Aluminum brake drums for GM vehicles

Jim Kaekel · 10-09-2017, 10:51 AM

I would be very careful running aluminum brake drums. I put a set on my car probably 15 years ago. I close friend that worked in a muffler shop told me they were noted for cracking on daily drivers and told me to keep a close eye on them. I pulled them off after attending a couple of races and both drums had cracks in the inner iron sleeve. You have an iron inner sleeve and aluminum outer, two metals with very different rates of expansion. I know of a fellow racer here in Div. 3 that had one shatter and put his car in the sand trap.

10-09-2017, 10:51 AM	#5
Jim Kaekel VIP Member Join Date: Jul 2002 Location: Michigan Posts: 1,229 Likes: 133 Liked 535 Times in 110 Posts	Re: Aluminum brake drums for GM vehicles I would be very careful running aluminum brake drums. I put a set on my car probably 15 years ago. I close friend that worked in a muffler shop told me they were noted for cracking on daily drivers and told me to keep a close eye on them. I pulled them off after attending a couple of races and both drums had cracks in the inner iron sleeve. You have an iron inner sleeve and aluminum outer, two metals with very different rates of expansion. I know of a fellow racer here in Div. 3 that had one shatter and put his car in the sand trap. __________________ Jim Kaekel 3836 STK