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MyFirstZ · 10-05-2015, 01:56 PM

preload is a little low for my liking. LS7 lifters i'm assuming?

but it also depends on the base circle of the cam. not sure what heads you are running but the deck heigh could be different as well

but 12 turns to get to 0 lash is .6" and then you add base length of the tool (6.8" + .6" + the preload to get the pushrod length) so yes you are correct but I just think the preload is low

The lifter preload spec has such a wide range .02-.8 or .9........ Generally you will get slight variations between exhaust and intake. But sounds like you should run a 7.450 to give you .050" preload. (depends on who you ask)

also the cam and lifters you are running can be the cause of some noise.

you are running 7.4 now? basically no preload on the lifters

10-05-2015, 01:56 PM	#2
MyFirstZ Join Date: May 2009 Location: Highland Mills, NY Posts: 1,915 iTrader: (8) Social Networks:	preload is a little low for my liking. LS7 lifters i'm assuming? but it also depends on the base circle of the cam. not sure what heads you are running but the deck heigh could be different as well but 12 turns to get to 0 lash is .6" and then you add base length of the tool (6.8" + .6" + the preload to get the pushrod length) so yes you are correct but I just think the preload is low The lifter preload spec has such a wide range .02-.8 or .9........ Generally you will get slight variations between exhaust and intake. But sounds like you should run a 7.450 to give you .050" preload. (depends on who you ask) also the cam and lifters you are running can be the cause of some noise. you are running 7.4 now? basically no preload on the lifters __________________ 2000 Camaro SS 610rwhp/570rwtq LS2 440, 12 bolt 3.73, tranzilla t56 Last edited by MyFirstZ; 10-05-2015 at 01:59 PM.