Z28MJ

So I am putting in my new heads (prc stage 1 ls6) and cam (MS4) together. I am using a pushrod length checker (using stock rockers with the comp upgrade) and I just want to see if what I am coming up with sounds right.

With cyl 1 on base circle, the pushrod checker at 7.300 it is barley loose to the rocker. So I give it a quarter turn and it is now up lightly touching the rocker, which would give me 7.3125 so if I add in 0.050 pre-load it should put me around 7.362.

I have 7.375 pushrods, would I be ok running those?



This is my first time ever doing this and just want to make sure I get it right Thanks

03Sssnake

iTrader: (20)

LS7 lifters? Yeah that should be fine...You can order custom length push rods as well.

SinisterWS6

Have you set up a wipe pattern to actually make sure your length will be correct?

What are you giving a "quarter turn"? The rockers or are you extending the pushrod checker out?

Just questions out of curiosity lol.

Were the heads milled at all for more comp?

Z28MJ

sorry I forget to mention those, Yes ls7 lifters

Z28MJ

The quarter turn was on the pushrod checker. they are 64cc for now.

03Sssnake

iTrader: (20)

LS7 lifters are ok with a little more pre-load, have mine around .070...I have heard anywhere from .060 to .100 is within an acceptable range, a little more tends to quieten the valve train.