Camshaft And Valve Timing Event Articles

lead69 said

According to howards they are not based on existing howards lobes and they grind them per hughes requested specs. He actually compared a couple similar lobes they have at multiple lift points and the hughes are a touch faster. So, did the handful of redesigned/fast rate of lift chrysler cams from howards come before or after they started grinding cams for hughes?, and who initially came up with the timing events for the hughes lobes? idk. Only thing he said for sure was the hughes cam profiles are specific to them and are not howards lobes.

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Not trying to say what you were told isn't true. Howards does use a Landis LT1VE CNC cam grinder which makes grinding unique lobe profiles much easier than grinding cams manually on a Berco with actual physical masters. But I find it highly unlikely given the evidence I'm looking at.

After studying the majority of the Hughes cams, I can find the corresponding lobe in the Howards FM .904 lobe list. It looks like Hughes just rounds the Howards lobe up to the next .001 of an inch from what I'm seeing. If Howards has a .5876 lift lobe Hughes calls it a .588. Again not saying what you were told isn't true, but if there is a legit difference it is virtually nothing.