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Sorry Mavrick but "you can probably leave the lifters in and just drive" is not a sufficient answer for me.
I wont run hydraulic lifters with any lash. (Defeats the purpose plus possible engine...

The basic mystery this engine faces with these NEW HYDRAULIC lifters is as follows:
LIFTER PRELOAD In.Hg VACUUM
2 Turns (per book).........6-7 (70 psi compression)
1 Turn...

Thank you Jenz38
Your advice to " give the hydraulics zero lash at running engine , check it by your ears" to confirm would be:
Start with warm running engine then back off (currently 1/8 turn)...

Thank you very much Suntreemcanic and 322bhn or your assistance!
Latest update:
Put 100 miles on car to "seat rings" and measure if any improvement in compression, measured no improvement in gauge...

Bob,
I'm terribly sorry for not mentioning that I had rebuilt the engine myself. ( I try to build one every thirty years or so )
I'm trying to backtrack an error I made in the engine rebuild. (low...

Yes I was lucky enough to find a second compression gauge and vacuum gauge to double check readings.
I could have a separate vacuum problem, but I carefully inspected intake manifold casting for...

Thanks for asking. Forgot to add :
Timing chain was checked (for Hyd lifters) using dial indicator on valve spring cap as outlined on 1952 Buick service manual. Timing was correct per that...

In an attempt to keep my rough 52' super wagon from being hot rodded in the future (by myself or others) I undertook to rebuild the engine and Dynaflow.
When running engine I could not get it to...

Sorry for delay.
Pressure reading on front pump came up to 90 where it should be. Small handheld drill did not have nearly enough torque to fill an drive the torque converter to get other PSI...

If it of any help, here is a picture of the coupler and "driver" I used to spin the trans.
The drill had just enough power to create the required appox 100psi to test internal hydraulics.

Thanks everyone for your thoughts. The whole issue arose when I removed the rear main cap to inspect bearing and discovered the rope seals had rotated about 1/2", this condition would not allow the...

One other option I see is to remove the lower half of the seal (seen dangling in the picture), this will leave a 1/2" or so void in the engine side groove.
twisting in a "corkscrew" seal removal...

Hi everyone,
Was interested to now if anyone has knowledge of weather or not the BEST#3764 molded (w/ steel insert) can successfully be installed with crank still in the block? Bob's Automobilia...

Thanks for the words of support! The internals are surprisingly not as complicated as a modern transmission, was able to completely disassemble it without any special tooling. Now putting it back...

The "wear" amounted to be just shy of .0025 as measured by trying to slip a shim under the flat.
It is "cupped" by that much. I took It to a local transmission shop and they said the same thing...

Hi Folks,
Is it "standard practice" to turn down a transmission drum to clean up the surface?
My 52' Dynaflow is coming apart nicely with no signs of damage or excessive wear except the OD surface...

That was my suspicion. Why go thru the trouble to not exceed .004 clearance to then go blow that with a .010 gasket that will squash down to some unknown dimension.
Thanks for your help.
The...

I'm almost too embarrassed to ask but I must to get the correct answer.
When I took my oil pump apart some time go I did not record/remember if cover had a gasket on it or not.
The Buick manual...