As Torque1st has sugested. I have decided to try the original shroud rather than an electric fan for now. My question is what shroud did I have. How many different shrouds / radiators are their for these trucks. I have a 3 core radiator with auto trany lines. I hope this is a common one and not to hard to find.

Thanks Bill

 

What engine?

 

The fan shrouds are different by depth & mounting.

The 351m/400 takes the same shroud because they both use the 2 core rad.
You can put a 3 core rad on but,then you have to get the 460 shroud.

The 460 uses a 4 core rad thus, the shroud has have less depth.

 

Its a 400 cid with a 3 core radiator. So all the 3 cores use the same shroud. Then all I need to find is a 3 core radiator and its shroud will work on mine right.

 

The stock 351m/400 shroud will work on your engine .
The tanks on the radiator are the same width but they have 3 row core rather then a 2 row core.
Ford part number D7TA-AA and D7TA-SA will work for you !
77-79 trucks with the 351m/400 with that part number are the ones you want to look for.

Sorry Dennis

 

Are there different width radiators on AC -v- Non-AC trucks?

 

Okay, what is the depth of a 3 core rad shroud ?

The dimension from Rad mount > toward engine

 

The 2 part numbers I posted are for :

D7TA-AA standard or extra cooling (351m)(F100)
D7TA-AA standerd extra and air (351m)
D7TA-AAtandard extra and air (400)
D7TA-SA standard or extra cooling (351m/400) These are all for '77-'79 trucks F100-F350
Why would ford make 3 different shrouds for the same engine (demensions)
The part store that I do business with only sells 3 row radiators they are considered stock replacement

Like I said before the tank is the same size for the 2 row and the 3 row the only difference is the core . Look at a 2 row radiator and then look at a 3 row measure the tanks and you will find the tank is the same for both.
One other thing is how does the radiator mount on the support.
is the radiator have a front flange or a rear flange.

 

AFAIK The flange that secures the radiator to the support and also supports the shroud is the same thichness whether it is a 2, 3, or 4 core radiator. The 4 core radiator was an option on some HD towing packages with certain engines.

The difference in length of the various engines would either have to be made up by shifting the motor backwards which is limited by the firewall or changing the length of the fan support or the shroud.

None of those part numbers is for a 460.

 

Okay, I'll concede.

I was worried about the distance one would have to attach it.
There is already minimal room with the 429 / 2 core to get the bolts off the fan.

To put the shroud on you have to remove the Fan & Fan clutch (if equipped), Then slip the shroud on and have it hang there until you bolt the fan/clutch on, then you attach the shroud.

 

I did the same thing the last time I worked on my 400.

 

I have a 351 that has a 4 core radiator from a 460 with A/C and auto trans and extra tranny cooler. Works wonders when towing. Most 460's in F350's had 4 core setups. I nfact all the while that I have been picking through junkyards I have never seen a 460 or 400 with a 3 core radiator. They have been 4 and 2 cores respectively.

 

My OEM radiator in my 78F250 400 was a three core. I replaced it with a 3 core, I wish I had used a 4 core, but at the time the price was right for the 3 core, since it had some bent fins from shipping.

 

I am not trying to say that they don't exist I have seen them in replacements and aftermarket but just never one from the factory.

 

OK the point is find a shroud off of a truck that had either a 351m/ or a 400 and you will be all set