J1978

Hi everyone I have a 78 delta 88.
can anyone help me out w/ the lugs size? And what’s some good options? I’m also looking for some lugs that lock as well thanks.

joe_padavano

The 1978 Delta could have come with one of two different sizes of wheel lugs. The standard suspension and brakes came with 10.75" front rotors, 9.5" x 2" rear drums, a 5 x 4/75" wheel bolt circle, and used 7/16-20 wheel studs. The optional HD suspension and brakes came with 12" front rotors, 11" x 2" rear drums, 5 x 5" wheel bolt circle, and used 1/2-20 wheel studs.

tv442

I like to use these bigger acorn lug nuts on my cars. I like the bigger size of 13/16”. Also like the vintage look. Factory nuts are small and undersized in my opinion.