426 Hemi Rocker Tip Geometry Adjustment

[snakeoil24]

Everything hemi 3x cost and only concern is rocker arms hitting retainer no easy answers, if not hitting then live with 50 year old stuff

 

[ignition1]

Everything hemi 3x cost and only concern is rocker arms hitting retainer no easy answers

Rocker to retainer clearance is good on close & open.

Guess it comes down to the chances we take and how much we want to spend to minimize the risk.

 

[snakeoil24]

Yes and remember the age of block and heads which is likely 1966 or 68 production

 

[63fury500]

I have 426 hemi rocker stand shims 060 thick,will sood have other thicknesses

 

[Moparguy59]

Seems like hemisphere aren’t made for long life(like big block Chevy )
Puts a lot wear on your guides & stem’s when you aren’t true
I choose to run the least spring pressure while many run a ridiculous springs even on the street
The racers love talked to have ran stock rockers
Unless you spend $$$ you’ll be wasting your time for 7000 or less

 

[HEMI-ITIS]

When you take your time and do it right there is longivity. Whenever I adjust the valves {solid roller}they just stay the same with no adjustment needed.
Street driven and once is a blue moon I'll get to the track.

 

[RemCharger]

Seems like hemisphere aren’t made for long life(like big block Chevy )

Yes. Just like big block chevy aren't made for racing( like a chrysler hemisphere)

 

[Max Wedge 413]

I have 426 hemi rocker stand shims 060 thick,will sood have other thicknesses

Do you still have/do these? Need something like .080" for my setup. Eddy Vic Jr, Stanke stands, Stage V rockers, Ferrea std valves and it's off a bit otherwise.
Appreciated -

 

[not so famous bob]

I know Harland Sharp and others actually make different offsets in their rockers for different head brands. I coulda swore I saw some shim kits that would offset the shaft closer or further away from the valve for such instances using different valve train components with different combinations.

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wedge motor ^^^^^^^^^^^^^^^
I raced a stock set off rocker arms for 14 yrs on the old hemi belvedere , even with a cam dynamics 785 lift solid roller =no problems !!

 

[erickson]

do you have original factory rocker arms some of the new ones are junk made over seas The purple stands look great. They are made by my shop

 

[Bird 426]

Just a suggestion, I have been told not to run lash caps on a hydraulic cam. If a lifter bleeds down, it may toss the cap and then.....

 

[Hemirunner]

If you need to adjust geometry, Indy makes these.

 

[Hemirunner]

Just a suggestion, I have been told not to run lash caps on a hydraulic cam. If a lifter bleeds down, it may toss the cap and then.....

They’ll toss them with a solid roller at 8000rpm on the rev limiter as well. Been there done that.

 

[Max Wedge 413]

If you need to adjust geometry, Indy makes these.

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Not sure they are still available - too bad they are iron, but a good idea

 

[Ceedawg]

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this is #5 exhaust, the rocker arm looks short overall and doesn’t really cover up the valve tip. contact start at 30% and ends around 90%.

I know about the lateral shims that go around the rocker shafts as #5 has some of those shims installed.

Does the intake ride ok, or is it too far outside? Pull the alignment pins out of head then shift the whole assembly to align up. Once that head bolt is tight I doubt the stand will move around. I’m thinking seriously of putting one piece stainless valves in my build after seeing that mess on Nicks Garage with the Hemi loosing an ex valve head, 6 pistons, both heads, block will need 4-5 sleeves