Author Topic: 83 chev K20 military  (Read 883 times)

Offline 101 airborne

  • Newbie
  • Posts: 10
  • Newbie
83 chev K20 military
« on: April 25, 2018, 07:34:33 PM »
What is the max tire size with out body or suspension lift mods ? I have 4.56 gears with 16.5 x 9.50 which measure about 29.5 tall. I want to change to 16 inch rims but don't know which backspacing to get to work with bigger tires for clearance. Thanks from Kansas .

Offline Irish_Alley

  • Tim
  • Global Moderator
  • Senior Member
  • *****
  • Posts: 13271
  • Family is not an important thing. It's everything.
Re: 83 chev K20 military
« Reply #1 on: April 25, 2018, 08:04:15 PM »
i may be 100% wrong but i thought all military trucks were k30s except for the k5

also take a look here
http://forum.73-87chevytrucks.com/smforum/index.php?topic=31301.0
i did a little information gathering about tires/lifts. i have a 91 k3500 crew cab, with no lift and i was able to squeeze 33s under mine
If you canít tell yourself the truth, who can you tell it to?~Irish_Alley

When you have eliminated the impossible, whatever remains, however improbable, must be the truth ~Sherlock Holmes

Offline 1967KaiserM715

  • Junior Member
  • ***
  • Posts: 914
  • 1985 GMC K1500 w/ 6.5 TD
Re: 83 chev K20 military
« Reply #2 on: April 25, 2018, 09:13:41 PM »
Canadians used K20 and K30, not to familiar with the time frame, but did use GM trucks earlier then the US.

As for tires and backspacing, a no lift, 33" may fit, 32" definitely.  A thinner rim and 235/85/16s will look good, with a 4" backspace. As long as there is less then 4" backspace I think any other width of tire can also be accommodated.

Sent from my SM-S920L using Tapatalk

Current Vehicles:1985 GMC K10(Daily) 1991 GMC K2500(Daily) 1975 Beetle(not running) 1985 Mercedes 300D(not running) 1952 M35    1967 M715(not running)
 1986 Chevy K30(under repair)