upgrade ?

[Larryd]

I have been tinkering with a 1952 1/2 ton 3100 for years and I have just added a 1987 chevy 1/2 ton long bedto the garage.
I have a couple questions about the NEW truck. It is a R-10, per the registration. What is the difference between a R-10 and a C-10?
How can I tell if mune has a large hump or small hump? is there a measurement?
thanks

 

[David Hall]

In 1987 Chevy changed the Line description and Chassis type.
C10/ 2WD 1981-86
K10/ 4WD 1981-86
R10/ 2WD 1987-89
V10/ 4WD 1987-89

http://www.lmctruck.com/icatalog/cc/full.aspx?Page=12

The tunnel hieght usually follows.
2WD low tunnel
4WD high tunnel

When I changed cabs I had to installed a high tunnel to clear the transfer.

 

[Larryd]

very good. thanks. don't go far, I may have more questions.
I do appreciate your help.
Larry

 

[David Hall]

Glad to help

 

[Pontiac1976]

87 last year of that body style first year of fuel injection.