Justin Adams

I can't find any threads that are making a whole lot of sense to me I guess. I'm going to be running a low lift cam. Am I going to gain anything by going with a different ratio rocker, or should I just keep my stocks and do the trunion upgrade?

KCS

iTrader: (20)

Yeah, the higher ratio rockers will probably be worth some power.

Justin Adams

enough to be worth spending the extra $300? And probably just a 1.8 ratio? To be honest, I don't understand all of that stuff at all. I'm using a 224/230 .553/.547 111+2 cam with ls6 springs, and stock length pushrods. The other thing I was curious about, is if I have my heads shaved 0.015, does that affect the rockers and pushrods at all or is it not enough go really matter at the end of the day?

KCS

iTrader: (20)

It's your money, I can't tell you if it's worth it or not.

Compared to OEM rockers, there are several advantages to using a roller tipped rocker. Not just a higher ratio. If you want a lot of lift (.640"+) or if your heads have bronze guides, you would really want to consider a rocker with a roller tip to reduce guide and valve wear. If you have a solid lifter or a short travel hydraulic lifter, you would want to consider an adjustable roller rocker so you can make fine preload/lash adjustments.

Shaving the heads .015" will probably increase the preload in the lifter with the same length pushrod. Depending where your preload is now, you might want a shorter pushrod.

kinglt-1

iTrader: (26)

you will need different valve springs if you add 1.8 rockers...LS6's will not be enough. The lift will increase to roughly .595 .590 with 1.8's.

dreadpirateroberts

iTrader: (1)

I would be concerned with the extra weight over the valvestem vs. stock rockers when making a valvespring selection as well, not just the extra lift.

And honestly, i wouldn't use the blue springs on anything but a stock cam.

Everytime you change a cam or mill or swap on different heads, or use a different thickness gasket, always check for proper preload.