SBC 383 EAGLE ROTATING ASSY 4.030 MAHLE F-TOP PISTONS H-BEAM 1PC

SBC 383 EAGLE ROTATING ASSY 4.030 MAHLE F-TOP PISTONS H-BEAM 1PC
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  • Item #: WPM3831PC-4030425F05

SMALL BLOCK CHEVY 383 cu in

Complete Balanced Rotating Assembly

For 1pc rear main seal - 4.030 BORE

(2 piece also available, see our other listings)


This Kit Includes:

MAHLE Forged Pistons and pins with locks 4.030 bore

NASCAR MAHLE photo MAHLE_Motorsports_KV2_zpsd730e5bd.jpg

MAHLE Motorsports North America established in 2000 has positioned itself as a leading supplier of forged racing pistons and rings. Widely recognized as the technology leader amongst race teams in most every top race series in North America and abroad, winning races and championships around the world, MAHLE Motorsports North America brings cutting edge technology to sportsman and professional racers alike with the flexibility and foresight to meet a wide range of customer needs which has the discerning racer relying on MAHLE to get them to the winner’s circle.

MAHLE RA H-BEAM 383-5 photo MAH_383_RA_5_zpseadd798a.jpgMAHLE RA H-BEAM 383-7 photo MAH_383_RA_7_zps8347a267.jpg

Nothing supports the MAHLE Group's technology leadership as strongly as our achievements supplying the motorsports/racing industry including Formula 1 seasons with 16 out of 18 race wins supporting six of the ten teams, nearly two decades of straight wins at Le Mans, championships in all three top levels of NASCAR® and he majority engine supplier to the Indy Car Series.

However, product development for race engines results in more than just sporting achievements. It is often the top technology used by MAHLE in today's motorsports products that end up in tomorrow's production automotive models. Transversely, MAHLE’s involvement in a wide array of OE production programs that include extensive R&D testing covering many aspects other than peak power and strength can provide technology from a different point of view that can be incorporated into motorsports products. A 24hr Grand Prix race is a severe test stand as you can imagine as is an industrial engine producing 1500+ cylinder pressures 24 hours a day 7 days a week for months on end. In providing products that succeed in any environment, allows MAHLE to master the everyday requirements from public roads to the most grueling motorsports competitions.


The Power Pak pistons are predominately made from 4032 aluminum alloy to allow for tighter cylinder to wall clearances, and improved temperature stability. Some applications require 2618 alloy including the Power Pak Plus category. Each kit is complete with a set of high performance rings, containing a low drag 1.5mm, 1.5mm, 3.0mm set.

MAHLE POWER PAK

MAHLE Power Pak Metric Ring Package is a perfect replacement for the stock or medium performance build up. This is the same ring pack used in Circle Track, Dirt Track and High-Horsepower racing engines. Featuring moly ductile iron top rings, cast iron reverse taper second rings and 3 piece oil control rings. MAHLE ring sets feature standard ring end gaps for easy installation. Ring Specifications: Pre fit 1.5mm, 1.5mm, 3mm oil ring.

King Racing Rod and Main Bearings

King Bearings feature a "Bulls Eye" Tolerance:

Bull's Eye Tolerance

Bull’s Eye Tolerance Improves Consistency

Bull’s Eye Tolerance

“Bull’s Eye Tolerance” is how we refer to King’s ultra-tight control of wall thickness tolerance.

Inconsistent shell-to-shell bearing wall thickness can have a negative impact on clearances between the bearing and the journal on main and connecting rod bearings. Engine builders typically find themselves having to compensate for these inconsistencies.

But King has removed the inconsistency factor by using advanced quality control procedures. Utilizing these statistical control methods, we are able to maintain rod and main bearing wall thickness tolerances at an amazingly tight 0.00010". This is far tighter than other manufacturers, who produce bearings with a wall thickness at the crown that can vary by up to 0.00025".

Bull’s Eye Dimensions

There are many benefits to "Bull's Eye" control of wall thickness tolerance:

  • Improved consistency of bearing-to-journal clearance, so you never have to worry about King bearings having the right fit within a set.
  • Superior eccentricity and crush relief values for a better oil "wedge" and less journal wear.
  • Decreased taper across the bearing face, yielding superior wall stability, a more parallel wall and better oil film development.
  • No need to grind cranks "fat" or "thin" to compensate for bearing wall variations.

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5.7" H-Beam rods with rod bolts cut to clear cam

H-Beam photo H-Beam_zps7ed1a27c.jpgH-Beam_4 photo H-Beam_4_zpsa2238c58.jpg

H-Beam_2 photo H-Beam_2_zpse33307fc.jpg

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WE CAN ALSO INSTALL THE RODS ONTO THE PISTONS FOR A $40.00 UPGRADE. JUST CHECK THE BOX ABOVE THE 'ADD TO CART' BUTTON AND TYPE 'YES' IN THE BOX AT THE BOTTOM OF THE PAGE.

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PC 5.7 BUSHED RODS, (full floating) 4340 CHROMOLY STEEL, WITH 7/16 CAP SCREWS, BRONZE BUSHINGS IN THE SMALL END.

These Rods are tested with all surfaces shot peened and and stress relieved.
Perfect for SB engines producing up to 700hp, and BB engines up to 850hp.

THESE RODS WILL EASILY HANDLE 600 HP, AND ARE STROKER CLEARANCED.

Balanced 3.750 inch stroke Eagle crankshaft

 

Balancer and Flex Plate included

 


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This kit is balanced on our Hines computer balancer by a machinist with over 20 years experience. We have used this kit in 500 hp street engines and circle track engines.

This item will ship with the best shipping company covering your area. We will choose this carrier based on cost and reliability. It is our priority to make sure you get what you need.

**NOTE: Shipping prices listed are for the contiguous 48 US states only. There may be additional postage required to ship items to Alaska, Hawaii, Puerto Rico and other US territories. If additional postage is required, we will contact you through Email messages to let you know. If you live outside of the contiguous US, please request a shipping quote prior to purchase to avoid any delays in shipping your item.

We have been in business for over 30 years building some of the fastest race engines in the southeast with the best parts around. We are excited to now offer these parts to you at affordable prices. Our machinists are the best in the business and our sales staff is friendly and knowledgeable. Please give us a call with any questions about our items, we will be happy to talk to you about your project:

423-288-3881

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