I would think that even if the lifter plungers stuck all the way up that there would not have been piston/valve contact with the RAIV cam and 6X heads. I'm going with Jay S's thoughts on sticking valves.
My son Mark is running the V-Max Rhoads lifters with the Super Lube Groove with the Crower version of the RAIV cam (60919) and only 9.2:1 compression with 62 ported heads and dished pistons in the '65 2+2 and it performs nicely -- and has for 14+ years now. The Rhoads lifters are a quality product which shows up in smaller things like Crower grinding a flat on the side of the HFT lifter for their lube option while Rhoads uses a laser cut channel.
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Mick Batson
1967 original owner Tyro Blue/black top 4-speed HO GTO with all the original parts stored safely away -- 1965 Catalina Safari Wagon.
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