Re: LS7 heads
Hey John. He lowered the car, put stickies on it, and went autocrossing. Said he hooked up in a drift and the half shaft let go. He heard about the head issue at the car show. According to professor google there is a random valve guide issue in LS7's up to around 2014. If you have it and let it go you are going to swallow a valve. Some guys elect to change out the guides as a preventative measure. Anyway, he was looking past that to aftermarket heads and perhaps another cam.
67RSSS......owned since 69. A basket case for most of it.