question bolt pattern

[ddettloff]

I have a 67 cuda with front disc brakes car vin e7, 273 ,
I went to buy new rims and tires when measured they are 4 in bolt pattern . I thought that front disc were all 4.5 in pattern was told someone had converted this by service rep at Jegs any ideas.

 

[hemi71x]

The bolt pattern on the A body cars was 4 inch, from when Ma Mopar invented them, until 1972.
Doesn't matter wether the car is drum brake, or disc brake.
So if you have the factory, 4 piston, Kelsey Hayes disc brakes on it, then it's the small, 4 inch bolt pattern.
If the car was converted over to a single piston brake caliper system, then it's 4 1/2 inch bolt pattern.

 

[jefflock]

If you have the stock Kelsey Hayes disc brakes you should have the 4" pattern.