Compare/Gravely 408 vs Gravely 424

Gravely 408 vs Gravely 424

Verdict: Gravely 408 vs Gravely 424

The Gravely 408 and the Gravely 424 are both lawn tractors — here is how they stack up on the figures that matter. Gravely 424 leads on rated power with 10 hp against 8 hp. Gravely 408 is the lighter machine (372 kg vs 408 kg), which helps on soft ground and transport, while the heavier model carries more ballast for traction-limited draft work. Gravely 424 holds more fuel (18.9 L vs 4.3 L) for longer stints between fills. Gravely 408 is the newer design (1970 vs 1967). In short: choose the Gravely 424 for outright pulling power, or the Gravely 408 if a tighter budget and lighter footprint matter more. Compare the full spec tables below before booking a demo.

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Tell us about your operation

Acreage600 acBudgetMain crop / use

Fit & specs

Gravely

Fit score

Best match

Clear

Gravely

Fit score

Best match

Clear

Rated power

8 hp

10 hp

Confidence

40%

Guide price

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Overview

Manufacturer

GravelyReference

Four gears with forward-reverse control.Reference

Two-speed shift-on-the-move affects transmission and PTO speed. Additional two-speed range for transmission can be shifted only when stopped. Right-hand directional clutch lever controls forward and reverse.Reference

Total built

6,689 (1970-1975)Reference

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Steering

—

manualReference

Engine

Fuel tank

4.3 LReference

18.9 LReference

Displacement

18.6 ciReference

30 ciReference

Bore/Stroke

75 x 70 mmReference

90 x 76 mmReference

Power (gross)

6.0 kWReference

7.5 kWReference

Rated RPM

3800Reference

3600Reference

Starter

electricReference

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Starter volts

12Reference

Sparkplug

871 RJ8CReference

Champion H-10Reference

Sparkplug gap

0.635 mmReference

Oil capacity

2.8 LReference

4.7 LReference

Air cleaner

—

single dry elementReference

Intake valve clearance

—

0.229 mmReference

Exhaust valve clearance

—

0.457 mmReference

Power

—

7.5 kWReference

Transmission

Gears

4 forward and reverseReference

Oil type

SAE90W EPReference

SAE 90W-EPReference

Transmission

—

Swiftamatic 8Reference

Clutch

—

friction coneReference

Dimensions

Weight

210 kgReference

408 kgReference

Front tire

13x5.00-6Reference

16-6.50x6Reference

Rear tire

18x8.50-8Reference

23-8.50x12Reference

Lawn/turf front

13x5.00-6Reference

16-6.50x6Reference

Lawn/turf rear

18x8.50-8Reference

23-8.50x12Reference

Length

143 cmReference

191 cmReference

Width

83 cmReference

92 cmReference

Height

93 cmReference

109 cmReference

Shipping weight

168 kgReference

408 kgReference

Wheelbase

—

116 cmReference

Clearance (front axle)

—

25 cmReference

Clearance (rear axle)

—

16 cmReference

Front tread

—

77 cmReference

Rear tread

—

71 cmReference

Gravely 408 attachments

408 Serial Numbers

1970

1003Reference

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1971

1846Reference

—

1972

4022Reference

—

1973

4744Reference

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1975

200000Reference

—

1976

205039Reference

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1977

259009Reference

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1978

311672Reference

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Final

372210Reference

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Electrical

Ground

negativeReference

Battery volts

12Reference

Attachment overview

34" Mower deck

Type

belt-driven gearReference

shaft-driven gearReference

Cutting width

86 cmReference

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PTO & Hydraulics

Gravely 424 attachments

424 Serial Numbers

Location:

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Ahead of rear axle on left side.Reference

Fit score weighs budget, operation size, crop match and data confidence against the details above. It’s guidance, not advice — always confirm with a dealer demo.