First year for Vortec?

[Hank Hill]

Dumb question but I recently bought a 1987 GMC with a fuel injected motor? Is this a standard SBC with a different intake plus TBI and computer or is it the Vortec line of engines?

[Hank Hill]

Also from the pollution pump to the factory air cleaner housing their is a pipe. Shouldnt this have some kind of filter on this pipe where it breathes from the factory aircleaner box?
Sorry if this is a dumb quetion but all the trucks I have ever owned alway had the pollution gear removed so I dont know anything about them.

[strkr98]

vortec started in 95 I believe

[1badgmc]

Vortec V8s began in '96. The Vortec 4.3 V6 was '93 in fullsizes, I believe.

[Captkaos]

Vortec motors were created in 1985 when the Vortec V6 (4.3L ) came out.  Vortec comes from the head design made to "swirl" the intake air.  These heads weren't availible on the V8 until late 1995 (1996 models)

Are you talking about the AIR pump to the air filter assembly?

[Hank Hill]

Thanks for the replies.
Yes i guess its an air pump. Its belt driven on the passenger side. Its some type of pollution gear. There is a tube going from it up into the air cleaner assemble but it doesnt breath the filtered air. It gets the air before it gets to the filter. But the end of the tube where it goes into the air cleaner box sort of has a thing on it where a foam type filter could go.
Was wondering if there is sapposed to be a filter there. Sort of like how on older trucks there is a filter where the motor breathes. You know how the factory crankcase breather breathes from the valve covers through a tube up into your air cleaner houseing and it has its own little filter.
Sorry for such dumb question.
Every older truck I ever owned had the pollution gear taken off before I owned them.