Intake manifold
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Factory intakes have run the gambit from simple log intakes with no concern for efficiency or high flow, to aluminum high rise intakes designed for multiple carbs (tri power and dual 4 barrels). | Factory intakes have run the gambit from simple log intakes with no concern for efficiency or high flow, to aluminum high rise intakes designed for multiple carbs (tri power and dual 4 barrels). | ||
| − | There have been "oddities" like Ford using a Q-jet on the 429 Cobra Jet. | + | There have been "oddities" like Ford using a Q-jet on the 429 Cobra Jet, seen below: |
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| + | [[File:429 CJ Q JET INTAKE 2.jpg|thumb|left|300px|429 Ford factory Q-jet cast iron intake]] <br style="clear:both"/> | ||
=Types of intakes= | =Types of intakes= | ||
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===High rise=== | ===High rise=== | ||
| + | [[File:Stealth 8016.jpg|thumb|right|400px|Original Stealth p/n 8016 intake]] | ||
As of 2012 the Edelbrock Performer RPM/RPM Air-Gap intake manifold is considered to be the best of the breed. It consistently makes as good if not better power over a wider range than any of it's competitors. In fact, it rivals the open plenum intakes like the Edelbrock Vic/Vic Jr.- even at the top of the powerband, unless the cam and cylinder head intake volume are up there pretty good. It will always make more bottom end than the open plenum intakes but that is to be expected. But what is surprising is how well the RPM performs at the top of the power band. | As of 2012 the Edelbrock Performer RPM/RPM Air-Gap intake manifold is considered to be the best of the breed. It consistently makes as good if not better power over a wider range than any of it's competitors. In fact, it rivals the open plenum intakes like the Edelbrock Vic/Vic Jr.- even at the top of the powerband, unless the cam and cylinder head intake volume are up there pretty good. It will always make more bottom end than the open plenum intakes but that is to be expected. But what is surprising is how well the RPM performs at the top of the power band. | ||
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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"/> | ||
===Air gap=== | ===Air gap=== | ||
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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. | 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"/> | ||
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. | 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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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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| + | {| | ||
| + | |[[File:Edel pn 2732 carb plate.jpg|thumb|200px|Edelbrock p/n 2732 carb plate]] | ||
| + | |[[File:Carb base gasket 4150-4160 vs | ||
| + | |} | ||
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==Carb spacers== | ==Carb spacers== | ||
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==Gaskets== | ==Gaskets== | ||
| + | [[File:8017 Intake Gasket VORTEC BO LAWS.jpg|thumb|300px|left|Dual pattern intake gasket; Vortec and Gen I SBC]] | ||
[[File:VORTEC GASKET OVER STANDARD INTAKE GASKET.jpg|thumb|200px|left|Vortec intake gasket over Gen I gasket]] | [[File:VORTEC GASKET OVER STANDARD INTAKE GASKET.jpg|thumb|200px|left|Vortec intake gasket over Gen I gasket]] | ||
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