Spridget Specs
 
         compiled by Bob Spruck
        DIFFERENTIALS
        
  RATIO PINION RING      
3.7 11   41 8/77; 1500; GAN6-200001 on    
3.9 10 39 1275; HAN9-77591 on;GAN4-66226 on    
4.22 9 38 1275; 1098; 948    
4.55 9 41                               
            
Weight = 28 lbs
 
dimensions = 8x8x12
 

  WHEEL STUDS
        
  STOCK- 3/8-24   LENGTH KNURL DIA SHLDR  
  front 1-5/8" (1.6250) 0.408" 0.6875"  
  rear 2-3/16" (2.1875) 0.415" 0.8750"  
            
  AFTERMARKET - 7/16 X 20       
        
  BRAND NUMBER LENGTH KNURL DIA SHLDR          
WHEELTITE 28030 1-15/32" (1.4688") 0.4650" 9/32" (0.2812")
WHEELTITE 28070 2-1/8" (2.1250") 0.4800" 1/4" (0.2500")

        
  FUEL GAUGE READINGS 
        
  FULL 14 OHMS                   
HALF 90 OHMS
EMPTY 258 OHMS
   

        
  ENGINE OVERBORES 
        
  .020" 1293cc                         
.040" 1310cc
.060" 1330cc
   
        
        
        FIRE EXTINGUISHER
        
  SHOULD BE:
10 B:C SILICONIZED SODIUM BICARBONATE WITH METAL BRKT  
 
    
        
  NOT BE: ABC SILICONIZED MONO AMONIUM PHOSPHATE            
  ABC SILICONIZED POTASSIUM BICARBONATE 
 

        
  ISUZU STARTER 
        
  TROOPER/PUP 1985-89, 4 cyl       
  #16878       
 

        
  WHEELS - 4 x 4" bolt circle 
        
  NAME STYLE WIDTH OFFSET WEIGHT NOTES               
BUGEYE 12 HOLES 3 1/2" (3.5000")      
SPRIDGET,STEEL NO HOLES 3 1/2" (3.5000") 3" (3.0000") 14 lbs  
SPRIDGET, WIRE 60 SPOKE 4" (4.0000") 3" (3.0000") 12 lbs  
ROSTYLE,EARLY 8 SLOTS 4 1/2" (4.5000") 3 3/8" (3.3750") 15 lbs  
ROSTYLE,LATE 4 SPOKES 4 1/2" (4.5000") 3 3/8" (3.3750") 15 lbs  
CHEVY VEGA 12 SLOTS 5" (5.0000") 2 5/8" (2.6250") 15 lbs center hole too small, 1/2" bolt holes
CHEVY VEGA GT 4 SPOKES 6" (6.0000")   17 lbs unverified
BMW 2002 (steel) 8 SLOTS 5" (5.0000") 3 3/8" (3.7500")   100mmbolt circle, center hole too small
WESTERN (alloy) 8 SPOKES 5 1/2" (5.5000") 4 3/8" (4.3750") 13 lbs  
MINATOR (alloy) 8 SPOKES 5" (5.0000") 3 9/16" (3.5625")   Minilite replica
JENSEN HEALEY         unverified
OPEL MANTA, KADETTE         unverified
GM L-BODY         unverified
Buick Skyhawk '75-'81         unverified
Chevy Vega/Monza '71-'81         unverified
Pontiac Sunbird/Astra '76-'81         unverified
Olds Starfire '75-'81         unverified
           
 
See these GM wheels here:
           
        
        REAR AXLE SHAFTS
        
  Style Type Length Preference Casting No. Used on eng/diff  
  Steel Wheel Stock Axle 22 5/8 " (22.6250") Good BTA501 948/1098 4.22:1  1275 4.22:1  
    Stock Axle 22 5/8 " (22.6250") Better BTA806 1275 3.90:1  1500 3.70:1 
    Heavy Duty 22 5/8 " (22.6250") Best BTA940 Factory Option  
    Competition 22 1/2 " (22.50000") Racing N/A  N/A  
  Wire Wheel Stock Axle 22 1/8 " (22.1250") Good N/A All  
  Heavy Duty 22 1/8 " (22.1250") Best BTA939 Factory Option  
           
    spacer      
 

        
  REAR AXLE ASSEMBLY 
        
  TYPE DIMENSION MEASUREMENT POINTS                                              
STEEL WHEEL DIFF ASSY         
Over all width* 41 3/4" (41.3750") From inside of brake backing plate flange to inside of opposite flange
Left Hand Brake rod 14 3/4" (14.7500") From center to center of clevis pin holes
Right Hand Brake Rod 26 1/4" (26.2500") From center to center of clevis pin holes
spacer    spacer  
  WIRE WHEEL DIFF ASSY       
Over all width* 40 3/4" (40.3750") From inside of brake backing plate flange to inside of opposite flange
Left Hand Brake rod 14 " (14.0000") From center to center of clevis pin holes
Right Hand Brake Rod 26 " (26.0000") From center to center of clevis pin holes
  spacer    
  *Wire wheel assembly is 1" narrower than steel wheel assy      
*Wire wheel and steel wheel rear hubs are same except for stud length      
 
 
copyright©gerardsgarage.com