1971 Camaro

1971 Camaro Engine & Drivetrain Info

	CID	Config	Bore & Stroke	Gross HP @ RPM	Net HP @ RPM	Gross Torque @ rpm	Net Torque @ rpm	Comp	Carb.
Base	250	L-6	3.875 x 3.53	145 @ 4200	110 @ 3800	230 @ 1600	185 @ 1600	8.5:1	1V
Base	307	V-8	3.875 x 3.25	200 @ 4600	140 @ 4400	300 @ 2400	235 @ 2400	8.5:1	2V
L-65	350	V-8	4.00 x 3.48	245 @ 4800	165 @ 4000	350 @ 2800	280 @ 2400	8.5:1	2V
L-48	350	V-8	4.00 x 3.48	270 @ 4800	210 @ 4400	360 @ 3200	300 @ 2800	8.5:1	4V
Z-28	350	V-8	4.00 x 3.48	330 @ 5600	275 @ 5600	360 @ 4000	300 @ 4000	9.0:1	4V
LS-3	396	V-8	4.126 x 3.76	300 @ 4800	260 @ 4400	400 @ 3200	345 @ 3200	8.5:1	4V

Notes: 1971 was the year GM lowered compression ratios and began to record horsepower and torque in terms of “net” instead of “gross”. The LS-3 “396” V-8 actually displaced 402 cid.

Engine Suffix Codes

CAA: 250ci, mt	CGK: 350ci, mt, 270hp/SS	CJG: 350ci, mt, 270hp/SS
CAB: 250ci, pg	CGL: 350ci, at, 270hp/SS	CLA (CLC): 396ci, hp, mt, 300hp/SS
CCA: 307ci, mt	CGP: 350ci, mt, z	CLB (CLD): 396ci, at, hp, 300hp/SS
CCC: 307ci, at, pg	CGR: 350ci, at, z	CGB: 350ci, pg
CJD: 350ci, at, 270hp/SS

Abbreviations: at = Turbo Hydramatic automatic, ci = cubic inch, hp = high performance, pg = Powerglide automatic transmission, mt = manual transmission, sp = special high performance, z = RPO Z28 special performance package. SS = super sport, (CLC/CLD engine code usage is unverified)

Engine Code Example: V0328CGP – (350 330hp Assembled in Flint assembly plant on March 28)

Only manual transmission available with base 250 and 307 was the 3-speed.
Only manual transmission for larger V-8’s were 4-speeds.
a = Turbo Hydra-Matic with 2.52:1 low also available with 307 V-8.
S = Standard ratio, E = Economy, P = Performance.

Transmission Codes

Type	Plant	Code
3-Speed	Muncie L.D.	S
4-Speed (cast iron case)	Muncie L.D.	R
4-Speed (Aluminum case)	Muncie H.D.	P
Powerglide	Cleveland	C
Powerglide	McKinnon	E
Turbo Hydramatic 350	Cleveland	B
Turbo Hydramatic 350	Toledo	Y
Turbo Hydramatic 350	GM Canada	J

Transmission Code Example: P1C27C – (1971 Muncie 4 speed, assembled March 27, M22 w/2.20 1st gear)
TH400 transmission code is CY and is stamped on a tag which is rivited to transmission case.

1971 Camaro Powerteams

		Base	Base	L-65	L48	Z-28	LS-3
		250	307	350	350	350	396
3- and 4-spd.	1	2.85:1	2.85:1	2.54:1	2.52:1	2,52:1	2.20:1
manual	2	1.68:1	1.68:1	1.80:1	1.88:1	1.88:1	1.64:1
transmission	3	1.00:1	1.00:1	1.44:1	1.46:1	1.46:1	1.27:1
ratios	4	—	—	1.00.1	1.00:1	1.00:1	1.00:1
	R	2.95:1	2.95:1	2.54:1	2.59:1	2.59:1	2.26:1

Clutch diam., in.		9.12	10.34	10.34	11.0	11.0	11.0

Axle ratios	S	3.08:1	3.08:1	3.08:1	3.42:1	3.73:1	3.42:1
	E
	P					4.10:1	—

		Base	Base	L-65	L48	Z-28	LS-3
		250	307	350	350	350	396
Powerglide &	1	1,82:1	1.82:1a	2.52:1	2.52:1	2.48:1	2.48:1
Turbo Hydra-	2	1.00:1	1.00:1	1.52:1	1.52:1	1.48:1	1.48:1
matic ratios	3	—	—	1.00:1	1.00:1	1.00:1	1.00:1
	R	1.82:1	1.82:1	1.93:1	1.93:1	2.08:1	2.08:1

Axle ratios	S	3.08:1	3.08:1	2.73:1	3.08:1	3.73:1	3.42:1
	E
	P			3.42:1	—	4.10:1

Rear Axle Codes

CA	2.73:1 Locking	CK	3.42:1
CB	4.10:1	GX	3.08:1
CG	3.73:1	GY	3.08:1 Locking
CJ	3.42:1 Locking	GZ	2.73:1

Rearend Code Example: CJG100DE – (Chevy sourced 3.42 Posi, Assembled on day shift of 100th day of the year w/ Eaton Posi)

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