Minneapolis-Moline GB
VerifiedThe Minneapolis-Moline GB (1955–1959) was a four-cylinder G standard tractor — the last of the four-cylinder G line before the six-cylinder big-G era.
Identification & configuration
The GB closed out the four-cylinder G family (GT → GTA → GTB → GTC → GB); see the four-cylinder G overview. Don’t confuse it with the later six-cylinder big-G tractors.
Factory paint
Per the MMCI paint records, the GB wore the common Prairie Gold (PG2) with Cherry Red wheels. See the full paint reference.
What to verify
- Identity: confirm it’s a four-cylinder GB, not a six-cylinder big-G; decode the serial (ranges below).
- Configuration: verify the standard-tread configuration and fuel system.
Sources & Verification Notes
Years per TractorData; paint per MMCI; serial ranges per Jensales as cited below. We do not assert horsepower figures, and we flag production counts as collector-reported until confirmed against factory literature.
Serial Number Ranges
| Year | Serial range | Number type | Source confidence |
|---|---|---|---|
| 1955 | 8900001 – 8901500 | tractor plate | Verified Medium |
| 1955 | 9000001 – 9000850 | tractor plate | Verified Medium |
| 1956 | 8901501 – 8902601 | tractor plate | Verified Medium |
| 1956 | 9000851 – 9001525 | tractor plate | Verified Medium |
| 1957 | 8902602 – 8903401 | tractor plate | Verified Medium |
| 1957 | 9001526 – 9002145 | tractor plate | Verified Medium |
| 1958 | 8903402 – 8904251 | tractor plate | Verified Medium |
| 1958 | 9002146 – 9002655 | tractor plate | Verified Medium |
| 1959 | 8904252 – 8904252 | tractor plate | Verified Medium |
| 1959 | 9002656 – 9002656 | tractor plate | Verified Medium |
Engine
- 6.6 L Four-Cylinder (Gas / LP) (6.6 L, Gasoline, LP-gas)
Nebraska Tractor Test Results
Official, independently measured performance from the University of Nebraska Tractor Test Laboratory (public-domain reports). Figures are as-tested on a specific fuel/transmission variant — your tractor may differ. Look up the full report by test number.
| Test No. | Fuel | Year | Drawbar hp (max) | PTO/Belt hp |
|---|---|---|---|---|
| 545 | LP gas | 1955 | 62.14 hp | 70.55 hp (Belt) |
| 547 | Gasoline | 1955 | 46.26 hp | 65.64 hp (Belt) |
| 568 | Diesel | 1955 | 63.70 hp | 62.78 hp (Belt) |
Factory Paint Colors
Body, wheel, and powertrain colors documented for this model's era by the MMCI Paint Committee. The exact part-by-part configuration, year breaks, and footnotes are in the full paint reference. Individual tractors vary — special orders and regional exceptions were common, so confirm against your own machine.
- Prairie Gold (body)
- Cherry Red (wheels / trim)
Manuals & Literature
Factory publications cataloged for this model (MMCI / Floyd County Museum). We catalog the publication and its coverage — not its contents. Obtain copies from the museum or a reproduction seller.
Operator's Manuals
Parts Catalogs
Finding Parts
We don't publish part numbers we can't verify against factory literature. The authority for this model's part numbers is its factory parts catalog; interchange is serial- and configuration-dependent, so always confirm against the parts book before buying.
Factory parts catalogs
Carburetor
Documented carburetor for this model: Marvel-Schebler TSX-625 (MM #10A6268) (per MolineParts.com — MM Carburetor Applications (Marvel-Schebler / Zenith / factory)). Applications vary by year, fuel, and serial — confirm your tractor's number against the carburetor tag and your parts catalog before ordering a kit.
Documented parts
Cataloged Minneapolis-Moline part numbers documented for this model. Applications vary by serial, year, and configuration — confirm against your parts book before ordering.
Clutch
- 10A4756 — Clutch drive gear ring for dual-disc clutch
- 10A4757 — Complete clutch assy (Twin Disc Model B dual disc)
Oil Filter
- 10A14373 — Oil filter (spin-on)
Surviving Examples (collector-reported census)
No tractors registered for this model yet. The MinnieMo registry is owner-submitted and moderator-reviewed — help start the census.
Service Bulletins
Factory dealer service bulletins — supplements, field conversions, and fixes for this model. See the full reference.
- C 37 GB Supplement to S 152. Specs
- C 38 GB Supplement to S 714, Specs, Diesel
- C 48 GB Pre-Delivery Check Sheet
Sources & Verification Notes
Status: Verified
Primary source: TractorData — Minneapolis-Moline model listings tier 4
Last checked: 2026-06-01