Editing V6 Chevy 90 degree engines (section)
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===OEM=== There is only one production factory Q-jet intake available and it was only made for two years, 1985-'86. It is found in light duty pickups/vans. It's a heavy cast iron dual plane piece, has EGR and a heat crossover. It works OK for mild builds. [[File:OEM 4.3 L V6 Q-jet intake 1986-back.jpg|thumb|left|OEM 4.3 L V6 Q-jet intake 1986-back]] <br style="clear:both"/> The 1985 Astro van had this intake; passenger cars came standard with TBI fuel injection. Passenger cars (B- and G-body) as well as trucks/vans manufactured after the 1986 model year (including 1988-'94 S-series trucks) came with TBI intakes. A central port injection intake manifold (with an upper and lower casting) was introduced in 1992 which has a central fuel injector with six poppet valves (used with the Astro/Safari and S-series SUVs (Blazer, Jimmy, Bravada), later revised in 1996 with sequential fuel injection. Central port injector used with 1996-'01 were known to have fuel leakage where GM redesigned the fuel spider which converts the CSFI system to a multipoint injection system. The limited production Syclone/Typhoon has an intake manifold which uses a multipoint injection setup (with a throttle body similar to the one used with the tune port injected Corvettes and IROC-Z Camaro/Trans Am). Parts for such a conversion do not exist from the aftermarket.
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