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73-87 Chevy _ GMC Trucks => 73-87 Chevy & GMC Trucks => Topic started by: 80heavychevy on February 08, 2013, 03:01:40 am

Title: Difference between 73-76 stepside box and 77-87 stepside box HELP!!
Post by: 80heavychevy on February 08, 2013, 03:01:40 am

So i am asking to see if anyone can tell me the difference between the two? lights, bumpers, dimensions, anything! ect. For my build (1980) of course it would be ideal to go with a 1980 box, but i am curious as to what they both entail in terms of differences.

any information would be much appreciated!

Title: Re: Difference between 73-76 stepside box and 77-87 stepside box HELP!!
Post by: Captkaos on February 08, 2013, 01:32:26 pm

The actual box (sides, front, tailgate, crosssills steps are identical.
The difference in the 73-78 (note range) and the 79-87 fenders is the gas tank opening style.  73-78 had a round hole, 79-87 had a square door.

Title: Re: Difference between 73-76 stepside box and 77-87 stepside box HELP!!
Post by: 80heavychevy on February 09, 2013, 03:22:36 am

Okay thanks, this makes things a whole lot easier!

Title: 1982 8ft box on 1976 8ft chassis
Post by: kcwis on September 14, 2016, 08:58:19 am

The second from front mounting bolt holes are in a different location , other than fuel doors is anything else different?

Title: Re: Difference between 73-76 stepside box and 77-87 stepside box HELP!!
Post by: Peter S on September 14, 2016, 09:30:03 am

The 78 & down fenders had side marker lights, 79 & up had the side marker light incorporated into the tail lights.

Title: Re: Difference between 73-76 stepside box and 77-87 stepside box HELP!!
Post by: kcwis on September 14, 2016, 10:48:24 am

I should have posted that the 82-76 box swap is fleetside,sorry