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09-25-2020 #1
I need help-bigger RAD needed for 64 Olds F-85, some fabrication will be required
Guys, finally got this 1 of none 64 F-85 on the road however, long story real short runs to hot in the Texas heat. 64 Olds F-85, Cutlass's came with a V-6 or a small block 330. Currently has BB Olds 400E with a 330 small block Champion 3 row aluminum rad that fits the 1 year only core support with VERY little room left between the Flex-a-lite dual 2500 cfm dual PULLER fans and the water pump pulley. This rad is rated to support up to 600 HP?? I don't think so. At this point my idea was to cut off each side of the core support and drop it about 3 inches, weld it back using C channel steel I already purchased. That will allow to drop in the larger 65 442-GTO rad-which is about 3 inches deeper-442's came out in 65 with BB 400E. Either way, max width is 25.5-26 inches by 22.5 tall down flow type rad. Couple of considerations is I would like to try another brand of rad and different dual fans. At some point I'm going to pull the 400E and build it 475-500 HP range , so I'm thinking I only want to do this 1 more time! I have learned that the CFM ratings are with nothing in front of the fan. A lot of trail and error on this over heating problem ( drove me nuts) and the parts are new. Timing, Q-jet, 160 degree Robert Shaw thermostat, Flow-Kooler water pump, is all in check great. So I decided to remove the condenser in front the rad and bingo the 2,500 CFM rated fans could NOT pull in enough (weak motors?) air in 100 degree Texas heat. BUT dang it still would eventually tip over 200 degrees in traffic with 95-100 degree ambient temps. So this is where I'm at , need a larger cooling capacity rad and maybe a 4000 CFM rated Derale dual fan set up if I can make another 1/2 of room between the fans-shroud and water pump pulley. Is there any cross flow rads that will fit that space?, 2-row or 3? Should I try a larger rad and re-install the Flex-a-lite fans first before I lay out more $$ or just get a higher 4000 CFM rated fan set up with bigger motors? Please note: this is my hobby, I don't build cars like most of you guys here so any assistance will be greatly appreciated. The pictures of the core support is not mine, but that's what I thinking to do. Thanks.
64 F-85 post car Resto-Mod project-my RV when I retire