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post #2 of (permalink) Old 07-05-2001, 03:33 PM
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Re: changing water pump on a supposed \'83 258

I had a similar problem. I pulled the 258 from my 1980 cj7 and replaced it with what was supposed to be a 1981 motor. I needed to use my pulley set up so when I installed all the pullies off the original - a lot of stull didn't line up. Same problem as you are having, the shafts on the two water pumps were of different length. Now when I need to mess with it I take the water pump in and match up the height from the mounting surface to where the fan mounts. I recall that it was maybe a quarter inch difference. So I guess what all this means is that there are at least two versions that bolt to the block ok, but don't fit otherwise. Take the one that fits to the auto parts store with you! John

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