That will be a '78 only issue with the bearings with matching rotors. '79 up all us the same bearings.The wheel bearings for the rotors changed through the early years. You should be good if you search for 81 cab/elky parts. You can also use rockauto to see differences in the years and part numbers.
As I have learned through this site, the '78 steering intermediate shaft is also different than '79 up.That will be a '78 only issue with the bearings with matching rotors. '79 up all us the same bearings.
GM and GM dealers reserve the right to make changes in vehicles built and/or sold by them at any time without incurring any obligation to make the same or similar changes on vehicles previously built and/or sold by them.
I found that out years ago when I picked up my '78 manual floor shift column.As I have learned through this site, the '78 steering intermediate shaft is also different than '79 up.
Last month, at the beginning of June 2022, a 1979 GMC V6 3.81L 231 CID came by me with my buddy, Roy Mosqueria, who was given the truck by a long-time friend, and he has owned 5 Elcos. The plan was that we were just going to flip it. Well, after a few days of it being in the driveway, broken windshield, wells on the ground, the body was straight with only an edge of rust on one back part of the window, clean lines, I kinda fell in love with it and bought it off my friend who needed a driveway to put it in, so we could flip it. Within 4 days, I had pulled out the carpet and ordered a carb, gas tank, and all fuel and related hoses. Before we got started, we hit the carb with brake cleaner and it fired right up. I knew we had a winner. As of today, I have lovingly put this truck back into shape, with all kinds of basic things. My goal is to get it started, put the dash back in, and take it to my buddy to put new springs, deal with the brakes, and check it out, as I will do the rest.
One thing about this one, is it's a Caballero, and you just can't go into a store or online, and say you have a Caballero as they look at you funny. 99% of the truck is an Elco, so that is what I tell most.
One thing I have found is that there are very few original V6 3.8L 231 in existence. Nobody has a belt diagram of this car. I spent hours looking for one and well... nothing. We took out the CA emissions so it would run better for now. I have all kinds of goodies coming from DixieRestoration. I really like Paul over there. They seem to be a lot more eager to assist you than opgi.
I am replacing the heater core, which is a real b*tch to pull, but i got it, and now i have to leave it apart till i get the new rubber for the vent door. I have a youtube channel and i have been taking videos of lots of DIY things that I will soon post. it has been fun and keeps my blood pressure down.
Love to hear your stories and we can all help each other. e
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