BMW 6 Series (E24)
Engines

Model
Year(s)
Engine
Power
Torque
Top Speed
628CSi
1979-1987
M30B28
135 kW (181 hp) at 5,800 rpm
235 N⋅m (173 lb⋅ft) at 4,200 rpm
215 km/h (134 mph)
630CS
1976-1979
M30B30V
136 kW (182 hp) at 5,800 rpm
255 N⋅m (188 lb⋅ft) at 3,500 rpm
210 km/h (130 mph)
630CSi*
1977-1977
M30B30
131 kW (176 hp) at 5,500 rpm
251 N⋅m (185 lb⋅ft) at 4,500 rpm
210 km/h (130 mph)
633CSi
1976-1983
M30B32
145 kW (194 hp) at 5,500 rpm
285 N⋅m (210 lb⋅ft) at 4,000 rpm
215 km/h (134 mph)
635CSi
1978-1982
M90
160 kW (215 hp) at 5,200 rpm
304 N⋅m (224 lb⋅ft) at 4,000 rpm
222 km/h (138 mph)
635CSi
1982-1989
M30B34
163 kW (219 hp) at 5,200 rpm
310 N⋅m (229 lb⋅ft) at 3,500 rpm
222 km/h (138 mph)
635CSi
1988-1989
M30B35
155 kW (208 hp) at 5,700 rpm
305 N⋅m (225 lb⋅ft) at 4,000 rpm
225 km/h (140 mph)
M635CSi
1983-1989
M88/3
210 kW (282 hp) at 6,500 rpm
340 N⋅m (251 lb⋅ft) at 4,500 rpm
255 km/h (158 mph)

Question: Which engine model does the 635CSi have?
Answer: The 635CSi has M30B35 engine.