I remember reading somewhere, and I believe it is in the PIM/Assembly Manual that cars that have the SSII & III wheels have the drums painted black across the outward surface areas. I believe these are the original KH drums, but I cant find any info anywhere as to what the markings should be. I replicated what I imagine they should look like with the black applied haphazardly over the cast blast I painted the rest of the drum with after blasting and turning. Anyone who has ever seen an original drum off a car equipped with Rally wheels - does this look right?

 

yes, I have several untouched drums. honestly, I would say that's too neat. or over restored. but regardless, it's acceptable. It was just sloppily done on the line, so as long as when you look through the wheel openings and you see black, you are good

 

Thank you - I will try to "slop it up" a little more. Would you please look at the OE drums you have and let me know what casting or part numbers are on them? Thanks in advance - this W-30 I'm doing is originally from Des Plaines IL.

 

I'm interested in this information, too.

I once read that the original drums were smooth, not finned on the outside. Anyone know if this is true? Costpenn and I are both talking about 1970 here.

 

Drums are to be the bell shaped drums.
The finned are replacement.

 

Was 70 the last year the bell shaped drums were used from the factory on Cutlass/442's?

Don W

 

Yes, 70 was the last year.

 

Are the bell shaped drums 2" or 2.5", or both? I have some on a 67 442. Are they also correct for a 67? More desirable?

 

Like these...

Brett

 

Here is the set I done on my W-30. The very few I seen with original paint on them were not taped off. Just shot black on the outside surface with overspray on the edges.

 

I was hoping these might be original, because in the little there is on this subject on the get, Chevelle guys say you can have either the bell shaped or finned on Chevrolet As body in 1970. These drums are really old I believe and have a P/N of KH-74439 on each. Guess I will have to put bell drums on my wish list of goodies.

I hope the rotors I finished up tonight are correct - they have that groove in them and I know 1 or 2 pc. rotors were OE in '70

 

Your rotors look great. I was in the reverse situation. I had the correct rears but my fronts were wore out and had to replace them. I chucked my replacement rotors in a lathe and turned grooves in them to make them look correct.

 

That makes the most sense. I've attached the factory specs for painting the drums.

 

I didn't tape mine off. I just shot the paint straight on to the outward surface without "curling" around the sides. Though you can't see it in the pics, there is some black on the raised surface of the ribs and a little at the base where overspray front painting it head on would have landed,

Kurt, looks like by your last PIM page, I did mine correctly!

 

wow, they looked taped off to me.

as previously stated, it would be bell or mushroom style drums as these are the ones I have ... in a big stack of like 22 or so (amazing how they "reproduced" over the years).


as for the width someone asked about, same as all drums. 2.5" front, 2" rear. and I believe a vista would be 2.5" in the rear. I've seen fronts two different ways. drum and hub as one piece or the hub with wheel bearings as one piece and the drum slides off like the rear drums.