Post by 406vette on Jun 2, 2015 7:49:30 GMT -5
Just thought I would put this info back out on this site since the old site went down.
1966-69 Corvair or 1967-69 Camaro front hubs- 5x3/4 bolt pattern.
Timken wheel bearings-
Inner- Set 30
Outer- Set 2
Wheels Seals- 710224
Rotors- 2001 Pontiac Grand Am
Caliper, brackets and pads- 2001 Pontiac Grand Am
2 inch pc of 4130 DOM tubing- .7500 od with a .035 wall thickness. Got mine at OnlineMetals.Com
1. Machining bearing spacers from tubing: .600 long spacer O.D needs to be turned down to .7505. This will give you a press fit into the Set 2 outer wheel bearing. Then you will need to hone to I.D. to .6875. This will give you a slip fit on the spindle like the original bearing.
2. Machining hubs:
The hubs will need to be machined as follows. The seal surface I.D. need to be enlarged to 2.441. This will allow the seal I spec to fit the hub and the spindle without any spacers required. Next the O.D. of the wheel mounting flange needs to be turned down to 5.680. This will allow any rotor to slide over the flange. Last the outer bearing stop needs to be set .125 deeper. This will keep the bearing spacing the same as the Chevette’s.
3. Chamfer inner bearing:
The inner wheel bearing, Set 30, will need to have a radius added to the side that rests against the back of the spindle. My bearing didn’t have proper clearance to clear the radius on the spindle.
4. Remove dust shield and file down raised area on spindle so the bracket will sit flush on the mounting tabs. These are the dimensions for the bracket too. The bracket will need to be shaped so it clears the piston area of the caliper.
5. Install rotor:
The Grand Am rotor 11” dia. And has a 5X115mm bolt pattern. This is close enough to the 5X4 3/4 that it will just slip right on with no modifications. The factory brake hoses are also still used, but you need the banjo bolt for the Grand am calipers.
Old vs. New!