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The 7 blade fan blades I had found for thermostatic clutch assemblies were too big for my shroud. This is a 22 inch radiator, so the opening in the shroud is less than 20 inch. The 7 blade fixed fans I found so far were on E-bay, and I missed out on those. The title of this thread, Do all...

Finally found the time to work on it a little. Haven't had any luck finding a 7 blade fan, but that is something I want to try. I re-installed the Milidon thermostat ( 180 degree ). I've previously experimented with a 6 blade steel fan ( Jegs ), and a Mopar performance thermostatic 5 blade...

This is a brand new( as of December ) radiator that up until recently has not been used on the road. I have checked it with a shop light, and have lightly sprayed it with a garden hose...nothing appears to be clogged in regards to airflow . It has a light coat of flat black as delivered from U S...

I see what you are getting at.... When testing the thermostat in water, I was more interested in how large of an opening the high volume t-stat had, as compared to a normal one. I understand what you are saying about misting the radiator, and driving in the rain. So I'll put the high flow back...

Thanks for all of the input!!! Based on what I've read, and the fact that the upper radiator hose was reading 221 degrees and the lower was 210, it has to be airflow and/or flow through the radiator. So I tried an experiment tonight. I removed the Milidon high volume thermostat and tested it...

I'm using the Milidon high flow thermostat that was recommended with the Milidon high volume water pump. I believe the thermostat was rated at 185. I agree about moving water too quickly through the radiator, but the problem was there using the stock water pump and 180 thermostat. I've...

The only difference I can see ( and this is a stretch ) between this engine/setup from all of the other 273/318/340 engines I have had, is that the 67 Cuda radiator has the inlet and outlets on the same side. It has a different timing cover, with the degree marks on the passenger side. The water...

Agreed...that's why Im asking for help. The engine is a stock bore 1968 340, with a stock 68 340 cam degreed in straight up ( .444 lift intake and exhaust). Carb is jetted slightly over base on primary , 56/65 jets, 8.5 power valve. Engine idles cleanly at 650 rpm in gear, 17 inches of...

I"ve added a factory shroud. I've also tried a Mopar Performance factory style clutch fan and fan. Didn't seem to help. When i purchased the car, it had a very sick 273 2bbl. Car would overheat anytime I idled in traffic when it was hot out. No factory shroud, 4 blade fixed fan. I just tried to...

I've owned a wide variety of muscle.cars, from Mustangs to Camaros to Challengers without any significant overheating problems..My current ride has frustrated me for years. After several different engines, and engine combinations over the years, one thing remains the same. If I idle for more...

Not sure exactly on the mix other than it is not 50/50. Probably more like 70/30. One more thing to look at. Thanks.

Yeah, this is a fresh rebuild, but a long-term project. Have less than 50 miles on the new engine. Haven't had time to do a leak-down on this one yet. Maybe this weekend?

Got some time in tonight on the car. When hooking up the timing light and vacuum gauge, noticed 2 things. First, the lock-down bolt on the distributor was loose. Timing was at 20 degrees instead of 10 where I had set it. Also, the cap to block off the vacuum port under the carb was split. So i...

Pulleys are the factory originals. as far as I know. Never gave it any thought about the hood being sealed to the radiator support...Have to give that a look.

Current combo is .020 over 340, stock cam and exhaust manifolds. Wiend intake with Holley 570 carb. Cooling system consist of New 3 core radiator, Milidon performance water pump and matching thermostat, new factory fan shroud and MP clutch fan from Mancini racing. Fan is app. 1/2 inch from...

Owned our convertible for 12 years now, and have tried various combinations of radiators, water pumps, shrouds , fan blades etc. to no avail. Finally determined ( in my head LOL ) that it was an engine problem after finding 18% - 24% leak down in the cylinders. Built a fresh 340. everything...

Some here my have had good experiences with Wizard.....I did not. Purchased one from them at the Mopar Nats last year. Gave them all of my info, including numbers off the factory 2 core radiator along with a drawing and measurements. Made 3 trips at the show from his booth to my car in the show...