Drop Spindles for the 55-57 Chevrolet
Manufacture Track width Caliper Caliper Bracket Brake hose Rotors Steering arm Comments
TCI Kit Decrease 1/2" total
GM Uses stock   11" Rotors Uses stock  
Heidts
late model calipers
Unsure (phoned Heidts)
Phoned 1-800-841-8188
See note 1
78-87 Monte Carlo or
82-92 S-10
Uses bracket 15" or '79-'81 Camaro 79-81 Monte Carlo or
82-92 S-10
Uses stock with no loss of turning radius 1045 heat treated alloy steel
Recommended Master Cylinders:
Manual: 7/8" bore is recommended
Power: 1" or 1-1/16" is recommended
Heidts 11" Wilwood rotors See note 2 4 Piston Dynalite Calipers Uses bracket   11" Wilwood Uses stock 1045 heat treated alloy steel
Heidts 12.19" Wilwood rotors See note 2 4 Piston Dynalite Calipers Uses bracket   12.19" Wilwood Uses stock 1045 heat treated alloy steel
McGaughys track out approximately 1"
As measured by a CT member
78-87 Monte Carlo Built on to spindle 79-81 Camaro 79-81 GM (7/16")
82 and up (metric)
Uses stock Loss of tuning radius. Need to grind to regain turning radius.
Superior Spindle Company
11.75" and 12.19" Wilwood
Stock (phoned Superior) 4 Piston Dynalite Calipers Built on to spindle   11.75" Wilwood and
12.19" Wilwood
Built on to spindle 4140 heat treated chrome-moly
Superior Spindle Company
12.90" Wilwood
Stock (phoned Superior) 6 Piston Superlite Calipers Built on to spindle   12.90" Wilwood Built on to spindle 4140 heat treated chrome-moly
Superior Spindle Company track out approximately 1"
Info from Superior
Phone 1-800-640-3767
GM 79-81 Camaro Built on to spindle   12" GM 88-92 Performance Camaro Built on to spindle 4140 heat treated chrome-moly

Note 1: Phoned Heidts and the salesman didn't think it moved the spindles out but he wasn't sure. Some members report
the wheels remain in the stock position and some claim the wheel move out 3/8" per side.

Note 2: A member phoned Heidts and the salesman said it moved the wheels out 13/16" per side, 1 5/8" total.
The www.hotrodsusa.com site stated 1" total. Use 1 5/8" to be safe