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Discussion Starter · #1 ·
I've been building these rear ends for years, but I still don't know exactly what years are the same in the later Novas. I have seen '76 Novas with the 60 inch wide rear end and the spring perches 42 1/2 inches on center, and I have seen later Novas with the 61 inch wide rear end with the spring perches 45 1/4 on center. When did they change it and did the frame get changed too? I can't figure out why GM would change the rear end when the car was about to go out of production.
 

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My 75 and 77 Nova have the same spacing on the springs. Both had 8.5" differentials. All 75's had the 8.5, after that only the V-8's, 6 cyl got the 7.5" and in 76 only the 350 got the 8.5. I believe 68 - 79 were the same dimensions, just differences in the internals. Good to see you over here from Team Chevelle, (aka 64elcamino) your expertise will be a great asset.
 

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Discussion Starter · #3 ·
I know of at least one '78 or '79 that had the wider rear end in it, and I have seen a few more with the wider rear end, but I'm not sure what years these were. I have bought several 8.5s up to '76, but not later than that. I have also run across several of the 7.5s in these cars. It is hard to buy these rear ends over the phone or internet when I can't measure them to be sure what I am getting. I was just wondering why some of them have the wider rear end.

I hope this sight gets as popular as the Camaro and Chevelle sights. There hasn't been much trafic here so far.
 
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