lug patterns

[jeffbiologist]

67 fury n 74 valiant have same wheel?? 5 on 4.5??

 

[Big_John]

I think 1974 is when they went to the 4 1/2" bolt circle in the A body.

The only true way to tell is to measure or fit it.

 

[jeffbiologist]

how do i measure....from what to what...sorry for bein dumb

 

[greasemonkeyman]

Measure center to center from the studs across from each other.You should get 4.5 inches most likely

 

[jeffbiologist]

this?

how do i measure....from what to what...sorry for bein dumb

 

[greasemonkeyman]

You got it! Is that the rim off the dart?

 

[Big_John]

If you numbered the lug holes 1-5, measure the center of hole 1 to the center of hole 3.

Multiply your measurement by 1.05 and you will have the bolt circle. You should get almost 4 5/16" for a 4 1/2" bolt circle.

 

[greasemonkeyman]

They actually sell a round disc that gets place right over your lug nut pattern and will show you exactly what you have

 

[Catfish]

I think 1974 is when they went to the 4 1/2" bolt circle in the A body.

The only true way to tell is to measure or fit it.

My 74 dart is/was actually 4 on 5. The disc brake cars however are 4 1/2 on 5. (Speaking about the A body)

 

[Big_John]

My 74 dart is/was actually 4 on 5. The disc brake cars however are 4 1/2 on 5. (Speaking about the A body)

I knew there was some version that had 5 on 4 1/2" BC. Didn't all the V8 cars have disc brakes?

 

[patrick66]

1974 is a weird, bastard year for A-bodies. Drum-brake cars are 4", while disc-brake cars are 4-1/2". I've owned two '73 disc-brake A-bodies WITH 4-1/2" BP (both 340 Sports), but I've had A-body nuts call me a liar and all kinds of other BS...never mind I've owned over two dozen A-bodies, all back when people were not messing with suspension swaps on these.

I'm still convinced that the 1973MY was the first year for the 4-1/2" BP on the A-body disc brake cars.

 

[greasemonkeyman]

I'm still convinced that the 1973MY was the first year for the 4-1/2" BP on the A-body disc brake cars.[/QUOTE]

It might be that 1973 was a mid year swap to the new 4-1/2" bolt pattern on the A bodies.Lots of cars back then went to a wider bolt pattern for V8 engine,like the Mustangs that came with four lugs for the six and five lugs for the V8.