My truck is back running after swapping engines. I put my 69IIa engine in my 74 SIII. One difference I see is that the water temp is low. It does not get any warmer than the top of the white cold mark on gauge (85 deg and sunny out). Not a big issue now but will hamper heat when it gets cold out. Original engine ran about 1/3 way up on gauge.
My thought is thermostat. One question before I change this is there a difference between the sending units of the two engines? Checked the connection and that looks good, same wiring harness ect.
My thought is thermostat. One question before I change this is there a difference between the sending units of the two engines? Checked the connection and that looks good, same wiring harness ect.
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