Roller Cams in Stock Eliminator?

[Dan Fahey]

How about a rule like.....max 150lbs seat pressure!

[Billy Nees]

There ya go! And at the same time, it would make all of those 396/375 Comp motors more like Stocker motors again!

[Dan Fahey]

Originally Posted by Billy Nees

There ya go! And at the same time, it would make all of those 396/375 Comp motors more like Stocker motors again!

This is a very big issue!
Whole lot of racers experiencing wiped out cams and engines.
The mechanical limits on cams and lifters can take has been reached long ago.
Yet Engine builders find ways and processes to add more.

Maybe a loping engine like a Olds 455 would not benefits so much.
Engines exceed 6500rpm, more like 7000+ are losing it.

Like beating a dead horse! (Need to post that picture again)
Keep the current cam rule. Limit the Spring.
Such as a Spring Ratio based on size of the Largest Valve.
NTE...some stated Spring Seat pressure!

Too much Spring Pressure is like More Snow

D

[sammy pizzolato]

Like Mike said is true!!! the cost and time is unreal we need to ban together and loby for roller lifters. the big problem is the oil it's not there any more with all this EPA crap the world has gone in the tank. when you talk to the Cam people they won't sell cam's to the public without being a roller because of the oil. and the spring Pressure is not the problem!!!!!!!!!! it's the oil.

[Chipper Chapman]

How many of you guys AREN'T using some form or brand of racing oil? Which all have the proper additives and such for flat tappet use. The issue is that many are running roller spring pressure on flat tappetts. You want a roller, go to super stock and get the intake that goes with it!

[Billy Nees]

Originally Posted by sammy pizzolato

Like Mike said is true!!! the cost and time is unreal we need to ban together and loby for roller lifters. the big problem is the oil it's not there any more with all this EPA crap the world has gone in the tank. when you talk to the Cam people they won't sell cam's to the public without being a roller because of the oil. and the spring Pressure is not the problem!!!!!!!!!! it's the oil.

Yeahhhhh, no the problem is the spring pressures and the lobe designs.

[Run to Rund]

As noted above, most of the cam/lifter failures could be avoided if max spring pressures were something like 170 seat, 400 open. That limitation would force more lobe profile development, I suppose, but the current combination of square lobes and 550 lb open doesn't have longevity.

[Dan Fahey]

Originally Posted by Run to Rund

As noted above, most of the cam/lifter failures could be avoided if max spring pressures were something like 170 seat, 400 open. That limitation would force more lobe profile development, I suppose, but the current combination of square lobes and 550 lb open doesn't have longevity.

OK see one idea of 170lb/400lb Open..
Looks reasonable..ANY other feedback...?

What is the breaking point?
I am on the NO Roller Lifter side of the argument and No Roller Rockers.
Will Stock Stamped Rockers should survive this rating?
Already saving money !

Should we also Limit Retainer Height to say 1.80 inches?

Are many cams exceeding 550 inches lift?
Most seem to be in the .400 to 450 inch range..

IHRA and NHRA has to be watching this !

Dan