Originally Posted by Twister97
ok, but getting the springs anyways are a good precaution...say i get those rockers then some new pushrods. then do i need those springs or can i get away with it?
It really is hard to say. Some people have done it with no problems. However due to the added stress if you have a weak spring or worn out springs damage could result (spring snap, valve contacts a piston, boom). The safest bet is to do stronger springs, retainers, and rods. How safe do you want to feel? If you get an aftermarket pcm you will probably experiance valve float without the strong springs and OR rods due to the higher rpm range.
Any time you start modding there is always supporting mods that should be done. I did the 1.9 rockers and was fine (low miles 30K) until I did the PCM. I started to get valve float at about 5800 rpm. I was going to get a cam anyway so I upgraded my springs, retainers, rods and the valve float went away. Now with the cam I did the timing chain at the same time. I probably would have been fine without it, but with all the valvetrain upgrades my car can safely shift up to 7 grand. How much is peace of mind worth?