Ring is GM version issued on early 70's cars with 15" x 7" wheels and also sold through GM parts up until they went to a stem hole that was then cut out from the back edge of the ring. All of the rings having the serrated outer retainer started coming up very late in 69 model year and appeared as above until the mid to late 70's when the stem hole changed to the cut away version instead of a complete hole in the ring.
The more pronounced oval shaped stem hole with the tear drop design were 69 only rings and had 4 clips on them for earlier cars. They changed up to this style of ring late in the model year and did away with the 4 clips which always broke.
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I like solid lifter cars, big cams and cars w/ 3 pedals in them. 
Last edited by NorCam; 07-26-2017 at 04:31 PM.
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