Just thinking outside the box today


I would think so too. Taking examples from newer technology magnum heads and LS type head’s running 5/16 (8 mm) sized valves.
And the LS folks are going to 7mm stem stuff on the really hot stuff, the guy I'm doing the MGB unit on was a little nervous about the idea at 1st, lol!! I told him, uhh if a 2nd Gen Hemi can crank 8K on 5/16 stems w/a 2.30" head hangin on the end, poppin' at the will of a solid roller,......your little MG will be fine.