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? About P-90 Head


Synlubes

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Ok, the P-90A is a hydro lifter head and the P-90 is ajustabe(non-hydro)! Now, does the P-90 head have the same oil passages(that feed the hydro lifers) cast into them as does the the P-90A? I know the whole size is different where the "lifters" go! Thats not what this ? is about!

 

Hope this makes sence!!!

 

I have a P-90A that i was going to have threaded selves made to be able to install ajustable rocker pivits, but have a concern about the oil supply wholes that feeds the hydro lifters!

 

Any info would be helpful!

 

If the P-90 does not have the oil feed wholes I would like to go with it instead the P-90A!

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Ok, thanks I did not know that!

 

So, maybe they are from the same casting and some are drilled for hydro lifters and some are drilled for ajustable pivits???

 

Again, my concern is with the pressurized oil feed under the installed selves and ajustable pivits!

 

Any other wisdom out there!

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