The bolt pattern on a 1983 Chevrolet K20 is typically 6x5.5 inches (also known as 6x139.7 mm). This pattern is common among many GM trucks and SUVs from that era. It's important to confirm this information against the specific vehicle's specifications, as variations may exist based on modifications or different configurations.
Bolt pattern for WHAT???????
The 400 tranny on a 1983 Chevy 6.2L K20 diesel have very high pressure.
5x5
4x100
1983 Chevrolet S-10 Pickup Bolt Pattern: 5x120.65. Center Bore: 70.3. Hardware:12x1.50 Lug Offset: 00-20mm
Bolt pattern for most rwd chevys is 5 x 4.75. Camaros, Novas, Monte Carlos and so on.
There are a number of trucks that have a 5 on 5.5 bolt pattern. From Dodge alone, these include the Durango (from 2004 on), the Dakota (from 2005 on), and the Ram Charger (from 1979 to 1983). The Kia Sorrento from 2003 on also has this bolt pattern.
5 X 4 3/4
14 or 15 inch lug pattern is 5 on 4.5
Most likely its a Corporate 10 bolt front, and 14 bolt rear. Prior to 77 the front axle would have been a Dana 44.
5x4.75 or 5x4 3/4 same thing
The primary difference between the 1983 Chevy K10 and K20 lies in their payload capacities and drivetrain configurations. The K10 is a 1/2-ton truck, designed for lighter loads, while the K20 is a 3/4-ton truck, offering a higher payload capacity and typically a more robust suspension. Additionally, the K20 may come with heavier-duty components and options for four-wheel drive, making it better suited for off-road and towing applications. Overall, the K20 is built for more demanding use compared to the K10.