Need to know heads first.
Pre 1986 416 heads any pre 86 normal GM intake.
081 post 1986 heads take a special head for that year and a few other years.
Vortec intake it to be used for 1996+ vortec heads!
Pre 1986 416 heads any pre 86 normal GM intake.
081 post 1986 heads take a special head for that year and a few other years.
Vortec intake it to be used for 1996+ vortec heads!
