Is this k5 stock height with 33’s?

[Richard]

The first few posts in my build thread show my 72 K10 stock height on 31's. Would be close to your Blazer. Your Blazer appears to be stock height to me, maybe an add-a-leaf or some thing else in the rear.. Fender well gap in front is less than mine. Gap would be about 1" less than mine doing the math. Off the shelf leafs will provide no better outcome. Deaver, Alcan or Atlas can provide something that will make a difference.