Explain to me again, please

[KRatcliff]

Originally Posted by Frank Castros

When the Cam Duration and Valve Spring rules were changed many years ago that created a Domino effect that changed Stock Eliminator forever.

Just my opinion, but I think you are hitting on the reason for changes such as these. Simplification of tech because they have lost most everyone that could accurately measure cam duration. Almost every change looking back over the last few years has been to make it easier on the tech officials if they ever do look at something. Same thing with the lifter issue. Anyone can eyeball a roller vs flat and it is easier to measure lift without replacing the lifter with a solid if it is already solid.

Could be all wet, but this is why I think we see changes like these. This is not to be read as I agree with the simplification for them to do their job.

[Frank Castros]

You're correct about their ability to properly check Cam Duration and shame on the N.H.R.A. for that. Greg Xakellis had a great team then and it was not a D1 issue and I doubt it was a D3 or D4 issue either as they also had great teams as well. But the Valve Springs? Come on man, anybody can check spring pressure.

[Bill Bogues]

Put the "stock" back in "stock".... good start would be Pressure on valve springs.

[L.Fite]

The point, however, is that if a 750-850 HP, 358 CID, canted valve, flat tappet engine in a Cup car can run 500 miles at over 9000 rpm with a stock diameter solid lifter, then it's hard to imagine why it can't be done in a stocker that doesn't anywhere near that RPM and is raced a quarter-mile at a time.

You're still comparing apples to grapes...

The technology used to make a NASCAR engine live is so for advanced it makes a SS engine look like a high school mechanics class project.

[L.Fite]

Originally Posted by Bill Bogues

Put the "stock" back in "stock".... good start would be Pressure on valve springs.

You are probably correct... But it's going to be awful hard to stuff that genie back in the bottle...

[Billy Nees]

Originally Posted by Frank Castros

You're correct about their ability to properly check Cam Duration and shame on the N.H.R.A. for that.

Ya know, I think readers will find (and I hope that someone will add to this or correct me) that the major issue with 21st Century Tech (and late 20th) is that (probably) 20 or 30 years ago the Government (you all remember them, the guys looking after our best interests) "forced" NHRA to start treating Tech people like employees and paying them accordingly. Until that time, many Tech people volunteered their time or were paid a token amount. When NHRA was "forced" to pay, they just cut back the number of Techs to an absolute minimum (and beyond).
OBTW, ANOTHER reason to appreciate those "old" Tech guys!

[Larry Hill]

I for one have had, lifter problems both ceramic and steel, cast core cam failure, and an oil pan full of steel shavings from a ceramic lifter failure on a steel cam. Each time a failure occurred we lost everything but the heads, intake, rods, and sheet metal. I put eight sleeves in a block, the block broke after a few runs. So we , a bunch of smart people that have helped me, have attained a small amount of reliability with the six pack car.

The cam is factory size journals and lift

I know the other shoe will drop sooner but I hope it later.