You already know we’ve chosen the powerful and compact LS3 for this build, but which LS3? We went right to the top and got the LS376/525 crate engine. It’s the most powerful production-based crate engine in the Chevrolet Performance portfolio: 6.2 liters, 525 horsepower at 6,300 rpm and 489 ft.-lbs. of torque at 4,400 rpm.
In part one of Project Thunderbolt, we laid out the plans to stuff a GM LS3 V8 in to a 2004 Mazdaspeed Miata. In this update we’re finishing the teardown of our 2004 Mazdaspeed Miata’s chassis. We’ll do the same to our stock Miata four-cylinder drivetrain by breaking it down into smaller, more manageable pieces.
[portfolio_slideshow id=38154] Light car + big engine = silly go-fast fun. Back in the 1940s and ‘50s it was Ford flathead, Olds, and Caddy V8s in Model As. Pontiac stuffed a 389 in a mid-size Tempest and ushered in the musclecar era with the 1964 GTO. Carroll Shelby’s 427-powered Cobras terrorized the competition (and probably
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