![Chevy BBC 454 Oval Port LowRise Aluminum Intake Manifold [Polished] Impala and Buick Roadmaster](https://cdn.shopify.com/s/files/1/0762/0316/3867/files/1-147-017.jpg?v=1785143075)
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Impala and Buick Roadmaster
These are direct plug replacements for OEM coils
along with optimized winding
They're so tough
equal-distribution layout produces great midrange torque without compromising top-end power
Chevy BBC 454 Oval Port LowRise Aluminum Intake Manifold [Polished] Impala and Buick RoadmasterThe Speedmaster LowRise Manifolds are our lowest profile manifold and is also the only one that is street legal on pollution controlled vehicles. It is set up to accept a spread bore carb but comes with an adapter plate that permits the use of square bore carbs. To remain street legal with a square bore carb, you must use one that is also approved as street legal for your application.
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