Valve adjustment card !!

Oldmanmopar said

Well I asked my son. Why it is not advisable to use the mopar performance method for valve adjustment?

I use to have that same sticker on my Duster when it was white years back, And I used it.

He said the reason that method is not used anymore is because the cams today have advance and retard built into them. You probably can use it with old profile cams. He said that method is a thing of the past.

I am going to ask him to show me the difference the on next motor with adjustables. I think a mechanical lift BB ford is in one of the mills.

Most all race shops I have been to use the EOIC method now. I always bring up the sticker I used and they just laugh. You can see the sticker between the wiper motor and the heater hose nipples on my car.

View attachment 1715790468

View attachment 1715790470

Click to expand...

Let’s think for ourselves here a minute and address the “cams of today” and “advance/retard” built into them statement before we run off enlisting answers from others:

So someone is essentially saying that Nobody ever had cams with advance (common) or retard (highly unlikely) built in or that nobody actually advanced or retarded cams until the “cams of today” came about????
that we all then assume must have some unique lobe separation angles, intake center lines, and base circles never seen before??? A 110 in at 106 or a 106 in at 100 or any number of LSA/ICL combos for a cam “not of today” vs a “cam of today” are different when setting lash?

I’d be rethinking that one.

Me, I’ll stick with the chart, and check my valves with the lifter at the exact same spot on the base circle of the lobe....old cam, new cam, what ever LSA whether with built in advance/retard by the manufacturer or done by me.
And I’d say prove it is not accurate or consistent