G.M. LATE MODEL PERFORMANCE
SERPENTINE PULLEY SYSTEMS

THE RIGHT CHOICE IN
PERFORMANCE PULLEY
IS AS SIMPLE AS...

1. POWER & AMPS
Our pulley systems are designed to give superb performance while maintaining perfect electrical charging. Even at idle.
2. DURABLE HARD-COATED SURFACES
March Performance billet aluminum pulleys are hard-coated and reinforced in areas of high stress and wear.
3. MAINTENANCE-FREE POWDER COATINGS
Our show quality polished billet pulleys stay looking new with our exceptionally durable clear or candy powder coats.

Our Aluminum sets are Precision CNC machined from 6061-T6 billet for extra strength, long wear. and to run perfectly true. Hand polished and finished with "No Polishing" clear Powdercoat.

Performance Series Increases horsepower by reducing accessory drag. 12.5 h.p. at rear wheels typical. Eliminates belt throwing. Designed for normal street driving.

Power & Amp Series Increases horsepower by reducing accessory drag. 11 H.P. at rear wheel. Design for vehicle with high amperage needs. EXCELLENT for towing and heavy stop and go driving.

Aluminum Black Powdercoat

Billet Aluminum Clear Powder coat

1985-1987 305-350 Camaro/Firebird / Monte Carlo / GM Truck Small Block

Power and Amp Series (Recommended for Automatic Transmission Vehicles)
Set #	Material	Crank Pulley	Water Pump Pulley	Alternator Pulley	Alternator Pulley w/Cover	Optional Alternator Fan	Optional P/S Pulley	Optional Water Pump Nose Cover
4415	2 pc. steel/aluminum	5 rib, 2V blk alum. #4021	-	6 rib blk steel #110	-	-	-	-
4420	3 pc. aluminum	5 rib, 2V #4031	5 rib, 2V #4032	-	6 rib #208	221	522	314
Performance Series
4020	2 pc. steel/aluminum	5 rib, 2V blk alum. #4021	-	6 rib blk steel #120	-	-	-	-
4030	3 pc. aluminum clear	5 rib, 2V #4031	5 rib, 2V #4032	-	6 rib #208	221	522	314

1988-1992 305-350 Camaro/Firebird

Power and Amp Series (Recommended for Automatic Transmission Vehicles)
Set #	Material	Crank Pulley	Water Pump Pulley	Alternator Pulley	Alternator Pulley w/Cover	Optional Alternator Fan	Optional P/S Pulley	Optional Water Pump Nose Cover
4400	2 pc. steel/aluminum	6 rib blk alum.	-	6 rib blk steel	-	-	-	-
4405	2 pc. steel	6 rib	-	-	6 rib	-	-	-
4410	3 pc. aluminum	6 rib	Non rib	-	6 rib	221	610	330
Performance Series
4000	2 pc. steel/aluminum	6 rib blk alum.	-	6 rib blk steel	-	-	-	-
4005	2 pc. steel	6 rib	-	-	6 rib	-	-	-
4010	3 pc. aluminum	6 rib	Non rib	-	6 rib	221	610	330

1993-1997 Camaro/Firebird/Impala SS

Automatic Transmission Vehicles)
Set #	Material	Crank Pulley	Alternator Pulley
4485	Aluminum crank and blk steel alternator	6 rib	6 rib
Performance Series
4050	Aluminum	6 rib	-Power and Amp Series (Recommended for

CHEVY LS-1 S.F.I. FLUID DAMPENED PERFORMANCE PULLEY
S.F.I. Approved
Unlike some poorer designed pulleys the fluid dampened design will not cause spark sensors to retard timing with resultant loss in power. Dyno tested at 12H.P. gain. S.F.I. Approved.

Part #4521 Camaro/Firbird dampener crank pulley.

Part #4505 Camaro/Firbird dampener crank pulley and power and amp alt pulley.