The 245 was the initial version of the Hemi-6 engine.
It was first used in the 1970 VG-model Valiant, and was available clear through to the final CM model of 1981.

Specifications (for 1bbl carbureted variant):
Bore x Stroke Size: 3.76 in × 3.68 in (96 mm × 93 mm)
Compression ratio: 9.5:1
Power: 123 kW (167 PS; 165 hp) at 4600 rpm
Torque: 318 N⋅m (235 lb⋅ft) at 1800 rpm
Intake valve head diameter: 1.845 in (46.9 mm)
Exhaust: 1 ¹⁄₂-inch (38.1 mm)
245LC (Low Compression) released in 1977
Bore x Stroke Size: 3.76 in × 3.68 in (96 mm × 93 mm)
Compression ratio: 7.6:1
Power: 130 hp (97 kW) estimate
Torque: 180 lb⋅ft (244 N⋅m) estimate
Intake valve head diameter 1.845-inch (46.9 mm)
Exhaust valve head diameter 1 ¹⁄₂-inch (38.1 mm)
The 245 was the initial version of the Hemi-6 engine. It was first used in the 1970 VG-model Valiant, and was available clear through to the final CM model of 1981.
Specifications (for 1bbl carbureted variant):
Bore x Stroke Size: 3.76 in × 3.68 in (96 mm × 93 mm)
Compression ratio: 9.5:1
Power: 123 kW (167 PS; 165 hp) at 4600 rpm
Torque: 318 N⋅m (235 lb⋅ft) at 1800 rpm
Intake valve head diameter: 1.845 in (46.9 mm)
Exhaust: 1 ¹⁄₂-inch (38.1 mm)
245LC (Low Compression) released in 1977
Bore x Stroke Size: 3.76 in × 3.68 in (96 mm × 93 mm)
Compression ratio: 7.6:1
Power: 130 hp (97 kW) estimate
Torque: 180 lb⋅ft (244 N⋅m) estimate
Intake valve head diameter 1.845-inch (46.9 mm)
Exhaust valve head diameter 1 ¹⁄₂-inch (38.1 mm)
Chrysler Hemi-6 Engine