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County 764 (1974–1976) vs Zetor 7421
Specification differential, power-to-weight analysis, hydraulic benchmarks, and equipment decision guidance.
County 764 (1974–1976)
Category: Farm
Zetor 7421
Category: Farm
Decisive Performance Differentials
- County 764 (1974–1976) provides +3 PTO HP more implement shaft power
- County 764 (1974–1976) provides +1,731 lbs more unballasted traction mass
- Zetor 7421 provides +8.8 gpm higher base hydraulic flow (+95.7%)
Multi-Axis Capability Radar
Normalized 5-pillar operational benchmark comparison
Dual Field Action & Powertrain Sound
Side-by-side operational field footage verified with computer vision & acoustic audits.
Head-to-Head Specification Differential
Side-by-side technical parameters with calculated delta advantage & percent differentials
| Specification | County 764 (1974–1976) | Zetor 7421 | Advantage Delta |
|---|---|---|---|
| Power & Output | |||
Rated Engine Horsepower | 77 HP | 75 HP | - |
PTO Horsepower (Tested) | 73 HP | 70 HP | +4.3%+3 PTO HP (+4.3%) |
Traction Density Ratio | 8.5 HP/1k lbs | 10.3 HP/1k lbs | 10.3 vs 8.5 HP / 1,000 lb (higher transport agility) |
| Dimensions & Weight | |||
Base Operating Weight | 9,041 lbs | 7,310 lbs | +23.7%+1,731 lbs heavier |
| Engine Specs | |||
Displacement | 4.2 L | 4.2 L | Tie |
Cylinders | 4 Cylinders | 4 Cylinders | - |
| Hydraulics & Implements | |||
Standard Hydraulic Pump Flow | 9.2 gpm | 18 gpm | +95.7%+8.8 gpm flow |
Rear SCV Remotes (Standard) | Optional / Standard | 3 Valves | - |
3-Point Hitch Category | Category II | Category II/I | - |
| Chassis & Drivetrain | |||
Drive Configuration | 4WD | 2WD | - |
Transmission System | gear | syncromesh | - |
Buyer Decision Export Tools
Export side-by-side data for forums, Excel spreadsheets, or dealer negotiations
Operational Field Verdict Matrix
Algorithmic suitability assessment cross-referencing Nebraska draft tests against four agricultural workloads.
Primary Tillage & Deep Chisel Plowing
County delivers higher base frame ballast (+1,731 lbs) to minimize tire wheel slip under deep draft implement drag.
Large-Scale Air Seeding & Hydraulic Drills
Zetor leads with enhanced hydraulic pump capacity (18 gpm, +8.8 gpm advantage), preventing hydraulic oil overheating on wide vacuum seeders.
Road Hauling & Grain Cart Chase Duty
Zetor 7421 offers superior 10.26 HP/1,000 lb agility, reducing road fuel overhead on rapid grain bin transit cycles.
Soil Compaction & Wet Ground Flotation
Zetor 7421 features a lighter footprint (-1,731 lbs), mitigating subsoil compaction and preserving soil porosity.
Both machines demonstrate balanced engineering trade-offs in this equipment class. Base final fleet acquisition on local dealer servicing support, operator ergonomics, and implement compatibility.
Decision Analysis & Editorial Verdict
Both County 764 (1974–1976) and Zetor 7421 are remarkably well-matched within this power bracket. The decisive purchasing decision should focus on dealer proximity, local service network reputation, hydraulic circuit options, and implement hitch requirements.
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Equipment Financing & Monthly Payment Estimator
Model cash flows, estimated installment burdens, and financing differentials for agricultural leases or loans.
*Indicative estimates based on standard Tier-1 agricultural commercial rates. Taxes, freight, attachments, and insurance not included.