I'm swapping to a comp 218/224 cam with milled heads .020. Anyone know offf hand what size pushrods I need to keep it quiet? Im tired of the singer sound now, and I imagine it will get worse with the bigger cam.

 

I don't know the exact size, but the same amount of metal machined from heads is a good place to start. I would also recommend purchasing a pushrod length checker ($12 from Summit).

 

what is the exact lift on the cam?

 

.562/.568

 

My valve train is quieter than the stock 5.3,I used stock pushrods heads milled .020,Ls6 springs.

 

I would say that's borderline on wither one of them. 7.4 or 7.35. I'd prolly go with the shorter ones if it were me.

 

buy a length checker 1 1/2 turns

 

I was really hoping to get a good idea before the cam swap, but I guess I can put it in then check the length, and just use the stock PR's till I get some new ones.