what's the difference between a 1954 gmc 100 and a chevy 3100?

Question

Accepted Answer

The **1954 GMC 100** and **Chevrolet 3100** are essentially corporate siblings with the same underpinnings—they're mechanically identical twins wearing different badges.

**What's the Same:**
- Both are ½-ton pickups built on GM's "Advance Design" platform (Chevy's name) / "New Design" platform (GMC's name) that ran from 1947-1955
- Same frame, same chassis, same engine and transmission options (originally inline-six engines, later V8 conversions)
- They share production lineage as Chevy and GMC's first major post-WWII truck redesign

**The Key Differences:**
1. **Styling**: The most obvious difference is the grille—the GMC has a horizontal-bar grille while the Chevy 3100 sports the iconic vertical "winged" grille with five horizontal bars. GMC also had different badging and trim detailing.

2. **Historical Positioning**: GMC was always positioned as the upmarket, premium sibling to Chevrolet—aimed more at commercial/fleet buyers who wanted a "professional grade" truck.

3. **Market Values Today**: Interestingly, the Chevrolet 3100 currently has stronger collector demand. According to Classic.com market data, Chevrolet Advance Design trucks average around **$48,548** with strong activity (98 currently for sale), while GMC New Design trucks average around **$35,752** (only 16 currently available). The Chevrolet has seen top sales reach $511,500 vs. $123,200 for the GMC equivalent.

That specific 1954 GMC 100 you're looking at is listed at **$129,900**—well above the market average, but it is a custom build with automatic transmission and low indicated miles, which commands a premium.

Want me to show you some comparable Chevrolet 3100s or help you dig deeper into either market? [GMC New Design Market](https://classic.com/m/gmc/new-design/) | [Chevrolet Advance Design Market](https://classic.com/m/chevrolet/advance-design/)

Lot 6450: 1954 GMC 100

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Lot 6450: 1954 GMC 100

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