Engine specific. T he headers need to bolt onto the exhaust ports on the engine so regardless of the car the engine must be the same
adding headers will allow engine to breath better and boost up horsepower but not by much, headers also make you vehicle louder with pipes.
It does depend on the engine, but I'd shoot a little higher and say headers will give a good 15-30 hp 3 or 4 hp depending on the engine
Several companies manufacture headers specifically designed to fit a 455 Buick engine, including TA Performance, Hedman Hedders, and Doug's Headers. These manufacturers offer various designs and materials to optimize performance and fitment for enthusiasts and restorers. It's important to consider factors like intended use, exhaust system compatibility, and any modifications when selecting headers for a 455 Buick. Always check for specific compatibility with your vehicle's year and model.
Exhaust headers are components in a vehicle's exhaust system that improve engine performance by directing exhaust gases away from the engine more efficiently. They replace the factory exhaust manifold and are designed to reduce back pressure, allowing for better airflow and increased horsepower and torque. By optimizing the exhaust flow, headers can enhance engine responsiveness and overall efficiency. Additionally, they often contribute to a more aggressive engine sound.
The horsepower gain from installing an aftermarket intake and headers can vary significantly based on the vehicle and the specific parts used. On average, you might expect an increase of 10 to 30 horsepower when combining these modifications. However, the actual gain will depend on factors such as engine size, tuning, and overall vehicle condition. It's essential to ensure that these modifications are complemented by proper tuning for optimal performance.
For short headers suitable for a 1979 Trans Am with a 403 Olds engine, you can check with specialty automotive parts retailers, both online and in-store. Websites like Summit Racing, JEGS, or Year One often carry performance parts for classic cars. Additionally, forums and communities dedicated to classic Trans Ams may offer recommendations or even used parts for sale. Always ensure that the headers are compatible with your specific engine and vehicle setup.
Pontiac 455 headers generally do not fit a Buick 455 due to differences in the engine's exhaust port locations and bolt patterns. While both engines are part of the General Motors family and share some similarities, the specific design and dimensions of the exhaust manifolds and headers vary. If you're looking to upgrade to headers for a Buick 455, it's best to choose headers specifically designed for that engine to ensure proper fit and performance.
Headers designed for a 350 engine typically will not fit a 454 engine without modifications. The two engines have different dimensions and exhaust port configurations. While some aftermarket headers may be adaptable, it's essential to verify compatibility based on specific measurements and designs. Always consult manufacturer specifications or an expert for the best fit.
Adding headers and a cold air intake can typically increase horsepower by 10-30 hp, depending on the specific vehicle and other modifications. These upgrades can improve airflow into and out of the engine, allowing it to breathe more efficiently and produce more power. It is always recommended to combine these upgrades with a tune to fully optimize performance gains.
What engine and car they were designed to fit.
usually
For a 1972 Chevy Nova with a small block 350 engine, power steering, power brakes, and factory air conditioning, you would typically need shorty headers or specific mid-length headers designed for clearance. Brands like Hedman, Hooker, and Doug’s offer headers that accommodate these features without interfering with the AC or steering components. It's essential to ensure that the headers are compatible with the exhaust system you plan to use and check for any potential fitment issues specific to your setup. Always verify the specific model and year compatibility when purchasing headers.