Intake manifold
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Professional Products makes a knock-off of this design also, called the Typhoon, p/n 52021 for satin finish. | Professional Products makes a knock-off of this design also, called the Typhoon, p/n 52021 for satin finish. | ||
[[File:Typhoon 52021.jpg|thumb|300px|left|Typhoon p/n 52021]] <br style="clear:both"/> | [[File:Typhoon 52021.jpg|thumb|300px|left|Typhoon p/n 52021]] <br style="clear:both"/> | ||
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| + | ===Air gap=== | ||
| + | The so-called "air gap" intake concept has been around since the late '40s-early '50s. It has been used by various auto makers through the years, like Pontiac, as original equipment. | ||
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| + | Only because the Chevy V8 uses the intake bottom to seal the lifter valley is this called to attention. Other engine that use a separate plate to cover the lifter valley have had "air gap" intakes all along. | ||
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| + | [[File:Rpm 7501 air-gap.jpg|thumb|400px|left|Edelbrock SBC RPM Air-Gap intake. Air can circulate beneath the plenum; plenum is separated from the hot motor oil being splashed onto the bottom of the intake where it seals the lifter valley.]] <br style="clear:both"/> | ||
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| + | The Edelbrock Air-Gap intakes will require a longer warm-up. In cold weather this can lead to driveability problems, almost like a tunnel ram. The air/fuel mixture- if tuned for a fully warmed up engine- will be lean until the engine is up to temp. This can be compensated for by the choke, but if using the choke, spirited driving is out until the choke is fully open. | ||
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==Single plane== | ==Single plane== | ||
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==Adaptors== | ==Adaptors== | ||
| − | Adaptors have been used since the beginning. There | + | Adaptors have been used since the beginning. There are adaptors to mount dual carbs to a single carb intake, to mount 4 barrel carbs to 2 barrel intakes and vice versa, there are adaptors to mount a squarebore carb on a spreadbore intake and vice versa, there are adaptors to mount a squarebore carb on a Dominator intake, etc. |
One of the more useful adaptors (if it can be called that; Edelbrock does) is the Edelbrock p/n 2732. It is a simple flat steel plate and a pair of gaskets used to prevent vacuum leaks at the secondary side of the intake when mounting a squarebore carb onto an intake having a carb flange designed to accept ''either'' a squarebore or spreadbore carb. | One of the more useful adaptors (if it can be called that; Edelbrock does) is the Edelbrock p/n 2732. It is a simple flat steel plate and a pair of gaskets used to prevent vacuum leaks at the secondary side of the intake when mounting a squarebore carb onto an intake having a carb flange designed to accept ''either'' a squarebore or spreadbore carb. | ||
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