That looks like at least one injector is pissing...
Pull em all and get em popped
6.5block in 6.2 trim with a TH400 attached
95 6.5 block, most of the IP, flywheel, and pressure plate.
95 Chevy Suburban 1500 "blue bomber"
2000 Chevrolet extended cab long bed 2500 6.5L HO
94 GMC extended cab long bed 6 lug truck 6.5L
Z71 ext cab standard bed S vin with a blown headgasket.