273 Mopar Intakes
Edelbrock #LD-4B
* Aluminum Dual-Plane High-Rise {For 1966 '273' and later}
* Carburetor Mounting Height ..... 4.90"
* Port Size ............................... 1.05" x 1.95"
* Square-Bore Opening
Generally regarded as the 'best overall' Intake Manifold for the 273.
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Edelbrock #D-4B
* Aluminum Dual-Plane High-Rise {1965 '273'}
* Carburetor Mounting Height ...... 4.90"
* Port Size ................................ 1.05" x 1.95"
* Square-Bore Opening
Same as above, just for the early 1965 '273'
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Offenhauser 360* 'Equa-Flow' ~ #5700
* Aluminum Dual-Plane High-Rise {1966 '273' and later}
* Carburetor Mounting Height ..... 5.20"
* Port Size ............................... 1.07" x 2.00"
* Square-Bore Opening
Generally regarded as the best 'Track Performance' Intake, due to the high-rise
Carburetor-base.
The 360* Design, and tall Manifold provides for optimal Top-End performance.
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Offenhauser 360* 'Equa-Flow' ~ #6699
* Aluminum Dual-Plane High-Rise {1965 '273'}
* Carburetor Mounting Height ..... 5.20"
* Port Size ............................... 1.07" x 2.00"
* Square-Bore Opening
Same as above, just for the early 1965 '273'.
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Weiand 'Action+Plus' ~ #8007
* Aluminum Dual-Plane High-Rise {1966 '273' and later}
* Carburetor Mounting Height ..... 5.41"
* Port Size ............................... 1.00" x 1.96"
* Spread-Bore Opening
An excellent 'Street Performance' Intake. The 180* Design, with
short-runners plumbed into long-runners, provides for good Torque
at the top of the Bottom-End and thru Mid-Range, and Power in Mid-Range
and into early Top-End.
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Edelbrock 'Performer' ~ #2176
* Aluminum Dual-Plane High-Rise {1966 '273' and later}
* Carburetor Mounting Height ..... 4.63"
* Port Size ............................... .97" x 1.95"
* Spread-Bore Opening
A solid 'Street Performance' Intake with an emphasis on Torque throughout
the full-range, from 'Idle' to 5500 RPM's.
The 180* Design provides for a crisp Throttle-Response.
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Offenhauser 360* 'Dual-Port' ~ #6020-DP
* Aluminum Dual-Plane High-Rise {1966 '273' and later}
* Carburetor Mounting Height ..... 5.20"
* Port Size ................................
* Square-Bore Opening
The 'Gimmick Intake' with a 'Dual-Port' runner design.
Generally good for Street-Driving where mileage and Low-End performance
was required.
The #6021-DP Manifold is a Spread-Bore Opening design.
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Offenhauser 360* 'Dual-Port' ~ #6022-DP
* Aluminum Dual-Plane High-Rise {1965 '273'}
* Carburetor Mounting Height ..... 5.20"
* Port Size ...............................
* Square Bore Opening
Same as above description.
The #6023-DP Manifold is a Spread-Bore Opening design.
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Weiand ~ #7510
* Aluminum Single-Plane Low-Rise
* Carburetor Mounting Height .... 3.90"
* Port Size .............................. .95" x 1.95"
* Square-Bore {Open-Plenum}
A 'Low-Profile' Intake, with a small-port and short-runner design, much like an early Edelbrock Torker.
Good for Mild Street Performance 273/318 engines, with an emphasis on Low-End Torque and moderate Mid-Range Power.
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Edelbrock 'SP2P'-318 ~ #3275
* Aluminum Dual-Plane Low-Rise {1966 '273' and later}
* Carburetor Mounting Height .... 4.00"
* Port Size .............................. .90" x 1.90"
* Spread-Bore Opening
Designed for improved fuel-mileage and low-emission efficiency. Small runner-ports with narrow passages increase air-velocity, which helps increase Low-End Torque.
It is 'not' regarded as a Performance Intake Manifold.
