Which Year Boxes Will Fit? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Fraser Beatty · 05-29-2010, 11:28 PM

Hey all...I'm looking at replacing the box on my 80 GMC C25. Just wondering what years of boxes will crossover? Will any 73-87 box be useable and look correct, or will only certain years work? Reason I ask is I can pick up a good useable mid-80s box with only very light surface rust for $200, less than cost of repairing the one on the truck now.

bitchin85 · 05-30-2010, 12:02 AM

pretty sure the only diference is the earlier ones had a round gas filler hole and the later ones had a square one.. the tailgates are a little diferent but you can whitch your old one on if you want with your old brackets

68 TT · 05-30-2010, 09:18 AM

Quote:

Originally Posted by Fraser Beatty

Hey all...I'm looking at replacing the box on my 80 GMC C25. Just wondering what years of boxes will crossover? Will any 73-87 box be useable and look correct, or will only certain years work? Reason I ask is I can pick up a good useable mid-80s box with only very light surface rust for $200, less than cost of repairing the one on the truck now.

They will both be the gas filler door type beds so the only difference is the tail gate in your case.

They started switching over from the exposed gas cap beds in 78. Not sure if it was an option or a mid year change but some 78's (like my K20 built in Nov 1977) have the exposed gas cap and my brothers old 78 had the filler door type bed.

tucsonjwt · 05-30-2010, 05:19 PM

If you are talking fleetside beds, the beds themselves for 1/2 and 3/4 ton trucks will interchange, but the bolt patterns don't always match. Check the bolt location pattern and length of bolts, as well as the gas tank setup before you buy one for your truck. If you need to replace the filler neck and fill hose(s) with new ones, your $200 box might cost $400 - unless you find good junk parts cheap. I have noticed that used parts for these old trucks are not selling as cheap as they should for the number that are out there.

motornut · 05-30-2010, 08:38 PM

FYI
A neighbour of mine fixed a white pickup that it looks like he put a 88 size box on a earlier 80's year cab,the cab looked wider then the box.I can see about a pic it's close to my house

05-29-2010, 11:28 PM	#1
Fraser Beatty Registered User Join Date: Sep 2007 Location: Sarnia, Ontario Posts: 571	Which Year Boxes Will Fit? Hey all...I'm looking at replacing the box on my 80 GMC C25. Just wondering what years of boxes will crossover? Will any 73-87 box be useable and look correct, or will only certain years work? Reason I ask is I can pick up a good useable mid-80s box with only very light surface rust for $200, less than cost of repairing the one on the truck now. __________________ 1961 GMC 930- SOLD 1979 GMC C35 Single Wheel Camper Special- SOLD 1980 GMC C25 Camper Special- SOLD 1983 Chevrolet C10- SOLD 1983 Chevrolet Camaro- SOLD 1985 GMC C1500 (Dad's truck) 1985 GMC C3500 Crew Cab Dually- TRADED FOR 61 GMC 1997 Dodge Ram 1500 V6 Shortbox- Daily Driver

05-30-2010, 12:02 AM	#2
bitchin85 Registered User Join Date: Aug 2009 Location: Lambertville MI Posts: 962	Re: Which Year Boxes Will Fit? pretty sure the only diference is the earlier ones had a round gas filler hole and the later ones had a square one.. the tailgates are a little diferent but you can whitch your old one on if you want with your old brackets __________________ "I'll keep my guns, money, and freedom. You can keep the "change"

05-30-2010, 05:19 PM	#4
tucsonjwt Registered User Join Date: Jul 2007 Location: Tucson, AZ Posts: 3,191	Re: Which Year Boxes Will Fit? If you are talking fleetside beds, the beds themselves for 1/2 and 3/4 ton trucks will interchange, but the bolt patterns don't always match. Check the bolt location pattern and length of bolts, as well as the gas tank setup before you buy one for your truck. If you need to replace the filler neck and fill hose(s) with new ones, your $200 box might cost $400 - unless you find good junk parts cheap. I have noticed that used parts for these old trucks are not selling as cheap as they should for the number that are out there.

05-30-2010, 08:38 PM	#5
motornut 78K & 79C Jimmys Join Date: Nov 2009 Location: Ottawa Ont CANADA Posts: 7,901	Re: Which Year Boxes Will Fit? FYI A neighbour of mine fixed a white pickup that it looks like he put a 88 size box on a earlier 80's year cab,the cab looked wider then the box.I can see about a pic it's close to my house __________________ John 1978 GMCJimmy4X4-350/203 1979 GMCJimmy4X2-305/350



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