shim the rocker studs????

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What ever the stock stem height was... and now is, the diff is how much the rocker needs raised to maintain the stock'ish lifter pre load.
 
CW,
On engines that use rocker studs, I have shimmed the studs MANY times.
But not for the reason you want to shim your studs.....
The lower the rocker sits on the stud, the less the bending/flexing force there is on the stud. A stud that flexes causes loss of valve lift & loss of area under the curve. Doing this, you need to make sure you have enough thread engagement in the head. If the fastener is into steel or cast iron, thread depth equal or greater than the thread diam is considered enough. You can also Loctite the studs.
 
Bewy said:
CW,
On engines that use rocker studs, I have shimmed the studs MANY times.
But not for the reason you want to shim your studs.....
The lower the rocker sits on the stud, the less the bending/flexing force there is on the stud. A stud that flexes causes loss of valve lift & loss of area under the curve. Doing this, you need to make sure you have enough thread engagement in the head. If the fastener is into steel or cast iron, thread depth equal or greater than the thread diam is considered enough. You can also Loctite the studs.
Click to expand...
I gave up on the rollers on this motor it's my daily and my inly magnum and PIE stuck it in me with these rollers and I'm not willing to spend anymore wasted money on these take your best guess magnum stud mount problem that just amplifies dodges already stupid lifter pushrod angle. All my other motors are shaft mount with no prob but pr length. I don't see the advantages of the magnum to the la in a truck torq motor low rpm and yeah they flow better but for the money needed to make them scream I would rather do a 318 or 340 but my opinion doesn't count to the public or my ex's lawyer lol. Thanks for trying to help and I'm very grateful and agree with your answer .
 
MOPAROFFICIAL said:
What ever the stock stem height was... and now is, the diff is how much the rocker needs raised to maintain the stock'ish lifter pre load.
Click to expand...
All great info thank you . I have used my oem rockers on this motor and when I do the next one I will use trick flow heads with shaft mount they are the better aftermarket design to me. I wasn't willing to let PIE 'S bad business decide any more of my build and just find some chevy man that needs these. Thanx again for the help very grateful
 
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