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Thanks...That helps me partially. The actual clearance issue I am having is not with the fan itself, but the large round portion of the fan clutch that faces the radiator core. This is where the 1/4" separation is. I have plenty of space between the fan blades and the radiator core. This is all after market items and as far as a shroud goes, the American Eagle product line of Champion Radiators doesn't have a shroud available for my application. The Champion side does have the combo of radiator/shroud offered. I do have a MoPAR shroud but it will require some "fabbing up" to make it adapt to the American Eagle radiator. I also have the stock original radiator as well but I am reluctant in using it as it has been checked for leaks, but in reality it needs a re-core and it is just not in the budget at over 300.00 based on my latest quote. And that was the cheapest. I want to stay with the Aluminum radiator as it will dissipate the heat better than the OEM one especially out here in the HOT West, and may just opt for a 16" pusher fan in place of the water pump fan set up....Thanks in advance....

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1/4" for the fan clutch is very close. If you have a thermostatic clutch it is designed to engage/disengage properly based on the air temp passing through the radiator. At 1/4" you will get radiant heat from the radiator that will prematurely engage the fan clutch. This will lead to the fan working more than it really needs to cool your application. Still sounds like you need a shorter fan clutch to me. This will set the fan and clutch back further from the radiator.

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I have been watching this post now for the past couple of days and have yet to have anyone who has responded here to validate if, "1/4 of an inch separation" between the clutch fan and the radiator core is an acceptable distance. I am having a similar situation with my build...383 non A/C with an aftermarket aluminum Champion/American radiator. I am using the Jaguar clutch from Napa as it has the shortest shaft length of any out there, a 7 blade MoPar fan, without a fan shroud at present. It would be nice if someone here could validate that that distance will work properly. A simple yes or no would suffice without all the additional rhetoric. Please try to stay on point...

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I have a 70 roadrunner,440,4 speed,22 inch radiator,with a shroud.I want to put a clutch fan on it,bought one from Mancini Racing at Carlisle,and it doesn"t fit.I looked up a mopar performance one at a local dealer and the measurements only allow a 1/4 of an inch between the fan clutch and radiator,not enough in my opinion.Any body else encounter this problem or have any suggestions? thanks.

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I have almost the same setup in my 70 RR.
383, 4 speed, 3 core 22", shroud..
You have to use a short clutch fan either the Hayden Jag one or the Mopar TRW OE FC28, the clutch fan can only be a max of about 2.75" in height. This puts the fan 50% into the shroud and about 1" from the fan to the radiator, enough clearance to change the fan belt.

I prefer the FC28 over the Hayden as it has a closed mounting hub compared to the universal slots of the Hayden. For cooling my stroked 383 runs about 175 degrees in SoCal traffic on a hot day. I found my FC28 @ a garage sale for $30 still in a box but they are harder to find.

I hope that helps..

Just my $0.02..

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I have been watching this post now for the past couple of days and have yet to have anyone who has responded here to validate if, "1/4 of an inch separation" between the clutch fan and the radiator core is an acceptable distance. I am having a similar situation with my build...383 non A/C with an aftermarket aluminum Champion/American radiator. I am using the Jaguar clutch from Napa as it has the shortest shaft length of any out there, a 7 blade MoPar fan, without a fan shroud at present. It would be nice if someone here could validate that that distance will work properly. A simple yes or no would suffice without all the additional rhetoric. Please try to stay on point...

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I have been watching this post now for the past couple of days and have yet to have anyone who has responded here to validate if, "1/4 of an inch separation" between the clutch fan and the radiator core is an acceptable distance. I am having a similar situation with my build...383 non A/C with an aftermarket aluminum Champion/American radiator. I am using the Jaguar clutch from Napa as it has the shortest shaft length of any out there, a 7 blade MoPar fan, without a fan shroud at present. It would be nice if someone here could validate that that distance will work properly. A simple yes or no would suffice without all the additional rhetoric. Please try to stay on point...

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So if he has the Jag clutch already, what would be a shorter one?

Time for an electric fan only?

Torque strap the engine and hope for the best?

Just hope for the best?

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As I mentioned above, another possibility is to heat the saddles and move the radiator core forward so it is even with the core support. There is usually .50"-.75" of additional room to be found here. I had the shop do this with my 3 core stock-type radiator.

Early B's are a notoriously tight fit for a clutch fan. I'm using the stock, early K member, repositioned 3 core rad w/shroud, Hayden clutch and torque strap. I have at least .75" clearance between the rad and clutch. I see no reason why this type of set up wouldn't give even more room in a later application.