1966 Chevelle Power Teams

These are the engine, transmission, and rear axle combinations for the 1966 Chevelle.

In 1966, General Motors offered five different engines in eight different horse-power ratings, eight different transmissions, and two different rear axles with ten different axle ratios.

The engines offered were the 194 with 120 hp, the 230 with 140 hp, the 283 with 195 hp or 220 hp, the 327 with 275 hp, and the 396 with 325 hp, 350 hp or 375 hp.

The transmissions offered were the 3 speed Saginaw with 2:85:1 or 2.54:1 ratio, the heavy duty 3 speed Warner with 2.41:1 ratio, the 3 speed Saginaw overdrive with 2:85:1 ratio, the 4 speed Saginaw with 2.54:1, the 4 speed Mucie with 2.52:1 ratio or 2.20:1 ratio, and the Powerglide.

The rear axles were offered in either a 10 bolt or 12 bolt differential using 3.07, 3.08, 3.31, 3.36, 3.55, 3.70, 3.73, 4.10, 4.56, or 4.88 axle ratios with or without positraction.

Engine Transmission Model Application Axle Ratios (1)
3.07:1 3.08:1 3.31:1 3.36:1 3.55:1 3.70:1 3.73:1 4.10:1 4.56:1 4.88:1
194 Cubic Inch L-6 Hi-Thrift 194 120 HP Standard
and
230 Cubic Inch L-6 Turbo-Thrift 230 140 HP RPO L26
3-Spd. (2.85:1 low) Sedans, Cpes & Conv.
Std.
Spcl.
With Air Conditioning
Std.
Sta. Wags. & Pickups
Std.
.
With Air Conditioning
Std.
Overdrive All Models
Std.
With Air Conditioning
Std.
Powerglide Sedans, Cpes & Conv.
Std.
With Air Conditioning
Std.
.
Sta. Wags. & Pickups
Std.
With Air Conditioning
Std.
283 Cubic Inch V-8 Turbo-Fire 283 195 HP Standard
and
283 Cubic Inch V-8 Turbo-Fire 283 220 HP RPO L77
3-Spd. (2.85:1 low) All Models exc. Pickups
Std.
Spcl.
With Air Conditioning
Std.
Pickups
Std.
With Air Conditioning
Std.
Overdrive All Models
Std.
With Air Conditioning
Std.
4-Spd. (2.54:1 low) All Models exc. Pickups
Std.
Spcl.
With Air Conditioning
Std.
Pickups
Std.
Spcl.
With Air Conditioning
Std.
Powerglide All Models
Std.
With Air Conditioning
Std.
327 Cubic Inch V-8 Turbo-Fire 327 275 HP RPO L30 3-Spd. (2:54:1 low) All Models exc. Pickups
Std.
.
With Air Conditioning
Std.
Pickups
Std.
Spcl.
4-Spd. (2.54:1 low)
Powerglide
All Models exc. Pickups
Std.
With Air Conditioning
Std.
Pickups
Std.
396 Cubic Inch V-8 Turbo-Fire 396 325 HP Standard (2) H.D. 3-Spd. (2.41:1 low)
4-Spd. (2.52:1 low)
Powerglide
Super Sport & Pickups
Std.
Spcl.
Perf.
Perf.
With Air Conditioning
Std.
396 Cubic Inch V-8 Turbo-Fire 396 360 HP L34 H.D. 3-Spd. (2.41:1 low)
4-Spd. (2.52:1 low)
Powerglide
Super Sport & Pickups
Perf.
Perf.
Std.
Spcl.
With Air Conditioning
Std.
396 Cubic Inch V-8 Turbo-Fire 396 375 HP L78 H.D. 3-Spd. (2.41:1 low)
4-Spd. (2.52:1 low)
Super Sport & Pickups
Perf.
Perf.
Std.
Spcl.
With Air Conditioning
Std.
4-Spd (2.20:1 low) Super Sport & Pickups
Spcl.
Spcl.
Spcl.

1 - Positraction axle required for 4.10:1, 4.56:1 and 4.88:1 ratio; available optionally for all other ratios.
2 - Optional on sedan pickup models (RPO L35)

Std. - Standard, Perf. - Performance, Spcl. - Special