1971-1982 CORVETTE V-BELT

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CORVETTE SERPENTINE & V-BELT PULLEYS

Pulleys have their own unique V-spacing and must use original 1971-1982 brackets and water pump.
Increases horsepower by reducing accessory drag. 12-15 h.p. at rear wheels typical.
Eliminates belt throwing. Designed for daily street driving. Precision CNC machined to run perfectly true. 6061-T6 aluminum for extra strength and wear. Finished with a “No Polishing” clear powdercoat.

1971-1983 Corvette V-Belt

Performance Ratio's
Set #	Crank Pulley	Water Pump Pulley	Alternator Pulley w/Nose Cover	Optional P/S Pulley	Optional Water Pump Nose Cover	Optional Alternator Fan
5030	2V	2V	1V	#515 press or #523 key	321	221
5070	3V	2V	1V	Use your O.E.M.# to match or see page 50
5050	3V	3V	1V	Use your O.E.M.# to match or see page 50

Detailed Information of Set Components and Size
5030 Set Drives: Water Pump, Alternator, P.S.
Set Includes:	5031	2-Groove Crank Pulley 5 1/2”
	5072	2-Groove Water Pump 6 1/4”
	143	1-Groove Alternator Pulley 3 3/16” w/Cap

5070 Set Drives: Water Pump, P.S., A/C
Set Includes:	5051	3-Groove Crank Pulley 5 1/2”
	5072	2-Groove Water Pump 6 1/4”
	143	1-Groove Alternator Pulley 3 3/16” w/Cap

5050 Set Drives: Water Pump, P.S., A/C, Air Pump
Set Includes:	5051	3-Groove Crank Pulley 5 1/2”
	5052	3-Groove Water Pump Pulley 6 1/4 ”
	143	1-Groove Alternator Pulley 3 3/16” w/Cap

1984-1987 Corvette Serpentine

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
4435	2 pc. steel/aluminum	6 rib blk alum. #4101	-	6 rib blk steel #110	-	-
4445	3 pc. aluminum clear	6 rib	Non rib	-	6 rib #112	221
Performance Series
Set #	Material	Crank Pulley	Water Pump Pulley	Alternator Pulley	Alternator Pulley w/Cover	Optional Alternator Fan
4120	2 pc. steel/aluminum	6 rib blk alum. #4101	-	6 rib blk steel #120	-	-
4130	3 pc. aluminum clear	6 rib	Non rib	-	6 rib #208	221

1988-1991 Corvette Serpentine

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
4425	3 pc. steel/aluminum	6 rib blk alum. #4101	Non rib blk alum. #4102	6 rib blk steel #110	-	-
4430	3 pc. aluminum	6 rib #4111	Non rib #4112	-	6 rib #112	221

Matching Alternator Power Steering A/C Units Etc. - See Accessories