In general, adapters usually change bolt pattern diameter but don't have to. An adapter always has 2 sets of studs - one to bolt adapter to axle and one for the wheel. Adapters are generally considered much weaker than a properly made spacer with correct studs. I would never run an adapter on anything other than a very mild stock vehicle.


67 Coronet 500 9.610 @ 139.20 mph
67 Coronet 500 (street car) 14.82 @ 94 mph
69 GTX (clone) - build in progress......