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	170a
CHEVROLET	Malibu	All Engines	64-77	170a
CHEVROLET	Monte Carlo	All Engines	70-77	170a
GMC	All Early Models	All Engines	63-85	170a
GMC	C15 Pickup	All Engines	67-78	170a
OLDSMOBILE	All Early Models	V-8	63-85	170a
OLDSMOBILE	442	All Engines	65-71	170a
OLDSMOBILE	Cutlass	All Engines	63-76	170a
OLDSMOBILE	F85	All Engines	63-72	170a
PONTIAC	Early models	V-8	63-85	170a
PONTIAC	Firebird	All Engines	67-70	170a
PONTIAC	GTO	All Engines	64-71	170a
PONTIAC	Tempest	All Engines	63-70	170a
PONTIAC	Ventura	All Engines	71-77	170a

170 amp racing alternator - 63-