Porsche Engine Specs

Bore, stroke, displacement and compression for 46 Porsche engines across 18 families. Free reference with rod ratio and head specs where published.

At a glance

Displacement range	96.5-275.3 ci
Cylinder counts	4, 6, 8
Years covered	1974-2026
Families	18
Engines	46

Engine families

• 901 — 1 engine
• 911 — 6 engines
• 928 — 1 engine
• 930 — 6 engines
• 944 — 1 engine
• 9A1 — 4 engines
• 9A2 — 3 engines
• 9A2 Evo — 2 engines
• 9A2EVO — 2 engines
• EA825 — 2 engines
• EA839 — 2 engines
• M48 — 1 engine
• M64 — 7 engines
• M96 — 1 engine
• M97 — 2 engines
• MA1 — 3 engines
• Mezger — 1 engine
• Type 616 — 1 engine

Every engine page lists bore, stroke, displacement, compression and rod ratio, with mean piston speed and bore/stroke character worked out, plus cylinder head specs where published. Each links into the calculators with its own dimensions filled in.

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