cam/lifter rockwell ?

rod · 10-26-2012, 09:12 PM

my friend just finished a 496 BBC. had a solid lifter cam. not long after break-in a lobe failure occurred. he had the cam nitrided, so it would last a long time. there is a tech college near him and he had the cam and a lifter checked for hardness. the lifter came in about 54 RC and the cam between 34 and 39.
what we do not know is 1. what is a normal figure for these two pieces, and 2. should the cam be the same hardness as the lifter.

any thoughts will be appreciated.

thanks rod in AZ

10-26-2012, 09:12 PM	#1
rod Member Join Date: Dec 2009 Location: Kingman, NW AZ. in the middle of the longest stretch of Route 66 Posts: 313 Likes: 0 Liked 20 Times in 15 Posts	cam/lifter rockwell ? my friend just finished a 496 BBC. had a solid lifter cam. not long after break-in a lobe failure occurred. he had the cam nitrided, so it would last a long time. there is a tech college near him and he had the cam and a lifter checked for hardness. the lifter came in about 54 RC and the cam between 34 and 39. what we do not know is 1. what is a normal figure for these two pieces, and 2. should the cam be the same hardness as the lifter. any thoughts will be appreciated. thanks rod in AZ