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The Pontiac 400 engine has long been a favorite among car enthusiasts for its power and performance. However, achieving optimal horsepower can sometimes be a challenge. In this article, I will share my experience with a $1,200 Summit Racing kit that successfully boosted my Pontiac 400 to an impressive 350 horsepower.
The Pontiac 400 Engine Overview
The Pontiac 400 was produced from 1967 to 1979 and is known for its robust design and strong performance. It features a cast-iron block and heads, which contribute to its durability. The engine is a part of the Pontiac V8 family and has a displacement of 400 cubic inches, making it an excellent choice for those looking to enhance their vehicle’s performance.
The Summit Racing Kit
After researching various performance kits, I decided to invest in a Summit Racing kit priced at $1,200. This kit is designed to provide a significant horsepower increase while being compatible with the Pontiac 400 engine. The kit includes a variety of components that work together to enhance engine performance.
Main Components of the Kit
- High-performance intake manifold
- Upgraded carburetor
- Performance camshaft
- Headers for improved exhaust flow
- High-flow air filter
Each of these components plays a crucial role in increasing the engine’s horsepower. The intake manifold and carburetor work together to ensure the engine receives an optimal air-fuel mixture, while the camshaft enhances the timing of the engine’s valves. The headers improve exhaust flow, which is essential for maximizing performance.
Installation Process
The installation of the Summit Racing kit was straightforward, especially with the help of a friend who had experience working on engines. It took us a weekend to complete the installation, and we followed the instructions provided in the kit carefully.
Step-by-Step Installation
- Remove the old intake manifold and carburetor.
- Install the new high-performance intake manifold.
- Attach the upgraded carburetor to the manifold.
- Replace the camshaft with the performance camshaft.
- Install the new headers and connect the exhaust system.
- Replace the air filter with the high-flow version.
Throughout the installation, we encountered a few minor challenges, such as fitting the headers in tight spaces, but nothing that a little patience and creativity couldn’t solve. Once everything was in place, we double-checked all connections and ensured everything was secure.
Testing the Results
After completing the installation, it was time to see how well the Summit Racing kit performed. I took my Pontiac 400 to a local dyno to measure the horsepower output. I was excited to see if the investment would pay off.
Dyno Results
The results were impressive. The dyno showed that my Pontiac 400 now produced 350 horsepower, a significant increase from the previous output. This boost in power transformed the driving experience, making the car much more responsive and enjoyable to drive.
Driving Experience
With the new horsepower, the Pontiac 400 felt alive on the road. Acceleration was noticeably quicker, and the engine responded well to throttle inputs. I took the car for a spin on both city streets and highways, and the performance was exhilarating.
Improved Handling and Performance
- Quicker acceleration from a standstill.
- Improved passing power on highways.
- Smoother power delivery throughout the RPM range.
Not only did the power increase enhance acceleration, but it also improved the overall driving experience. The car felt more stable and responsive, making it a joy to drive in various conditions.
Conclusion
Investing in the $1,200 Summit Racing kit was a game-changer for my Pontiac 400. The significant increase to 350 horsepower transformed the car’s performance and driving experience. If you’re considering upgrading your Pontiac 400, I highly recommend this kit for its quality components and impressive results.
Final Thoughts
Whether you’re a seasoned car enthusiast or a newcomer to the world of performance upgrades, the Summit Racing kit offers a reliable way to enhance your Pontiac 400. With proper installation and tuning, the results can be remarkable, making your driving experience more enjoyable and powerful.