The end of the story ! Ok the engine was a 248 not the 302 . I got a new GMC desert radiator and the fan would not fit with the new radiator . Got a new smaller pitch fan and that did not work (it just touched the radiator ) . Had to do what I was not wanting to do - modify the new radiator . Cut the mounting flanges off . Took the spot welded - mounting yoke with it's mounting flanges off of the old radiator . Some chopping and fitting on that and the new radiator slid into the the modifyed yoke-flange setup . Slid the whole thing into the trucks radiator frame and
it fit like a glove . Bolted her up put in a new thermostat put on new hoses added fluid and fired the puppy up . YAY!!! No problems and the next day ran the Big Bolt in her first 4th of July parade and again no problems . I don't know if my trucks set up different in it's radiator mount set up but the new repro-radiators mounting flanges arn't recessing the radiator away from the engine enough and the angle is off also . Live and learn . Thanks to all who have sent tips
. ED
