wheel dimensions for my 78 Chevy.

[Annihilator1019]

I'm looking to go with some new rims and put some 37" mudders on them soon. I'm looking at some Allied Wheel Components black RockCrusher rims but I'm not sure what the dimensions(backspacing, bolt spacing, etc) my truck has. if anyone knows then I'd really appreciate any assistance. if you could tell me how to go about measuring for these dimensions that'd be even better. much thanks.

[beastie_3]

how many lugs do you have? Take the wheel off, put it face down and measure from the lip to the back of the flange. Its easier to take a straight edge and measure it that way.