The forging design produces a stronger piston than most standard pistons for the ultimate in performance. All Howards HRC Racing Pistons are forged from 2618 billet bar stock and then heat treated and aged to a T61 condition (2618-T61). This material has less than 1% silicon particulate content. High silicon content pistons (forged from 4032 or MS75) will not stand up to the most extreme stress placed on many racing pistons. Simply stated, adding sand to the aluminum only makes it more brittle. Another advantage of 2618-T61 over the high silicon pistons is the ability to keep its shape under extreme pressure and high RPMs. "Skirt Shrinking" is not a problem with Howards HRC Racing Pistons. All HRC pistons are machined on the most modern CNC equipment in the industry. The design of the CNC-turned skirts allows these pistons to work properly under intense heat and severe side loads without scuffing or splitting the cylinder walls. Dome pistons are designed with radiused domes, eliminating sharp edges and "hot spots". The valve pockets are built to handle large cam profiles and oversize valves. Forced pin oilers, accumulator grooves, and lock removal indents are standard. Sets include lightweight .150" wall, heat-treated aircraft-quality wrist pins. Double spirolox is standard.
Features:
- Forged from 2618-T61 Billet Aluminum Bar Stock
- Oversize Valve Pockets
- Accumulator Grooves for Improved Ring Seal
- Machined Oil Drain Back Holes
- Lightweight Aircraft Quality Wrist Pins Included
- Lock Removal Indents
- CNC Turned Skirts
- Radius Valve Reliefs
- 1/16", 1/16", 3/16" Ring Grooves
- Forced Pin Oilers
- Honed Pin Bores
- Double Spirolox
- Part Type: Pistons
- Model: ProMax 2618 Forged Race Pistons
- Application: Chevrolet Big Block V8
- Piston Style: Open Chamber Small Dome with 2 Valve Reliefs
- Cylinder Bore: 4.600"
- Compression Distance: 1.245"
- Deck Height (Zero Deck): 9.780" (4.500" Bore, 6.700" Rod = 10.200" Deck)
- Dome Volume: 10cc
- Crankshaft Stroke/Rod Length: 4.000" with 6.535" Connecting Rod (532ci)
- Compression Ratio: 4.000" Stroke w/ 119cc Heads: 10.0
- Crankshaft Stroke/Rod Length: 4.500" with 6.700" Connecting Rod (598ci)
- Compression Ratio: 4.500" Stroke w/ 119cc Heads: 11.2
- Piston Material: Forged 2618-T6 Aluminum
- Intake Valve Relief Depth: .294"
- Intake Valve Relief Diameter: 2.300"
- Exhaust Valve Relief Depth: NA
- Exhaust Valve Relief Diameter: NA
- Accumulator Groves: Yes
- Forced Pin Oilers: Yes
- Gas Ports: No
- Skirt Coating: CNC Turned Skirts
- Lock Removal Indents: Yes
- Average Piston Weight: 593
- Wrist Pin Style: Press-Fit or Floating
- Wrist Pins Included: .150" Heat Treated Air Craft Quality Steel
- Wrist Pin Size: .990 x 2.750"
- Average Wrist Pin Weight: 141
- Pin Lock Included: Double Spirolox
- Ring Grove Sizes: 1/16", 1/16", 3/16"
- Piston Rings Included: No
- Manufacturer: Howards Cams & Racing Components
- Warranty: Race Application, No warranty expressed or implied
- Quantity: Sold as Sets of 8
⚠ 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.
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