Toyota RZ Engine Specs

Bore, stroke, displacement and compression for all 4 Toyota RZ engines, compared side by side. Plus rod ratio and head specs where published.

At a glance

Displacement	148.8–164.4 ci
Cylinders	4
Bore	3.740"
Stroke	3.386–3.740"
Advertised power	142–150 hp
Years	1995–2004

Engines in this family

Engine	Displacement	Bore × Stroke	CR	HP
3RZ-FE	164.4 ci	3.7402" × 3.7402"	—	—
3RZ-FE	164.4 ci	3.7402" × 3.7402"	—	150
2RZ-FE	148.8 ci	3.7402" × 3.3858"	—	—
2RZ-FE	148.8 ci	3.7402" × 3.3858"	—	142

Factory cars with a RZ

• Toyota Tacoma: 1995, 142 hp; 1995, 150 hp; 1996, 142 hp; 1996, 150 hp; 1997, 142 hp; 1997, 150 hp; 1998, 142 hp; 1998, 150 hp; 1999, 142 hp; 1999, 150 hp; 2000, 142 hp; 2000, 150 hp; 2001, 142 hp; 2001, 150 hp; 2002, 142 hp; 2002, 150 hp; 2003, 142 hp; 2003, 150 hp; 2004, 142 hp; 2004, 150 hp
• Toyota 4Runner: 1996, 150 hp; 1997, 150 hp; 1998, 150 hp; 1999, 150 hp; 2000, 150 hp

What varies across the family

Every engine here shares a 3.7402" bore; displacement varies by stroke alone, which is the signature of a family built on one block with different cranks.

2 of 4 are oversquare — bore larger than stroke, which favours revs over low-end torque.

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