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Vivid Racing Gear 
Howards Cams 4.125" Bore Flat Top Pistons for Chevrolet LS
When it comes to performance enhancements for your Chevrolet LS engine, the Howards Cams 4.125" Bore Flat Top Pistons are a game changer. Designed specifically for LS Gen III engines with 15-degree heads (like the LS1, LS2, LS3, LS6, and L92), these pistons are engineered to withstand the extreme demands of racing while delivering impressive power and reliability.
Key Features
- 2618-T61 Aluminum Forgings: Crafted from high-strength 2618-T61 aluminum, these pistons are built to handle the rigors of high-performance racing.
- Less than 1% Silicon Content: This low silicon content ensures durability and reduces brittleness, making them perfect for extreme conditions.
- Oversized Valve Pockets: Designed to accommodate larger cam profiles and oversized valves, ensuring optimal airflow.
- Accumulator Grooves: These grooves improve ring seal, enhancing engine efficiency.
- Lightweight Aircraft Quality Wrist Pins: Included in the set, these wrist pins contribute to reduced overall weight without compromising strength.
- CNC Turned Skirts: The precision machining allows for smooth operation even under severe conditions.
- Radius Valve Reliefs: Designed to eliminate sharp edges and reduce hot spots, promoting longevity.
- Forced Pin Oilers: Ensuring proper lubrication and cooling during operation.
- Lock Removal Indents: Standard feature for ease of assembly and maintenance.
- Double Spirolox: Provides secure retention of the wrist pin.
Specifications
- Part Type: Pistons
- Model: ProMax 2618 Forged Race Pistons
- Application: Chevrolet LS Gen III with 15 Degree Heads (LS1/2/3/6 & L92)
- Piston Style: Inverted Dome Top
- Cylinder Bore: 4.125"
- Compression Distance: 1.110"
- Crankshaft Stroke/Rod Length: 4.125" with 6.125" Connecting Rod (441ci)
- Deck Height (Zero Deck): 9.240"
- Dome Volume: -26cc
- Compression Ratio: 4.125" Stroke with 66cc Heads: 9.9; 4.125" Stroke with 70cc Heads: 9.6
- Piston Material: Forged 2618-T61 Billet Aluminum Bar Stock
- Wrist Pins Included: Floating
- Wrist Pin Size: 0.927"
- Pin Lock Included: Double Spirolox
- Ring Grove Sizes: 1.5mm, 1.5mm, 3.0mm
- Manufacturer: Howards Cams Racing Components
- Manufacturer's Part Number: 831204126
- Weight: 14.0 lbs.
- Warranty: Race Application, No warranty expressed or implied
- Quantity: Sold as Sets of 8
Popular Fitments
- Chevrolet Corvette (C5, C6)
- Chevrolet Silverado 1500 (2007-2013)
- Chevrolet Camaro (2010-2015)
- Chevrolet Tahoe (2007-2014)
Customer Reviews
Many customers praise the Howards Cams 4.125" Bore Flat Top Pistons for their exceptional performance and durability. Users have noted significant improvements in engine responsiveness and power output, especially in high RPM situations. The precision engineering and quality materials have made these pistons a favorite among racing enthusiasts and mechanics alike.
Upgrade your Chevrolet LS engine with the Howards Cams 4.125" Bore Flat Top Pistons and experience the difference in performance and reliability!
⚠ WARNING:
Cancer and Reproductive Harm
https://www.P65Warnings.ca.gov
Howards Cams is an aftermarket company that Howards Johansen founded in 1945. It started as Howards Power & Racing Equipment and specialized in manufacturing high-performance racing cams for the automotive market. Even after turning the business over their oldest son, the company remained one of the best cam manufacturers in the industry.
Maximizing Their Racing ExperienceThe company has always used it is on-track experience to create powerful cam profile designs. It is why they have become one of the favorite brands of many top fuel dragster racers and drivers from other racing disciplines such as road racing, mudd bogging, marine racing, and circle track racing.
Advanced Manufacturing TechniqueHowards Cams uses the most advanced computer design software to create the most competitive product out there. They offer a wide range of performance parts from camshafts, connecting rods, crankshafts, billet main caps, and forged pistons. All of these are made in the USA to ensure consistent quality.
Purchase Howards Cams Products At Vivid RacingIf you are in the market for high-performance parts for your engine, then look no further as Howard Cams is the brand for you. They have all the parts you need to create a fast machine and is trusted by many racers and enthusiast worldwide. If being on the top podium is your dream, then upgrade your engine with Howard Cams parts.
To know more about the company, visit Vivid Racing and check out their list of products that fit your specific needs.
| Sale price | None |
| Wholesale price | $127.62 |
| Shipping |
Weight: 14.00 Length: ? Width: ? Height: ? |
| Product Added At | Monday 13 May, 2024 |
| Product Modified At | Friday 27 June, 2025 |
| Imported By | ETLOverride |
| Last Edited By | vendordata@vividracing.com |
| View In Admin |
| Carb Approved | No |
|---|---|
| Carb Number | - |
| Epa Status | - |
| Prop65 | - |
| Carb Required | - |
| Vendor | Inv | Cost | Retail | Jobber | MAP | Core | Updated | |||
|---|---|---|---|---|---|---|---|---|---|---|
| Howards Cams | $108.15 | $162.23 | $154.50 | ? | ? | 2025-06-27 06:05:00 |
