Hello i have a 99 gmc k 3500 with a vortech 7400 454 it was having leak down issues and it was about time for gaskets.
So here is what i changed
New intake manifold gasket felpro
New plenum gasket felpro
8 new bosch 0280155884 19 lbs/hr 196 cc/min High Impedance injectors
New cap and roter ac...