Truck Cab Differences

[oldretiredafguy]

@kenb and I are in a search mode for a replacement cab for his ‘81 C10. Several questions:

1. Are there significant differences between round eye (‘73-‘80?) cabs and square light (‘81?-87) cabs?

2. Any difference between a 1/2 ton, 3/4 ton and 1 ton cab (other some firewall mounting holes for things like Hydro-Boost that would be on a HD truck (3/4+1 ton)?

Thanks guys, please load us up with all that knowledge rattling around in the brain buckets.

 

[ali_c20]

The cowl is different and the hood hinges, also wiper arm. Dash is different.

 

[wanderinthru]

@kenb and I are in a search mode for a replacement cab for his ‘81 C10. Several questions:

1. Are there significant differences between round eye (‘73-‘80?) cabs and square light (‘81?-87) cabs?

2. Any difference between a 1/2 ton, 3/4 ton and 1 ton cab (other some firewall mounting holes for things like Hydro-Boost that would be on a HD truck (3/4+1 ton)?

Thanks guys, please load us up with all that knowledge rattling around in the brain buckets.

I do not believe there are any. The hoods are different which makes the cowl different, Hood mounts are on the fenders...so.... The firewall "stuff" as you stated, though the holes for every thing is prob there, or can be put there. I have a cab off a 78....still on whats left, no title....which will bring up another issue with a cab swap?? Not sure how one would move the VIN plate and not get hasseled????

 

[75gmck25]

The early cabs also had a removable floor hump in the middle to allow for 4WD and 4 speed manual trans to fit. 2WD auto trans cabs used the low hump and had a little more leg room. I believe that later cabs ('84 and up?) may have tack welded the high floor hump, but I'm not really sure.

Bruce

 

[Termite_Delight]

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Hinge mounting and wiper mounting / linkage is different. Wiper and headlight switch locations are different.

 

[BKING33]

Would recommend staying with same generation. Too many little things to change out. Cabs same between diff weight classes.

 

[75Monza]

Not much in the dash sheet metal, working on moding '89 c30 cab to my '80 k30. So far, 4 speed C30 cab high jump is not removable, just cutting that section of the K30 floor out and welding mount section in C30 cab. My 80 dash pad a/c fits right in without mods. Later cabs have the headlight switch where wipers used to be since they were moved to the column.