V6 Chevy 90 degree engines
(→Firing orders) |
(→Intake manifolds) |
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==Intake manifolds== | ==Intake manifolds== | ||
| − | There is only one Q-jet intake available and it was only made for two years, 1985-'86. It is found in | + | There is only one Q-jet intake available and it was only made for two years, 1985-'86. It is found in light duty pickups/vans (the 1985 Astro van had this intake; passenger cars came standard with TBI fuel injection). 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]] | [[File:OEM 4.3 L V6 Q-jet intake 1986-back.jpg|thumb|left|OEM 4.3 L V6 Q-jet intake 1986-back]] | ||
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| + | Passenger cars (B and G-platform) and trucks/vans manufactured after the 1986 model year (including 1988-94 S-series trucks) came with TBI intakes. | ||
===Marine intakes=== | ===Marine intakes=== | ||
| − | There are several marine intakes, both for the Rochester 2G-type 2-barrel and the Q-jet spreadbore and Carter squarebore (uses an adaptor) 4-barrel carbs, all cast iron. In fact the only aluminum intake for the V6 Chevy 90º is a 2-barrel single plane(!) piece that was used for several years on the 200 and 229 cid engines. Not a performance-oriented part, it has a bolt pattern for the Dualjet (basically the front half of a Q-jet), which means no other carbs will fit it and there are no adaptors, either. | + | There are several marine intakes, both for the Rochester 2G-type 2-barrel and the Q-jet spreadbore and Carter squarebore (uses an adaptor) 4-barrel carbs, all cast iron. In fact the only aluminum intake for the V6 Chevy 90º is a 2-barrel single plane(!) piece that was used for several years on the 200 and 229 cid engines. Not a performance-oriented part, it has a bolt pattern for the Dualjet (basically the front half of a Q-jet), which means no other carbs will fit it and there are no adaptors, either. Marine intakes would come with the traditional 12-bolt pattern (200/229 and pre-1996 4.3L) or the 8-bolt Vortec pattern for 1996-present. |
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