1964 Malibu SS
Rear End Gear Ratio/Codes
All 1964 Chevelles were equipped with a 10-bolt rear end. Several 6- and 8-cylinder engines were available along with several manual and automatic transmissions. Several ratios were available. Casting number to look for is #3839390.
| Prefix | Axle Ratio |
| LA | 3.08:1 ~ 3 or 4-speed |
| LB | 3.36:1 ~ 3 or 4-speed |
| LG | 3.08:1 ~ Positraction |
| LH | 3.36:1 ~ Positraction |
| YA | 3.08:1 ~ 3 or 4-speed |
| YB | 3.36:1 ~ 3 or 4-speed |
| YG | 3.08:1 ~ Positraction |
| YH | 3.36:1 ~ Positraction |
| ZA | 3.08:1 ~ found with Powerglide transmission |
| ZB | 3.36:1 ~ |
| ZC | 3.08:1 ~ w/Metallic Brakes |
| ZD | 3.36:1 ~ w/Metallic Brakes |
| ZE | 3.08:1 ~ Positraction w/Metallic Brakes |
| ZF | 3.36:1 ~ Positraction w/Metallic Brakes |
| ZG | 3.08:1 ~ Positraction |
| ZH | 3.36:1 ~ Positraction |
| ZJ | 3.70:1 ~ w/Overdrive |
| ZK | 3.70:1 ~ Positraction |
| ZL | 3.70:1 ~ w/Metallic Brakes |
| ZM | 3.70:1 ~ Positraction w/Metallic Brakes |
Two 6-cylinder engines were offered; the base 194 cubic inch engine with 120 hp and the optional 230 cubic inch engine with 155 hp. Four 8-cylinder engines were offered; the base 283 cubic inch V8 with 195-hp and an optional 283 cubic inch V8 with a 4-barrel carburetor rated at 220-hp . Two 327 cubic inch V8s were offered late in the year (March and June respectively), one rated at 250-hp and one rated at 300-hp .
See the engines page for engine/transmission breakdown.
Transmission
Transmission choices were fairly limited for 1964. Three manual 3-speed transmissions were used, one for the two 6-cylidner engines and one for the V8 engines plus an overdrive 3-speed optional with the two 6-cylinder engines and the two 283 V8 engines. Although only one automatic transmission type was offered as an option, the Powerglide™, three versions were used. One for the two 6-cylinder engines, one for the two 283 V8 engines, and a third for the two 327 V8 engines.
Power Teams
