International Harvester Farmall 656 or SOMECA 670 (DT)?
Which should you choose?
The data can’t decide this. Power at the PTO shaft cannot be compared: the Farmall 656 has only engine power (gross or net not stated), claimed — a different quantity from power at the shaft; the 670 (DT) has only engine power (gross or net not stated), claimed — a different quantity from power at the shaft.
- The International Harvester Farmall 656 suits loader and hydraulic implement work better on this data: 96% (22.3 L/min / 5.9 gpm) more hydraulic flow.
- The SOMECA 670 (DT) suits heavy draft work (ploughing, cultivating) better on this data: four-wheel drive.
Generated by rule set compare@4 from the figures on the side-by-side table, allowed by route “the same stated configuration”. Measured figures are compared only with measured, claimed only with claimed, at the same test condition; differences within each figure’s tolerance are not called.
What decides it, question by question?
| Question | Farmall 656 | 670 (DT) | Call |
|---|---|---|---|
| Which puts more power through the PTO shaft? | 47.8 kW (64.1 hp)Traktorenlexikon, “Farmall Farmall 656” | 47.8 kW (64.1 hp)Traktorenlexikon, “Someca 670” | Not comparableNot comparable on power at the PTO shaft: the Farmall 656 has only engine power (gross or net not stated), claimed — a different quantity from power at the shaft; the 670 (DT) has only engine power (gross or net not stated), claimed — a different quantity from power at the shaft. |
| Which turns a litre of fuel into more work at the shaft? | — | — | No figureNo call on fuel efficiency at the shaft: no figure on record for the Farmall 656 and the 670 (DT). |
| Which pulls harder at the drawbar? | — | — | No figureNo call on drawbar power: no figure on record for the Farmall 656 and the 670 (DT). |
| Which pumps more oil for implements? | 45.5 L/min (12.0 gpm)Traktorenlexikon, “Farmall Farmall 656” | 23.2 L/min (6.1 gpm)Traktorenlexikon, “Someca 670” | AheadThe International Harvester Farmall 656 has 96% more hydraulic flow (22.3 L/min / 5.9 gpm) than the SOMECA 670 (DT) (both pump flow, as stated by the source). |
| Which lifts more on the three-point hitch? | — | 2,510 kg (5,534 lb)Traktorenlexikon, “Someca 670” | No figureNo call on three-point lift: no figure on record for the Farmall 656. |
| Which is heavier, for traction? | 2,835 kg (6,250 lb)Traktorenlexikon, “Farmall Farmall 656” | 2,740 kg (6,041 lb)Traktorenlexikon, “Someca 670” | EvenEven on weight (both unladen weight, as stated by the source): the difference is under the 10% threshold, too small to call. |
| Which may carry more ballast and load? | — | — | No figureNo call on maximum permissible mass: no figure on record for the Farmall 656 and the 670 (DT). |
| Which has the wider choice of gears? | Stepless (CVT)Traktorenlexikon, “Farmall Farmall 656” | 7 forwardTraktorenlexikon, “Someca 670” | DifferTransmissions differ in kind: the International Harvester Farmall 656 is stepless (CVT) and the SOMECA 670 (DT) has 7 forward gears — not called. |
| Which offers a creeper range? | — | — | No figureNo call on a creeper range: not stated for the Farmall 656 and the 670 (DT). |
| Which is faster on the road? | 25 km/h (15.5 mph) to 34 km/h (21.1 mph)Traktorenlexikon, “Farmall Farmall 656” | 24 km/h (14.9 mph)Traktorenlexikon, “Someca 670” | EvenEven on top speed (both top speed forward, as stated by the source): the difference is under the 10% threshold, too small to call. |
| Which offers more PTO speeds? | 540/1000 rpmTraktorenlexikon, “Farmall Farmall 656” | 540 rpmTraktorenlexikon, “Someca 670” | AheadThe International Harvester Farmall 656 offers 1000 rpm at the PTO, which the SOMECA 670 (DT) does not (as stated by the sources). |
| Which PTO runs independently of the ground drive? | dependent (stops with the clutch)Traktorenlexikon, “Farmall Farmall 656” | independentTraktorenlexikon, “Someca 670” | AheadThe SOMECA 670 (DT) has an independent PTO; the International Harvester Farmall 656’s is dependent (stops with the clutch). |
| Which drives on both axles? | 2WDTraktorenlexikon, “Farmall Farmall 656” | Two-wheel or four-wheel driveTraktorenlexikon, “Someca 670” | AheadThe SOMECA 670 (DT) is available with four-wheel drive; the International Harvester Farmall 656 is two-wheel drive (as stated by the sources). |
| Which is newer, and what about parts? | 1965–1972 | 1968–1971 | EvenSame era: production began within 5 years of each other. We hold no parts-availability data, so there is no call on parts. |
What does this mean in plain words?
- The International Harvester Farmall 656 has 96% more hydraulic flow (22.3 L/min / 5.9 gpm) than the SOMECA 670 (DT) (both pump flow, as stated by the source).
- The International Harvester Farmall 656 offers 1000 rpm at the PTO, which the SOMECA 670 (DT) does not (as stated by the sources).
- The SOMECA 670 (DT) has an independent PTO; the International Harvester Farmall 656’s is dependent (stops with the clutch).
- The SOMECA 670 (DT) is available with four-wheel drive; the International Harvester Farmall 656 is two-wheel drive (as stated by the sources).
- Even on weight (both unladen weight, as stated by the source): the difference is under the 10% threshold, too small to call.
- Transmissions differ in kind: the International Harvester Farmall 656 is stepless (CVT) and the SOMECA 670 (DT) has 7 forward gears — not called.
- Even on top speed (both top speed forward, as stated by the source): the difference is under the 10% threshold, too small to call.
- Same era: production began within 5 years of each other. We hold no parts-availability data, so there is no call on parts.
- Not comparable on power at the PTO shaft: the Farmall 656 has only engine power (gross or net not stated), claimed — a different quantity from power at the shaft; the 670 (DT) has only engine power (gross or net not stated), claimed — a different quantity from power at the shaft.
- No figure on record for every machine, so no call on: fuel efficiency at the shaft, drawbar power, three-point lift, maximum permissible mass and a creeper range.
← Every figure for both machines, side by side, with sources