John Deere tractor · 1975-1978

John Deere 8630 Tractor

The John Deere 8630 is a large articulated four-wheel-drive tractor built from 1975 to 1978. It delivers about 225 PTO horsepower and is one of Deere's best-known 1970s high-horsepower tractors for major tillage work.

Production years

1975-1978

Engine

John Deere diesel, 6-cylinder, 10.1 L, turbocharged

Power

225 PTO hp, tested

Weight

24,150-24,500 lb

John Deere 8630 specifications

Production years	1975-1978
Engine	John Deere diesel, 6-cylinder, 10.1 L, turbocharged
Power	225 PTO hp, tested
Transmission	16-speed partial power shift
Drive	Articulated four-wheel drive
Weight	24,150-24,500 lb
Fuel type	Diesel
PTO	Independent 1,000 rpm

What the 8630 is used for

The 8630 was designed for large-scale, high-draft work, including plowing, chisel plowing, and disking. Its articulated 4WD chassis, large fuel capacity, and 10.1 L diesel were intended for long days with large implements.

Owners now use good examples for collector events, vintage tillage, and selected heavy farm jobs. Its capability remains impressive, but ownership requires diligent maintenance and knowledge of older articulated tractors.

Why the John Deere 8630 stands out

The 8630 represents Deere's major Generation II articulated-tractor era and pairs a Sound-Gard cab with substantial tested power. It remains popular for its unmistakable size, historical importance, and strong collector following.

Buying a used John Deere 8630

Inspect engine condition, cooling capacity, turbocharger, articulation joint, driveshafts, transmission shifting, hydraulics, and cab systems. Ask for service records and check carefully for overheating or heavy-load wear; confirm exact specifications by serial number with TractorData.com or serial-number records.

John Deere 8630 frequently asked questions

How much horsepower does a John Deere 8630 have?

It tested at 225.59 PTO horsepower and is commonly cited at 225 PTO horsepower.

What years was the John Deere 8630 produced?

John Deere produced the 8630 from 1975 through 1978.

What are the main things to inspect on a John Deere 8630?

Prioritize the engine and cooling system, articulation and driveline, transmission, hydraulics, and signs of deferred maintenance.

Specifications are commonly cited figures for general reference; exact figures vary by year and serial number, so confirm against TractorData.com and the machine's records. Values and prices of used tractors vary by condition and region. Page updated Aug 4, 2026.

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