The final build is shown here. Part 1 of the series provides an overview of the build, with more details to come as we progress with the article series. Build, text and photos by Mike Mavrigian (all machining by Koffel’s Place) This is Part 1 of a series involving the build of a [...]
Project Engine Builds
Build, text and photos by Mike Mavrigian This final article installment covers the completion of the 408 LS build, along with the engine dyno results. Our radical-looking baby pulled a respectable 670.5 HP at 6500 rpm and 581/7 lb-ft of torque at 4900 rpm.
Build, text and photos by Mike Mavrigian Part 3 of the 408 LS series continues the build, discussing areas including sensors, oil pump, cylinder heads, valvetrain, front cover, water pump and crank damper installations. In Part 4 of the series, we’ll conclude assembly and provide a peak at our dyno [...]
Build, text and photos by Mike Mavrigian BLOCK PLUGS Using all new GM plugs, I installed the four threaded water jacket and oil plugs on the outside of the block (three steel 16mm plugs and one brass 30mm plug). These plugs feature straight metric threads. No NPT threads exist on the OE block. [...]
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 [...]
By Mike Mavrigian We finally had a chance to run the Pontiac 501 on dyno. Following are the results. We ran the engine at Ross Racing Engine’s new Superflow SF-902 engine dynamometer in late May, 2012 (Ross is located in Niles, OH, about 62 miles east of my facility).
THE FINAL ASSEMBLY by Mike Mavrigian Our intent with this build is to illustrate how you can take advantage of current LS (mechanical) technology, and still create a somewhat old school traditional appearance, grabbing in the range of 450 HP, all without breaking the bank. In terms of exterior finish, we intentionally “relaxed” [...]
Build, text and photos by Mike Mavrigian The Pontiac 455, bored/stroked to 501 CID, is finally completed. This article covers all remaining aspects of the assembly. Next is the dyno run, which I’ll cover in an upcoming article.
The Pontiac is being completed today, getting ready for display. . Both current project engines, including the “Retro” LS engine and the Pontiac 455 will be on display at the upcoming Hot Rod & Restoration show in Indianapolis. This year’s show is held at the Lucas Stadium complex, adjacent to the Indianapolis Convention Center, March [...]
Build, text and photos by Mike Mavrigian Note: This engine, as well as all of our engine projects, is designed, test-fit and assembled by Mike Mavrigian’s Birchwood Automotive facility in Creston, OH. Now that the block, oil pan, valley cover plate and timing cover have been painted, we can begin final assembly. [...]