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Greg Reimer 7376 · 03-27-2009, 07:54 PM

It's very possible that we all had a thing or two to learn about valve springs and cam lobe profiles.Stiffer doesn't always mean more rpms,but could produce a flat cam. The valve train dynos and engine diagnostic equipment didn't exist then that we have now. That definitely could have contributed to the tendancy to flatten out and nose over that these things were known for.Regardless of valve train equipment,what did you do about the 1000+gram piston weight and the short rods?

03-27-2009, 07:54 PM	#8
Greg Reimer 7376 VIP Member Join Date: Nov 2008 Location: Glendora,Calif. Posts: 1,133 Likes: 172 Liked 702 Times in 217 Posts	Re: Back to 409 stuff........ It's very possible that we all had a thing or two to learn about valve springs and cam lobe profiles.Stiffer doesn't always mean more rpms,but could produce a flat cam. The valve train dynos and engine diagnostic equipment didn't exist then that we have now. That definitely could have contributed to the tendancy to flatten out and nose over that these things were known for.Regardless of valve train equipment,what did you do about the 1000+gram piston weight and the short rods?