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Originally Posted by 78SilveradoSWB
Actually the breakdown should be 73-80 and 81-87.
Front fenders are different.
Hood is different
Hood cowl (where the wipers are) is different
Radiator core is different
There are differences in the shape of the dash pad and the bezel.
Various differences in gauges over the years.
Earlier year door panels are different.
Starting in 79 they started to use the gas door.
After 78 model years, they started to use cats.
Tailgate differences requiring year specific tailgate panel to be used.
Mounting locations for truck bed are different, I believe.
These are some that I know of......  |
piggybacking off Mitch...
* 73-78 headlight Bezels are the same, 79-80 bezels are the same...except some '80 models has square headlights and special bezels. Not sure about the diffs from 81+.
* 73-80 hoods are basically the same, except 79-80 hoods had a decorative "ridge" across the fron of theirs, while the 73-78 had a smooth front. 81+ are the same I believe.
* 73-76 doors, innards, & door panles are different than 77+...but all 73-87 doors will bolt on to any 73-87 truck, Blazer, 'Burb (also 88-91 Blazers and Burbs).
*Steering columns and intermediate shafts are different, not to mention the steering wheels. I believe the breakdown on the columns are 73-78, 79-83, 84-87. But...they all bolt in, it is just the wiring, intermediate shafts, wheels, and levers that are different (headlights, cruise, etc.).
* 12 bolt diffs were used up thru '81 I believe, while the 10 bolt was used thereafter.
These are just some of the ones off the top of my head. I know there are others, but this is all I have time for right now.