Tommy Posted August 4, 2015 Report Share Posted August 4, 2015 The previous owner of my 1941 P12 mounted a later model Mopar radiator 4" from the fan, which will not cut it here in Key Largo.I originally planned on using a 2" fan spacer to move the fan closer to the radiator. I finally decided to do it right the first time. I pulled out the old radiator and mounts installed by the PO.Spoke with Jeff at Champion Radiator. It looks like the unit out of a '69 Mustang may work.Anyway, having the radiator out of the way allowed me to get a better look at the front of the motor and the front cross member. The car is fitted with a later model 25" motor and I was curious about any modifications that were made to accommodate the larger engine.As you can see in the pictures, there is not a lot of room between the crank pulley and the front cross member- around 1". Since I plan to install A/C in the future, I'll need to install a double pulley on the crankshaft.I think I'll have enough room to install the pulley, but just barely. Haven't figured out if there would be enough room to get the belts on, though. :/Looks like I'll never get that crank pulley off without raising/removing the engine. Quote Link to comment Share on other sites More sharing options...
DonaldSmith Posted August 4, 2015 Report Share Posted August 4, 2015 (edited) Don Coatney will chime in with his photos of relieving the crossmember to accommodate the pulleys. I did a more cruder version: (I'll post the photos when I find them.) Edited August 4, 2015 by DonaldSmith Quote Link to comment Share on other sites More sharing options...
Don Coatney Posted August 4, 2015 Report Share Posted August 4, 2015 When I installed a 25" engine in my P-15 I modified the front cross member using a half pipe. This gave me ample clearance. I use an electric pusher fan with my new Champion radiator. Quote Link to comment Share on other sites More sharing options...
ACJCF2 Posted August 7, 2015 Report Share Posted August 7, 2015 My buddy had a Mustang radiator in his 48 P-15 coupe and his 273 SBM would get hot with both a pump mounted can and electric can. He had the 48 radiator cleaned and checked and end of running hot. If you can keep and use your original radiator. Jim Quote Link to comment Share on other sites More sharing options...
Tommy Posted August 7, 2015 Author Report Share Posted August 7, 2015 My buddy had a Mustang radiator in his 48 P-15 coupe and his 273 SBM would get hot with both a pump mounted can and electric can. He had the 48 radiator cleaned and checked and end of running hot. If you can keep and use your original radiator. Jim Since the motor was replaced with a later model 25" block, the stock radiator won't fit. The new radiator will have to mounted on the front side of the original bracket and tuck up under the front sheet metal. Quote Link to comment Share on other sites More sharing options...
james curl Posted August 7, 2015 Report Share Posted August 7, 2015 Check out Don Coatney's pictures of his installation of the long block engine. He ran his original radiator for a long time by trimming some of the flange on both sides of the hood opening to allow the radiator to move foward. Quote Link to comment Share on other sites More sharing options...
Tommy Posted August 8, 2015 Author Report Share Posted August 8, 2015 (edited) The front sheet metal on the 41 tapers more rapidly than on the later model. It would require cutting not just the flange but the body metal, too. Edited August 8, 2015 by Tommy Quote Link to comment Share on other sites More sharing options...
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