Toyota M Engine Specs

Bore, stroke, displacement and compression for all 6 Toyota M engines, compared side by side. Plus rod ratio and head specs where published.

At a glance

Displacement	168.4–180.3 ci
Cylinders	6
Bore	3.268"
Stroke	3.346–3.583"
Advertised power	116–232 hp
Years	1981–1992

Engines in this family

Engine	Displacement	Bore × Stroke	CR	HP
M · 3.268" × 3.583"	180.3 ci	3.2677" × 3.5827"	—	—
7M-GE	180.3 ci	3.2677" × 3.5827"	—	200
7M-GTE	180.3 ci	3.2677" × 3.5827"	—	230–232
M · 3.268" × 3.346"	168.4 ci	3.2677" × 3.3465"	—	—
5M-E	168.4 ci	3.2677" × 3.3465"	—	116
5M-GE	168.4 ci	3.2677" × 3.3465"	—	145–161

Factory cars with a M

• Toyota Supra: 1981, 116 hp; 1982, 145 hp; 1983, 150 hp; 1984, 160 hp; 1985, 161 hp; 1986, 161 hp; 1986, 200 hp; 1987, 200 hp; 1987, 230 hp; 1988, 200 hp; 1988, 230 hp; 1989, 200 hp; 1989, 232 hp; 1990, 200 hp; 1990, 232 hp; 1991, 200 hp; 1991, 232 hp; 1992, 200 hp; 1992, 232 hp

What varies across the family

Every engine here shares a 3.2677" bore; displacement varies by stroke alone, which is the signature of a family built on one block with different cranks.

3 of 6 are undersquare — stroke larger than bore, favouring torque low in the range.

Each engine page carries rod ratio, mean piston speed, bore/stroke character and cylinder head specs where published, and links into the calculators with its dimensions already filled in.

← All Toyota engines