Edelbrock is rapidly expanding its Pro-Flo XT offerings with more choices Chevy small-block, big-block and LS1. These revolutionary EFI systems deliver more power, great looks and improved mileage potential.

Edelbrock has combined engineering and technology to bring consumers a more powerful, modern EFI system with user-friendly simplicity. The Pro-Flo XT electronic fuel injection system includes a new, more powerful ECU (computer) featuring fully sequential injection, exclusive handheld calibration module for tuning on the fly without the use of a laptop cpu, pre-defined calibrations and wideband O2 sensor compatibility. If laptop tuning is desired, the user can tune via laptop through the Pro-Flo XT software (included). Pro-Flo XT also receives a new modern intake manifold design packaged with a 90mm front-mount throttle body. Complete systems include ecu, wiring harness, handheld tuning module, all electronic sensors, fuel system components, intake manifold, injectors, fuel rails, throttle body and software. Applications now include small-block Chevy with standard and Vortec ports, big-block Chevy with oval-ports, and LS1.

Features Include:

  • All new modern design improves performance and mileage potential
  • Powerful flash-programmable ECU, by EFI Technology
  • Full sequential port injection
  • Pre-defined calibrations can be tuned through hand-held calibration module (or) custom tune with available software on user’s laptop computer
  • Modern intake manifold with 90mm throttle body for maximum performance
  • Narrowband sensor (included) and wideband O2 sensor compatible
  • Pro-Flo XT Chevrolet applications now include small-block, small-block Vortec, big-block oval port and LS1.
  • Retail priced from $3,399.95





Rat rodders, hot rodders, and purists alike will be challenged to resist Edelbrock’s latest editions to their timeless classic finned valve covers; Mopar owners now have three engine options and two different finishes to choose from.

Manufactured of heavy gauge, sand-cast aluminum, these are not the cheap knock-offs common in today’s market; they are Made in the USA for the best quality and appearance available. Edelbrock offers two finish options; a classic polished finish or with a modern textured black powder coating. The black coated option is machined on the fins and logo, yielding a machined aluminum contrast that really delivers a contemporary look. Get in line now and be the first in your car club to give your engine the Edelbrock black classic makeover.

Applications are available for Chrysler small-block (LA and Magnum), big-block (383/440). Complimentary Classic series breathers and air cleaners also available (sold separately).


Polished Finish

Black Finish

Small-block Chrysler (LA 318/340/360)



Small-block Chrysler (Magnum 5.2/5.9L)



Big-block Chrysler (383/440)



Features Include:

  • Quality sand-cast aluminum construction
  • Tight flange tolerance for optimum gasket retention and sealing
  • Optional polished or black powder coated finishes
  • Black Powder Coated with machined aluminum fins and Edelbrock logo
  • Matching polished and black Classic series breathers and air cleaners also available (sold separately)
  • Prices vary by application, check your local Edelbrock retailer for details.
  • Made in the USA




Royal Purple, the makers of that super-slippery line of lubes (including their Max Tuff engine assembly lube that I love so much) has added a line of high performance engine oil filtrs to their lineup.

The new high performance oil filters combine advance micro-glass technology  and high capacity with optimized flow characteristics for maximum performance and filter life.  Each Filter features: 100% synthetic micro-glass media for superior particle removal with 99% filtration efficiency;  a high performance silicone anti-drain back valve that prevents dry starts even in extreme conditions;  a heavy gauge steel back-plate for maximum burst strength; an extra heavy-duty nitrile-rubber base gasket with special lubricity compounds to reduce torque during installation and ensure a leak-free seal; and an ultra-strength filter housing that provides extra protection against puncture from road debris.  

According to their release, Royal Purple oil filters allow change intervals to be extended up to 12,000 miles. Vehicles still under warranty should follow the vehicle manufacturer’s recommended filter change intervals.  While Royal Purple filters are fully compatible with all synthetic and conventional oils, Royal Purple recommends using their high performance engine oil which also has a 12,000 mile life.

Royal Purple high performance filters are currently available exclusively at Pep Boys.  The filters will be available at other auto parts retailers this November, 2009.



MAHLE Clevite Inc. has announced the first phase of its new electronic catalog, called Launchpad. This is the first web-based catalog of its kind to include an electronic ordering function tied directly into customer accounts.

Launchpad allows users to search for any product within the MAHLE Clevite line and directly place an order for the product. The information on the online catalog is com[parable to what is found in MAHLE Clevite papaer catalogs, but is updated in real-time through electronic updates.

Phase one includes the gasket and piston product groups, with the remainder of the MAHLE Clevite product line to follow soon.

In this first phase, users are able to search light vehicle applications, utilize search wizard to look up products by year, make, model or engine. Users also can easily click on the details image or part number when viewing to see detailed images and specifications. Included is an interchange search. Users can add parts from the online catalog to MAHLE’s online ordering tool,

For more info, visit, or contact your shop’s MAHLE Clevite account manager.


by Mike Mavrigian


Because of our over-honed cylinder diameters (4.263″), standard size rings wouldn’t work, so I started with a set of Total Seal rings P/N CR7190 35, supplied with our Diamond pistons. These are intended for a bore diameter of 4.268″ (1/16″ top, 1/16″ 2nd, 3/16″ oil), requiring a custom file-fit.

In terms of top and second ring end gaps, Total Seal’s recommendations for a naturally aspirated engine is to achieve 0.0045″ of gap per inch of bore diameter for the top ring and 0.0035″ of gap per inch of bore for the second ring. 4.263″ x 0.0045″ = 0.01918″. I simply rounded off and file fit the top rings to achieve a gap of 0.020″. For the 2nd rings, 4.263″ x 0.0035″ = 0.01492″. I filed our second rings for a gap of 0.015″.



Using Summit’s adjustable ring seating tool, insert the ring into the bore and square the ring. The entire ring circumference must be equidistant from the top of the bore in order to obtain an accurate gap measurement.


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weineck2Hey, Germans just wanna have fun too. Jason Neugent of Brodix Cylinder Heads was kind enough to pass along this photo of of of their customers. The Cobra replica features a custom chassis and a Brodix aluminum 5″ bore space block and heads. The (can you say “big?”) 735 CID engine spits out a very nasty 1,100 HP. The car is street legal, and according to Jason, the owner “drives this on the autobahn like a wild man.” Das ist very cool.


This article provides insight regarding CNC machining of engine blocks. If you ever wondered about this technology, this article provides the answers.

CNC Machining Pt 1

CNC Machining Pt 2


Learn about CGI engine blocks for racing applications.




Our intrepid editor once experienced at least part of the infamous Baja 1000 offroad race. Read his comments in the Editor’s Blog “The Baja That Never Was.” And you think you’ve had a bad day?


Check out the latest and greatest in terms of engine components and machine shop supplies & tools.

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