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1971 Camaro SS

454 cubic inch motor & 4 speed transmision

Restored 1971 Camaro
Restored 1971 Camaro 2
Restored 1971 Camaro 454
Restored 1971 Camaro 454 close up

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)

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

 

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.

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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