td1168

iTrader: (2)

What affect will running .125" preload have on my valve train? I measured with a pr length checker and thats what I'll end up with using my 7.400 pushrods. Also my lengths vary so .125 is the heaviest preload. Some lifters will end up at .100"

badazz81z28

iTrader: (6)

Too much imho

td1168

iTrader: (2)

Thanks for the reply badazz81z28. I really haven't got much other advice about preload. Jake at TSP told me between .040" & .080" but I've seen guys running as much as .100." I'm gonna go ahead and order 7.350 pr's to put me where Jake recommended.

89gmcs15

iTrader: (7)

i ran .080 with no noises with my ls7 lifters

td1168

iTrader: (2)

What kind of cam are you running?

A.R. Shale Targa

iTrader: (2)

THIS ^^^^^^^^^^^^LS7s typically work with less preload than old LS1s

dr_whigham

iTrader: (49)

I'm running one full turn from zero lash to 22ftlbs and no issues here.

Sales@Tick

iTrader: (3)

.050-.060 is what we set them up with here at the shop, but we've run as much as .080 with no issues.

Ferocity02

iTrader: (60)

I've run up to 0.100" without issues, but went with 7.325" pushrods to average 0.075". 0.125" is too much IMO.

RezinTexas

0.045" here, quiet as a mouse

studderin

iTrader: (28)

thats alot, I wouldn't run that for a long time. Did you check how much preload you have until the plunger bottoms out? You will crack the lifter body, or have plunger, and wheel problems if it runs like that.