Rocker Clarification is up!!!

[X-TECH MAN]

Originally Posted by Greg Reimer 7376

You obviously were trained well and made constant use of your level of skill. Some people weren't and didn't.I don't know about some of these people masquerading as machinists out therehowever. How many times did you get parts back out here that weren't done the way you wanted them done?

LOL......More times than I can count. When I went to metal parts inspection a LOT of parts for air craft ejection seats and stuff that goes "BOOM" came in from vendors out of spec.

[Pvt Parts]

Originally Posted by X-TECH MAN

LOL......More times than I can count. When I went to metal parts inspection a LOT of parts for air craft ejection seats and stuff that goes "BOOM" came in from vendors out of spec.

I have a friend who worked in a job shop that made the pivot pins for aircraft wings during the Vietnam War. I can't post here what went on in that shop.

[Jeremy]

We need to be carfull of what we ask for.
I am trying to get ready for next year and I've checked several rocker ratios.

Com Cams 1.5's came out between 1.526 and 1.572 all over 1.5.
Pro Comp's 1.6 came out 1.506, some over and some under the 1.5.
Crane 1.5,s came out 1.427, all under the 1.5.
There was considerable differances from rocker to rocker on all of them.

What they say there ratio's are may not be what they really are.

Jerry Stk.4168

[Jason]

Maybe the old stamped rocker arms aren't so bad after all.

[Alan Roehrich]

Originally Posted by Jeremy

We need to be carfull of what we ask for.
I am trying to get ready for next year and I've checked several rocker ratios.

Com Cams 1.5's came out between 1.526 and 1.572 all over 1.5.
Pro Comp's 1.6 came out 1.506, some over and some under the 1.5.
Crane 1.5,s came out 1.427, all under the 1.5.
There was considerable differances from rocker to rocker on all of them.

What they say there ratio's are may not be what they really are.

Jerry Stk.4168

Just wondering, what was your test procedure?

[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.

[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."


.

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.