Cadillac V8 engine
500

Cadillac V8 engine

Section Title: 500
Table Section Text: None

Year	Engine VIN code	Engine letter code	Displacement	Rated horsepower	Rated torque	Bore x stroke	Compression ratio	Oil pressure

1968–1969	None	None	472 cu in (7.7 L)	375 hp (280 kW) @ 4400 rpm	525 lb⋅ft (712 N⋅m) @ 3000 rpm	4.3 in × 4.06 in (109.2 mm × 103.1 mm)	10.5:1	33 psi (2.3 bar)

1970	10.0:1	35–40 psi (2.4–2.8 bar)

500 cu in (8.2 L)	400 hp (298 kW) @ 4400 rpm	550 lb⋅ft (746 N⋅m) @ 3000 rpm	4.3 in × 4.304 in (109.2 mm × 109.3 mm)

1971	R	61E,Q	472 cu in (7.7 L)	345 hp (257 kW) @ 4400 rpm	500 lb⋅ft (678 N⋅m) @ 2800 rpm	4.3 in × 4.06 in (109.2 mm × 103.1 mm)	8.5:1

S	500 cu in (8.2 L)	365 hp (272 kW) @ 4400 rpm	535 lb⋅ft (725 N⋅m) @ 2800 rpm	4.3 in × 4.304 in (109.2 mm × 109.3 mm)

1972	R	62E,Q	472 cu in (7.7 L)	220 hp (164 kW) @ 4400 rpm	365 lb⋅ft (495 N⋅m) @ 2400 rpm	4.3 in × 4.06 in (109.2 mm × 103.1 mm)	35 psi (2.4 bar)

S	500 cu in (8.2 L)	235 hp (175 kW) @ 4400 rpm	385 lb⋅ft (522 N⋅m) @ 2400 rpm	4.3 in × 4.304 in (109.2 mm × 109.3 mm)

1973	R	63E,Q	472 cu in (7.7 L)	220 hp (164 kW) @ 4400 rpm	365 lb⋅ft (495 N⋅m) @ 2400 rpm	4.3 in × 4.06 in (109.2 mm × 103.1 mm)

S	500 cu in (8.2 L)	235 hp (175 kW) @ 4400 rpm	385 lb⋅ft (522 N⋅m) @ 2400 rpm	4.3 in × 4.304 in (109.2 mm × 109.3 mm)

1974	R	64E,Q	472 cu in (7.7 L)	205 hp (153 kW) @ 4400 rpm	380 lb⋅ft (515 N⋅m) @ 2400 rpm	4.3 in × 4.06 in (109.2 mm × 103.1 mm)

S	500 cu in (8.2 L)	210 hp (157 kW) @ 3600 rpm	380 lb⋅ft (515 N⋅m) @ 2000 rpm	4.3 in × 4.304 in (109.2 mm × 109.3 mm)

1975	65E,Q

1976	66E,Q	190 hp (142 kW) @ 3600 rpm	360 lb⋅ft (488 N⋅m) @ 2000 rpm

Sentence(s)

In 1971, Cadillac V8 engine compression was reduced from 10.0:1 to 8.5:1, the lowered compression ratio dropped the 500's gross output from (298 kW) to (272 kW) or 235 hp (175 kW).

final_sentence: In 1971, Cadillac V8 engine compression was reduced from 10.0:1 to 8.5:1, the lowered compression ratio dropped the 500's gross output from (298 kW) to (272 kW) or 235 hp (175 kW).