drive i was on here a while ago asking about a 37 chevrolet fire truck with a blown engine. i think it's a 216, but i'm not sure. in any casy i have acquired a gmc 6 in good shape, but i don't know if the motors are compable. the gmc was not in a vehicle so i have no vin #. the only #s i can find are on a plate on the left side. 23624295. and another set of #s 2185849. is there any way i can determine the year and size of this motor. thanks.