(aka z22se)
The L61 is a 2.2 L—2,198 cc —version with a lost-foam cast aluminum cylinder head and block;
it features an 86 millimetres (3.4 in) bore
and 94.6 millimetres (3.72 in) stroke [1]
and either a 9.5:1 compression ratio or a 10.0:1.
The engine is 665 millimetres (26.2 in) in length, 642 millimetres (25.3 in)in width, 655 millimetres (25.8 in) in height and approximately 139 kilograms (310 lb).[1]
(aka z20net)
LK9 is a turbocharged2.0 L— 1,998 cc (121.9 cu in)—version of the L850 (86 mm bore) series ECOTEC utilizing a reinforced sand cast aluminum cylinder head and reinforced internal components.
It features an 86 millimetres (3.4 in) bore and stroke
and a 9.5:1 compression ratio. Power is 210 horsepower (160 kW) at 5300 rpm and 221 lb·ft (300 N·m) of torque at 2500 rpm. Maximum boost is 12.3 psi (0.85 bar)
(aka usa ver of the z20 but supercharged)
The LSJ is a supercharged version of the LK9 Ecotec 2.0 L— 1,998 cc (121.9 cu in)— with an Eaton M62 Roots-type superchargerand air-to-liquid intercooler. It is rated at 205 hp (153 kW) at 5600 rpm and 200 lb·ft (271 N·m) at 4400 rpm
with a compression ratio of 9.5:1 and a 6500 rpm redline.