The Ford T7CQ is a 2,994 cc, inline‑six petrol engine produced between 1973 and 1979. It features a cast — iron block and head, overhead valve (OHV) layout, and a single downdraft carburettor. In standard form it delivered 110 bhp (82 kW) at 4,200 rpm with 220 Nm of torque, offering dependable performance for executive saloons and light commercial applications.
Fitted to models such as the Ford Granada Mk I and early Mk II variants, the T7CQ was engineered for durability and ea…
The T7CQ predates mandatory EU emissions standards. Production years 1973–1979 fall under pre-regulatory or early voluntary compliance frameworks (VCA historical vehicle classification applies).
The Ford T7CQ is a 2,994 cc inline‑six petrol engine engineered for executive saloons and fleet vehicles (1973–1979). It combines an OHV valvetrain with a single carburettor to deliver smooth torque and mechanical simplicity. Designed during the transition to early emissions controls, it incorporates basic air injection while prioritizing serviceability.
| Parameter | Value | Source |
|---|---|---|
Displacement | 2,994 cc | |
Fuel type | Petrol (Leaded or Unleaded, min. 87 RON) | |
Configuration | Inline‑6, OHV, 12‑valve | |
Aspiration | Naturally aspirated | |
Bore × stroke | 81.0 mm × 96.5 mm | |
Power output | 110 bhp (82 kW) @ 4,200 rpm | |
Torque | 220 Nm @ 2,400 rpm | |
Fuel system | Single downdraft carburettor (Zenith/Stromberg) with air injection | |
Emissions standard | Voluntary UK/EU pre-regulatory (no formal Euro standard) | |
Compression ratio | 8.0:1 | |
Cooling system | Water‑cooled, belt-driven pump | |
Turbocharger | None | |
Timing system | Chain-driven camshaft with distributor drive gear | |
Oil type | SAE 20W-50 mineral oil (detergent) | |
Dry weight | 205 kg |
The Ford T7CQ was used across Ford's Granada platform with longitudinal mounting and no external licensing. This engine received minor platform-specific adaptations—heavier-duty mounts in police-spec Granada Mk I and revised carburettor jets in Granada Mk II for improved emissions—creating slight interchange limits. All adaptations are documented in OEM technical bulletins.
The T7CQ's primary reliability risk is distributor drive gear wear in early castings, with elevated incidence in high-mileage or fleet vehicles. Ford internal reports from 1976 noted ignition timing instability in engines beyond 80,000 miles, while UK DVSA historic vehicle inspections occasionally flag misfire-related emissions failures. Infrequent oil changes and incorrect viscosity accelerate wear, making proper lubrication critical.
Analysis derived from Ford technical bulletins (1973–1979) and UK DVSA historic vehicle inspection data (2010–2023). Repair procedures should follow manufacturer guidelines.
The most common questions about engine codes, what they mean, how to find them and how this database works
The T7CQ is mechanically simple and robust when properly maintained. The main concern is distributor drive gear wear in early (pre-1977) units, which can cause ignition failure. Later models feature a steel gear that resolves this. With regular oil changes, correct fuel, and carburettor maintenance, the engine can deliver decades of service. Many Granadas still operate on original T7CQ engines.
Top issues include distributor drive gear wear (early models), carburettor degradation from ethanol fuels, timing chain stretch, and rear main seal leaks. These are documented in Ford service bulletins and historic vehicle forums. Maintaining correct oil viscosity and change intervals is essential to prevent drive gear failure.
The T7CQ powered the Ford Granada Mk I (1973–1977) and Granada Mk II (1977–1979) across saloon, estate, and upmarket GL/Ghia trims. It was the primary 3.0L petrol option before Ford transitioned to the Essex V6 in later Granada models.
Yes. Common upgrades include dual SU carburettors (+15–20 bhp), higher-compression heads (9.0:1), and performance camshafts. The bottom end is strong enough for 130+ bhp. Avoid excessive tuning without ensuring distributor drive integrity and head upgrades. Period-correct tuning is popular in classic touring events.
In a Granada Mk I saloon, expect 19–23 mpg (UK); in heavier Mk II Ghia models, 17–21 mpg (UK). This equates to ~12.0–10.5 L/100km. Economy depends heavily on condition, gearing, and driving style. Modern unleaded fuel is acceptable but avoid ethanol blends above E5.
No. The T7CQ is a non-interference OHV design. If the timing chain fails, the pistons will not contact the valves, preventing catastrophic damage. However, the engine will stop running and require timing re-synchronization.
Detergent SAE 20W-50 mineral oil as specified in Ford Lubrication Bulletin T7CQ-75-LUB. Modern classic oils with ZDDP additive are recommended for flat-tappet cam protection. Change every 3,000–4,000 miles or annually to prevent sludge and gear wear.
Comprehensive technical documentation and regulatory references
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DVLA: Engine Changes & MoT
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Regulation (EC) No 715/2007
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