- Single guide plate flat, 1-piece, non-adjustable
- For 5/16" diameter pushrods and 7/16" Rocker Studs
- Fits AMC 290-to-401 c.i.d. and Pontiac 350-to-455 c.i.d. V8 using stereo lithography Techniques for an accurate fit
- Feature exact Stud placement and rounded contact points
- Necessary for high lift/spring pressure environments of performance engines
- Hardened and black oxide finished
