Quote:
Originally Posted by 72farmer
I am having issues with this also.I tried the Gates 20843 and the water pump end is too small and will not slip on.
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Turn the hose around, you have it backwards. 1.75" connects to the water pump, 1.5" connects to the radiator. But 20843 is for 73-8X trucks. If you want to get the 20843 hose to work on a 67-72 radiator you will have to stretch the rad end (1.5" ID) over the radiator connection which is 1.75". The water pump size never changed on Gen 1 SBC 67-72,,73-87..., BUT the rad connection DID on GM trucks on the 73+ models. 1.75" connects to the water pump, 1.5" end connects to the radiator. I think I mentioned this on your other thread?