Build, photos and text by Mike Mavrigian This build features a GM LS platform, bored and stroked to 408 CID, with a 4.0305” bore and 4.000” stroke. A few of the notable elements include adapting Gen 1 smallblock Chevy valve covers to LS heads and a conversion to carburetion, this time using a [...]
NEW TOOL REVIEW – TESTING SNAP-ON’S ELECTRONIC TORQUE/ANGLE WRENCH MODEL TESTED: MODEL ATECH3FR25O Snap On’s Tech Angle wrench includes a protective plastic case. The new wrench is available in several versions (1/4, 3/8 and 1/2-inch drive, Nm & angle, and Nm/ft-lb/in-lb & angle). The unit I tested is model ATECH3FR250A, which features [...]
Snap-On’s new Tech Angle wrench includes a protective case and is available in several versions, including 1/4″-drive, 3/8″-drive and 1/2″-drive. The digital torque wrench is capable of operating in several modes, including ft-lb, in-lb, Nm and angle of rotation. The unit I tested is ATECH3FR250A, which features 1/2″-drive. TESTING SNAP-ON’S NEW ELECTRONIC TORQUE/ANGLE [...]
Finally, a torque wrench designed for pros that combines torque-plus-angle capabilities in an easy-to-use package. Snap-on’s Heavy Duty TechAngle™ Torque and Angle Wrench (ATECH4R600) will change the way you torque. “The Snap-on Heavy Duty TechAngle™ Torque and Angle Wrench eliminates the need for angle gauges and protractors, providing the most accurate and efficient way [...]
Our build is done. See the end of this article for several tasty photos of the finished engine, followed by a complete list of the participating manufacturers. FINAL ASSEMBLY OF OUR NASTY LITTLE DART 427W OUR ONE TRICK PONY IS DONE. WE’RE READY FOR THE DYNO RUN. Engine build, text and photos by Mike [...]
by Mike Mavrigian Build/assembly and all photos by author Our Lunati roller cam features 0.544″ valve lift at intake and 0.560″ at exhaust, with duration of 232 intake and 242 exhaust. Centerline is 108 intake and 116 exhaust. CAMSHAFT AND TIMING Dart thoughtfully provided anti-friction-coated cam bearings with their block. Each bearing is [...]
Following years of extensive R&D, the engineering team at ARP® has developed a revolutionary new high performance fastener assembly lubricant that is superior to commonly used oil, moly and other lubes. ARP Ultra-Torque® allows builders to torque fasteners within 5% of their required preload on the first “pull,” virtually eliminating “preload scatter,” and ensures [...]
One of the newest releases from HP Books is High Performance Fasteners & Plumbing, written by Mike Mavrigian. This 170-page book provides detailed, yet easy-to-read technical information on understanding all types of performance fasteners (bolts, nuts, screws, rivets, clamps, etc.) and performance plumbing for fuel, brake, oil and coolant hose, fittings, tubes, etc.
PROJECT LS2, PART 4 This has proven to be a fairly easy build. The LS series-both Gen III and IV-shows definite promise. by Mike Mavrigian all photos by author Our LS is now ready for induction and ignition.At this point, our LS2 is a complete longblock. Here, we’ll cover a number of subjects leading up [...]
continued from Part 1 CYCLIC FATIGUE PROTECTION Whether measured by stretch or tightened by torque, rod bolts MUST be installed with the proper amount of preload (bolt stretch) in order to provide proper clamping force. If a rod bolt is installed without sufficient preload, every revolution of the crankshaft will cause a separation between the [...]
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