Engine Statistics

Engine (cyls-size)	Years	Carburetor (bbls)	HP@RPM1	Torque@RPM1 (ft lbs)	Bore & Stroke (in)	Compression Ratio
4-153 ci	'62-'70	1	90@4000	152@2400	3.875 x 3.25	8.5:1
2.5L
6-194 ci	'62-'67	1	120@4400	177@2400	3.563@3.25	8.5:1
3.2L
6-230 ci	'65	1	140@4400	215@2000	3.875x3.25	8.5:1
3.8L	'66-'67	1	140@4400	220@1600	3.875x3.25	8.5:1
	'68	1	145@4400	220@1600	3.875x3.25	8.5:1
	'69-'70	1	140@4400	220@1600	3.875x3.25	8.5:1
6-250 ci	'67-'70	1	155@4200	235@1600	3.875x3.53	8.5:1
4.1L	'71	1	145@4200	230@1600	3.875x3.53	8.5:1
	'72	1	110@4200	185@1600	3.875x3.53	8.5:1
	'73-'74	1	100@4200	175@1600	3.875x3.53	8.25:1
	'75-'78	1	105@3800	185@1600	3.875x3.53	8.5:1
	'79	1	115@3800	190@1300	3.875x3.53	8.0:12
8-262 ci	'753	2	110@3600	200@2000	3.671x3.10	8.5:1
4.3L
8-283 ci	'64-'67	2	195@4800	285@2800	3.875x3.00	9.25:1
4.6L	'66	4	220@4800	295@3200	3.875x3.00	9.25:1
8-305 ci	'76-'77	2	140@3800	245@2000	3.736x3.48	8.5:1
5.0L	'78	2	140@3800	245@2000	3.736x3.48	8.0:1
	'79	2	130@3200	230@2000	3.736x3.48	8.4:1
8-307 ci	'68-'70	2	200@4600	300@2400	3.875x3.25	9.0:1
5.0L	'71	2	200@4600	300@2400	3.875x3.25	8.5:1
	'72	2	130@4000	230@2400	3.875x3.25	8.5:1
	'73	2	115@4000	205@2000	3.875x3.25	8.5:1
8-327 ci	'65	4	250@4400	350@2800	4.000x3.25	10.5:1
5.4L	'65	4	300@5000	360@3200	4.000x3.25	10.5:1
	'65	4	350@6000	360@3200	4.000x3.25	11.0:1
	'66	4	275@4800	335@2800	4.001x3.25	10.5:1
	'66	4	350@5800	360@3200	4.001x3.25	11.0:1
	'67-'68	2	210@4600	320@2400	4.001x3.25	8.75:1
	'67-'68	4	275@4800	355@3200	4.001x3.25	10.0:1
8-350 ci	'68	?	295	?	?	?
5.7L	'69-'70	2	250@4800	345@2800	4.000x3.48	9.0:1
	'69-'70	4	300@4800	380@3200	4.000x3.48	10.25:1
	'71	2	245@4800	350@2800	4.000x3.48	8.5:1
	'71	4	270@4800	360@3200	4.000x3.48	8.5:1
	'71	4	330@4800	275@2800	4.000x3.48	9.0:1
	'72	2	165@4000	280@2400	4.000x3.48	8.5:1
	'72	4	200@4400	300@2800	4.000x3.48	8.5:1
	'72	4	255@5600	280@4000	4.000x3.48	9.0:1
	'73	2	145@4000	255@2400	4.000x3.48	8.5:1
	'73	4	175@4400	270@2400	4.000x3.48	8.5:1
	'743	2	145@3600	250@2200	4.000x3.48	8.5:1
	'74	4	160@3800	245@2400	4.000x3.48	8.5:1
	'74	4	185@4000	270@2600	4.000x3.48	8.5:1
	'753	2	145@3800	250@2200	4.000x3.48	8.5:1
	'75	4	155@3800	250@2800	4.000x3.48	8.5:1
	'76-'77	4	165@3800	260@2800	4.000x3.48	8.5:1
	'78	4	165@3800	260@2800	4.000x3.48	8.0:1
	'79	4	165@3800	260@2800	4.000x3.48	8.2:1
8-3966	'68-'694	4	325@4800	410@3200	4.094x3.76	10.25:1
6.5L	'68-'70	4	350@5200	415@3400	4.094x3.76	10.25:1
	'68-'70	4	375@5600	415@3600	4.094x3.76	11.0:1
8-427	'695	4	500+	?	?	?
7.0L

¹Starting in 1972, horsepower and torque figures are SAE net. This means that they are measured at the wheels. Net HP rating is more realistic since two cars can have two different SAE net ratings but still have the same gross HP rating.
²8.2:1 in eco-pinko land (i.e., California).
³Not available in eco-pinko land (i.e., California).
⁴I've heard that the 325HP flavor of this engine was never installed in Novas.
⁵This engine was only available in Yenko or Phase III dealer-modified Novas. No GM factory every installed these engines. ⁶In 1970 this engine was bored out to 4.125 and was technically a 402, not a 396. It retained the same published specifications.

Copyright © 1997 Aren Cambre.