Eastwood but it was a long time ago.

Good luck.

I do have the proper pliers, but still very limited room to work. Appreciate the info on the housing.