CHEVY BIG BLOCK SERPENTINE
CONVERSION PULLEY SETS
Standard Rotation Long Water Pump Engine

Performance Ratios
Our performance serpentine pulley sets replace your Low performance V-belts and eliminate belt throwing while retaining your standard rotation water pump. Increases horsepower by reducing accessory drag. 12-15h.p. at rear wheels typical. Precision CNC machined to run perfectly true. 6061-T6 aluminum for extra strength and wear. Finished with a “No Polishing” clear powdercoat.

Mid Performance Ratios
Uses performance crank pulley and high water flow water pump pulley.

High Water Flow Ratios
Increases cooling by speeding up water flow and fan speed. This helps at critical
low speed driving where most overheating occurs. Precision CNC machined to run perfectly true. 6061-T6 aluminum for extra strength and wear. Finished with a “No
Polishing” clear powdercoat.


shown with optional alt fan
Performance Ratios
Set #
Crank Pulley
Water Pump Pulley
Alternator Pulley With Nose Cover
Power Steering Pulley Keyway
Power Steering Pulley Press Fit
Alternator Belt Size with March Brackets
Power Steering Belt Size with March Brackets
  
7210
yes
yes
yes
-
-
42.5"
-
  
7630
yes
yes
yes
Order #616 -
Order #617
42.5"
38"
  
Mid Performance Ratios
Set #
Crank Pulley
Water Pump Pulley
Alternator Pulley With Nose Cover
Power Steering Pulley Keyway
Power Steering Pulley Press Fit
Alternator Belt Size with March Brackets
Power Steering Belt Size with March Brackets
  
7635
yes
yes
yes
-
-
42.5"
-
  
7640
yes
yes
yes
Order #616 -
Order #617
42.5"
38"
  
High Water Flow Ratios
Set #
Crank Pulley
Water Pump Pulley
Alternator Pulley With Nose Cover
Power Steering Pulley Keyway
Power Steering Pulley Press Fit
Alternator Belt Size with March Brackets
Power Steering Belt Size with March Brackets
  
7310
yes
yes
yes
-
-
44.5"
-
  
7330
yes
yes
yes
Order #623 -
Order #624
44.5"
39"
  
 

Optional: Water pump nose cover #314. Power steering pulley dimension on page 50.

 Detailed Information of Set Components and Size
7210 Set Drives: Water Pump, Alternator
Set Includes:
Part#
    
 
7211
 6-Rib Crank Pulley 5 3/4” dia.  
 
6312
 6-Rib Water Pump Pulley 6 1/4” dia.  
 
208
 6-Rib Alternator Pulley w/Cover 3 3/4” dia.  
7630 Set Drives: Water Pump, Alternator and P.S.
 
7231
 6 & 5-Rib Crank Pulley 5 3/4” dia.  
 
6312
 6-Rib Water Pump Pulley 6 1/4” dia.  
 
208
 6-Rib Alternator Pulley w/Cover 2 3/4” dia.  
7630 Set Requires: 616 or 617 matching Power Steering Pulley 
 
616
 5-Rib Power Steering Pulley w/Keyway  
 
617
 5-Rib Power Steering Pulley w/Press Fit  
7635 Set Drives: Water Pump, Alternator
 
7211
 6-Rib Crank Pulley 5 3/4” dia.  
 
6322
 6-Rib Water Pump Pulley 5 1/4” dia.  
 
208
 6-Rib Alternator Pulley w/Cover 2 3/4” dia.  
7640 Set Drives: Water Pump, Alternator and P.S.
 
7231
 6 & 5-Rib Crank Pulley 5 3/4” dia.  
 
6322
 6-Rib Water Pump Pulley 5 1/4” dia.  
 
208
 6-Rib Alternator Pulley w/Cover 2 3/4” dia.  
7640 Set Requires: 616 or 617 matching Power Steering Pulley 
 
616
 5-Rib Power Steering Pulley w/Keyway  
 
617
 5-Rib Power Steering Pulley w/Press Fit  
7310 Set Drives: Water Pump, Alternator
 
7311
 6-Rib Crank Pulley 7” dia.  
 
6322
 6-Rib Water Pump Pulley 5 1/4” dia.  
 
208
 6-Rib Alternator Pulley w/Cover 2 3/4” dia.  
7330 Set Drives: Water Pump, Alternator and P.S.
 
7331
 6-Rib Crank Pulley 7” dia.  
 
6312
 6-Rib Water Pump Pulley 5 1/4” dia.  
 
208
 6-Rib Alternator Pulley w/Cover 2 3/4” dia.  
7330 Set Requires: 623 or 624 matching Power Steering Pulley
 
623
 6-Rib Power Steering Pulley w/Keyway  
 
624
 6-Rib Power Steering Pulley w/Press Fit  
Note: If you do not have a power steering pump we recommend ordering #616 or #623 and a 1971-1974 Chevy Impala V8 keyed power steering pump #P300. See Page 52.

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

MARCH PERFORMANCE, INC. - 16160 PERFORMANCE WAY - NAPLES, FL 34110
TEL: (239) 593-4074 - FAX: (239) 593-4564 - EMAIL: info@marchperfinfo.com