CHEVY BIG BLOCK SERPENTINE DRIVE
Outward Mount Standard Rotation Short Water Pump

This system simply bolts to the front of any big block Chevy heads. This bracket kit comes complete with stainless steel tensioning rods and chrome moly rod ends for high performance operation. All necessary hardware included. Clear powdercoated to eliminate polishing in those hard to reach places. Matching serpentine pulleys are precision CNC machined from 6061-T6 aluminum. This is the same material we use for NASCAR pulleys! These pulleys will not fracture like common cast pulleys. High tensile strength means much longer wear. We go as far as hard coating the high wear areas on our pulleys! Our street rod ratio increase water flow and fan speed. This helps at critical low speed driving.Performance pulleys increase horsepower by approximately 12 h.p. depending on accessories driven.

Application:
These kits fit most mid and full size cars from the early 1950’s and newer. Kit also fits 1969 and later Camaros and Novas.
Other cars check water pump nose to radiator clearance. Water pumps with nose cover extend out 6.5” from the engine block, plus clearance for mechanical or electric fans.
Works with OEM, Hot Rod Air and Vintage Air A/C Systems

Kit Includes:
• Crank and water pump pulleys
•Alternator pulley with alternator fan and cover.
• Outward mount alternator bracket and mounting hardware.
• Tension relocation arm
• Stainless tensioning rod and rod ends
• Water pump pulley nose cover.
• Power steering kit includes bracket and pulley.
• Remote reservoir kit includes idler pulley

Optional Matching Billet Accessories:
• #400 crank pulley cover (high water flow kits only)
• #450 billet remote power steering reservoir

 


 
Performance Kits (Increases Horsepower)
Kit # Drives
Alternator
A/C
Water Pump
Saginaw Keyway P/S Pump
Saginaw Press Fit P/S Pump
Remote Reservoir P/S
Belt Size
 
20530
yes
-
yes
-
-
-
56"
 
20550
yes
-
yes
-
-
yes
59"
 
20590
yes
-
(Electric) yes
-
-
-
53.8"
 
20570*
yes
-
yes
yes
-
-
61"
 
20575*
yes
-
yes
-
yes
-
61"
 
High Water Flow Kits (Increases Cooling)
20540
yes
-
yes
-
-
-
56"
 
20560
yes
-
yes
-
-
yes
59"
 
20580*
yes
-
yes
yes
-
-
60"
 
20585*
yes
-
yes
-
yes
-
60"
 
Type of Accessories
Dayco
6 rib
 
* For use with 55-57 Chevys (side engine mounts only) and 67-69 Camaros only.

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