The legendary Isky 404A Flathead cam

[ken-r-mer]

Saw it in a HotRod feature article. The cam lobes were modified so the lifters were able to be non-rotating and the bottoms slightly curved. Apparently they were able to get the revs up to 7,000. But the cam and lifter life were short lived due to excessive wear. They set a record for a Salt Flats speed at 250 mph for a standard carb vehicle.
But...I was thinking...that was BEFORE the advent of solid rolling lifters. I wonder if anybody ever looked into 1) providing smooth steel sleeves to slip into the block cast lifter sleeves (less sliding resistance) and 2) come up with the duo solid roller lifter setup as seen on today's overhead valve builds, but, for the flathead using that same Isky 404A cam? Solid roller lifters in a flathead. Freeing up friction resistance in the valve train assembly for revs up to 7,000 rpm sounds so...intriguing.