Ross Racing Engines’ Tony Lombardi cut the valve reliefs using an end mill and his adjustable piston vise. Build, text and photos by Mike Mavrigian The Pontiac bigblock build (starting with a 455 block and boring/stroking to 501 CID) is progressing. I apologize for the time delay, but this build has been [...]
Build, text and photos by Mike Mavrigian . I realize it’s been a while since my last posting of this project’s Part 1 article, but I’ve been tied up with multiple projects at the same time. Since the Part 1 article, I’ve obtained the crankshaft, had the heads finish-machined and assembled [...]
WE BEGIN THE BUILD OF A BORED STROKED PONTIAC 455 TO OBTAIN 501 CID AND ABOUT 600 PONIES. THE GOAL:TO CREATE AN IDEAL “INDIAN” POWERPLANT FOR STREET, STRIP AND STREET RODDER APPLICATIONS Prior to block machining, the block exterior was smoothed and detailed. Not only will this ressurected Pontiac provide some ground-pounding thump, but it’ll [...]
For 2011, I’ve decided to produce two new engine projects, each of which will provide handy and informative tips for our readers. Naturally, each build will be presented in our normal manner…as a multi-part series of technical articles. The new projects for this year include a Pontiac 455 and a “Budget LS” build.
THE DYNO RUN Build, text and photos by Mike Mavrigian . Well, we finally ran this engine on dyno. The dyno location was Platinum Engine Designs in Norwich, Ohio, a clean-as-a-whistle top-notch race engine shop in southeast Ohio, equipped with a late-model SuperFlow engine dyno.
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 [...]
Our injectors are from Bosch (P/N 0280 156 127). These are the taller LS1 style at about 2.917″ tall. An intake manifold that is designed for LS2 injectors features a larger diameter injector port as compared to an LS1 manifold, so if you plan to run LS1 style injectors in an LS2 manifold, you’ll need [...]
CARB WITH DISTRIBUTOR, NO COILPACKS The next carb-type setup involves the same intake manifold and carburetor, but with a twist-get rid of the eight individual coilpacks and mount a distributor at the front of the engine. GM Performance offers a distributor adapter kit (P/N 88958679) that includes a cast aluminum LS front distributor drive cover [...]
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