Holman Moody Cooling Diagram

Does anybody have a diagram/ schematic of the HM cooling system. I am going to try to use a similar system on a 289 going into my Mustang. I like the idea of no Circ. Pump. Even some good photos would help. I have seen the system ,but I did not take photos. Thanks Curt

Gary, you must have been best engine runner up for the last several years. ;(

I have a photo of a HM on the front of an owners manual, and it does have a circ pump on it. I can see that there is a hose going from the lower t-stat housing to the raw water pump, and it also has the large J-tube from the t-stat housing to the bottom of the circ pump like a PCM. I can't see how they get the water into two inlets at the front of the block. This engine looks like a 289/302, but I can't tell for 100% sure. It has the outlet hoses going from the upper t-stat to the front of the manifolds, similar to a PCM Ford. What I can't tell is whether there are any hoses going into the rear of the manifolds. I also remember that the 351s and 302s were plumbed differently. Gary, yours is a 289/302, right? Sure is purty, BTW. Nice job!!

I have heard from at least three sources that Lee Holman (the son) is in the custom engine business in Charlotte. I'm willing to bet that if that is fact, he has some old manuals.

Interceptor 292s and 312s didn't have circ pumps either; instead they had a double-pocket raw water pump like Chryslers.    

Gary, Are there bypass holes in that thermostat?   Without them I can't see how the water circulates when the thermostat is closed.
I was looking at a PCM raw water T stat housing today. There is a bypass hole, about 3/8" leading basically from the raw water pump to the manifolds.

I will have to check but I think the bypass is like a normal Ford,cast into the thermostat cover

I did not know that until you mentioned it the last time Art. Luckily I can can get them rebuilt here relatively cheap and that at the time is what I did not knowing any better

I would in a minute but for 2 reasons- the stupid waterway sticker and there is absolutely 0 room for anybody elses boats

Hey, you H & M fans..... I was looking for something else today and I encountered four OEM "Hold 'em & Monkey" (as we used to call it) decals.... the 5-3/4" round ones that read "Powered by holman moody" and have the eagle with "Competition Proven" superimposed.

Now, they are peel-and-stick, so I don't know whether the "stick" part is going to work after all of these years. I did pull up an edge of the backing paper, and it does come off.

Are they worth 5 bucks apiece including postage??

Art