MECHMAN | 170 AMP RACING ALTERNATOR FOR 63-85 GM – NATURAL FINISH (INCLUDES 2 PULLEYS)

The S series of 6 phase hairpin alternators offers incredible low RPM output in a compact and durable package. Highly efficient, these units use less horsepower than conventional 3 phase alternators. 12 diodes, twin rectifier plates and outstanding airflow ensure much better durability than standard Delco based alternators, even in severe conditions.
This unit comes with a 2.5″ V-Pulley installed and also includes a 2.1″ 6 rib serpentine pulley for alternate applications.
This custom designed housing directly replaces standard Delco 10DN, 10SI and 12SI alternators on most 1963 through 1985 GM vehicles. A side output stud and seamless rear cover with a side output plug allow for better clearance from the back of the alternator to the front of the engine and a smooth appearance. A single wire on the provided pigtail gets connected to any ignition switched 12V+ source to turn the alternator on and off with the ignition switch.
Simply run a properly sized positive and ground cable from the alternator to the terminals of the battery and the alternator will work perfectly, regardless of what kind of wiring harness you have. Because of their compact size and standard GM mounting ears, these alternators also work well in many aftermarket or custom bracket installations.

Name

Model

Engine

Year(s)

Amperage

BUICK

All Early Models

Most Engines

63-79

170a

BUICK

Gran Sport

All Engines

65-67

170a

BUICK

Riviera

All Engines

63-70

170a

BUICK

Skylark

All Engines

63-79

170a

BUICK

Wildcat

All Engines

63-70

170a

CADILLAC

All Early Models

All Engines

63-85

170a

CHEVROLET

All Early Models

Most Engines

63-85

170a

CHEVROLET

C10 Pickup

All Engines

63-78

170a

CHEVROLET

Camaro

All Engines

67-80

170a

CHEVROLET

Caprice

All Engines

66-77

170a

CHEVROLET

Chevelle

All Engines

64-73

170a

CHEVROLET

Chevy II

All Engines

63-68

170a

CHEVROLET

Corvette

All Engines

63-79

170a

CHEVROLET

El Camino

All Engines

64-77

170a

CHEVROLET

Impala

All Engines

63-77