Rear 10"x1 3/4" Rear 5 0n 4" Drum

[DartGTDan]

Seems there is a lot of discussion about new rear drums for the small bolt pattern (5 on 4" bolt circle) cars. I purchased a set from www.rockauto.com with a Wagner #BD60123.
Attached is a drawing I created to show the differences in the 5 on 4" vs. the 5 on 4 1/2" bolt circles. Also shown are some pictures of the drums I purchased from rockauto.

 

[Kernel Sanders]

I've always made quick measurement of bolt/hole patterns as measured as shown attached... take a close look at how 5 lug are measured.
Makes it quick and easy when out pickin at the bone yard or verifying bolt pattern when buying used rims. yes I have been burned & attempted burns before because of sellers 'guessing' bolt patterns.