2963
CM³
The Z7X is the 2,963 cc PRV V6 in Renault nomenclature — and the standard-bearer of the engine's third generation. From the sensible 150 bhp of the American Eagles and Dodge to the 268 bhp of the Hartge-built Safrane Biturbo, via the Alpine A610's 250 bhp turbo.
Introduced with the 2,963 cc versions of the PRV, the Z7X powered Renault's flagships — Safrane, phase 1 Laguna — but also crossed the Atlantic under the bonnets of the Eagle Premier, Eagle Medallion and Dodge Monaco.
With it comes the PRV's third generation: displacement raised to 2,963 cm³, a balance shaft, hydraulic lifters replacing the classic rocker arms — no more valve-clearance adjustment — and sodium-filled exhaust valves on the turbo versions (726 and 744), as recorded in the Workshop Manual available in our Library. All the generations are charted on the Engines page.
Its sporting summit is elsewhere: turbocharged to 250 bhp in the Alpine A610, and twin-turbocharged to 268 bhp by Hartge for the Safrane Biturbo — the full stories are in Tuners.
Hartge also built a 280 bhp Laguna Biturbo prototype on this block around 1995 — Renault declined to produce it. And remember: from 1997, the 60° L7X that replaced the PRV on these models is a different engine entirely.
The 2.5 turbo file, the 24-valve ZPJ4, and every known engine code.