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| | Intake Manifold Comments |
 | | This manifold type is typically a lower, lighter, and simpler casting, cheaper to make, and giving better hood clearance, as the runners leading from the carburetor to the intake ports are all at the same height. |
 | | This manifold type is typically a heavy and complex casting, as the runners leading from the carburetor to the intake ports of adjoining cylinder pairs are at different heights. |
 | | If the intake manifold is very small (“IR” type, with minimal internal volume), the effect of a change in combustion chamber volume will be much greater than if a tunnel ram manifold is used (where the plenum volume is typically larger than the cylinder volume). |
| victorylibrary.com /mopar/intake-tech-c.htm (4172 words) |
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