Rocker Clarification is up!!!

[Jim Wahl]

SECTION 10A: STOCK CARS, ENGINE:1, ROCKERS ARMS (Page 5) (1/19/2012)
"OEM or a Aftermarket rocker arm permitted. Either adjustable push rods or adjustable OEM rocker arms permitted on any application, but not both. Needle/roller bearing pivots and roller tips are permitted for all applications. Must remain same design as original application (i.e. stud mount must retain stud mount, pedestal type must retain pedestal type and shaft type must retain shaft type. Stud girdles prohibited.) Stamped steel OEM and OEM-type rocker arms may be reinforced."


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[ss wannabee]

All good points by everybody here...With all the trouble...almost makes you want to yearn for the old days...the real STOCK Eliminator...(lift-duration-overlap-spring pressure...and REAL stock rockers!)

[Jeff Teuton]

How about this. Make sure your rockers are the same configuration like the book says. Make sure the ratio stamped on the rocker is the same as the 'blueprint specs', and make sure your cam passes with a solid or blocked lifter. What am I missing here.

[Jim Wahl]

Originally Posted by Jeff Teuton

How about this. Make sure your rockers are the same configuration like the book says. Make sure the ratio stamped on the rocker is the same as the 'blueprint specs', and make sure your cam passes with a solid or blocked lifter. What am I missing here.

You all know Jeff is right. If you want to take advantage of the new rocker rule you will have to do your homework! Jim


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[Jason]

Forget the ratio stamped on the rockers. Those numbers evidently mean nothing. Be sure to measure the lift at the retainer AND at the lifter so you can do the math when you check the ratio of the rocker arms yourself. What should be a simple bolt-on is turning out to be a real cluster that no one ever expected.

Remember...watch what you wish for, it might just come true!!!!!

[Jeff Lee]

I think it's a real cluster for those that still ask to go to the bathroom...

[Aubrey N Bruneau]

We can't control manufacturer's tolerances. I mean REALLY... 1.7 ratio... give or take .05.. ?
Who gives a $%#T ? !
Lift at the retainer below blueprint spec... studs, pushrods, springs, all of the specified configuration and mounting. We haven't changed valves, hacked up the heads, or gone over factory lift at the valve.
WHAT is the problem ? !

[mopar jeff]

Originally Posted by Jim Wahl

SECTION 10A: STOCK CARS, ENGINE:1, ROCKERS ARMS (Page 5) (1/19/2012)
"OEM or a Aftermarket rocker arm permitted. Either adjustable push rods or adjustable OEM rocker arms permitted on any application, but not both. Needle/roller bearing pivots and roller tips are permitted for all applications. Must remain same design as original application (i.e. stud mount must retain stud mount, pedestal type must retain pedestal type and shaft type must retain shaft type. Stud girdles prohibited.) Stamped steel OEM and OEM-type rocker arms may be reinforced."


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How come when I look at NHRA's amendment page this part is crossed out?

Either adjustable pushrods or adjustable OEM rocker arms permitted on any application, but not both.

Does that mean that part of the rule no longer applies?

[Jeff Teuton]

They threw me out last year for having 1.65 rockers and the spec said 1.60. The cam passed. Up to yall. I got 1.60's on the car now.

[Jeremy]

Jeff, I thought that was just to keep you from getting horsepower!
Jerry

Did they really check or just see what was on the rocker?