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head milling
https://www.slantsix.org/forum/viewtopic.php?t=11421
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Author:  Guest [ Tue Jan 11, 2005 7:22 pm ]
Post subject:  head milling

I have a hydraulic lifter slant 6 (1983) and was wondering if I have to get shorter push rods if I milled the head 0.100"? The rockers are not adjustable.

Author:  Doctor Dodge [ Tue Jan 11, 2005 9:22 pm ]
Post subject: 

I would say yes.
Shorter pushrods or shim-up the rocker arm assembly.
The best deal would be to have adjustable push rods but I don't know of any that allow the oil flow thru the pushrod while being long enough.

The best way to "set" the hydrualic lifter is to give it just a little "preload", enough to take-up the clearance and keep things quite but not a lot, so they don't 'pump-up' and hang the valves open at high RPMs.
DD

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