i am building a 5.3 with a lunati 55003 cam , cnc ls6 heads from chevrolet,my question is what length push rods should i use and i recieved the cam today and it says it needs to be installed 4deg out how do i do this????????thanks for all coments...

 

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Pushrod lengths are not the same in all engines, especially if you have swapped out the heads. I would resommend that you get 3 different lengths (stock, +.050", -.050") and check the geometry to see what is needed. Then you can return the ones you don't use. Installing a cam 4deg out means installing it either 4deg advanced or 4deg retarded. I'm not sure what "out" means at this point, they need to be a little more clear.