84ke70 Posted November 5, 2010 Report Posted November 5, 2010 Hey guys I'm building up my hot 4k but by the time the head is machined and adding the .440 thou lift cam, rocker spec are going to be out so my push rods are going to be to long anyone know of a push rod that is a .100 thou shorter or custom rods?? :hmm: Quote
Taz_Rx Posted November 6, 2010 Report Posted November 6, 2010 Never heard of anyone needing to change pushrods after a cam change. :hmm: 100 thou is like 2.5mm, which you'll have in adjustment of the rockers. :yes: Quote
altezzaclub Posted November 7, 2010 Report Posted November 7, 2010 Mill the rocker stands?? We ran into this occasionally with the Datsun 1600 OHC. A cam that was ground from a stock unit would have the base circle sunk into it, so you'd jack the rocker adjuster up and then the cam lobe would wipe off the end of the rocker face. It would be best to have the rockers back in the stock position, it keeps the angles and accelerations correct. Quote
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