Ok well I just finished up my 3.4 swap but I cant seem to get
the valve chatter under control....Maybe they are collapsing?


Specs on what im running


280 delta grind
1.6 rocker
.500 lift
with a 305 open pressure


I have a set of blue racer lifters in it with a
1/3-1/2 turn preload(was 1/4 to start)


and I do have a high volume melling pump in it also


Thanks for the help guys most of the time I can get the engine stuff down but this has me stumped

 

What is the bind hight on the valve springs your using? That .500 lift the cam specs using 1.5 rockers correct? So your 1.6 rockers pop out .533 inches of lift. I'm just curious what the specs are on those springs your using.

So what is your installed valve hight minus you spring bind hight?

 

no bind I have 110 thousands between the coils and the cam is 470 with 1.5 and 500 with 1.6....the seat pressure is 115 if that helps any