Ok, I'm totally confused now. After extensive research this is the information I have on the LS6 cam pushrod length and LS6 head pushrod length. I've talked with various shops mainly Motorsport Technologies Inc. and they say If you install an LS6 cam in a 5.3 you should stay with the 7.4 pushrod length unless the heads have been milled. They also told me when I install the LS6 heads on my motor that the longer valve stem length won't make a difference either and I need to stay with the 7.4 pushrods unless the heads have been milled.

Give your input on this if your running an LS6 cam or LS6 heads on your 5.3 or 5.7.

Thanks