Piece Of The Puzzle: SPEC Introduces Flywheel For L83/Tremec Combo

Piece Of The Puzzle: SPEC Introduces Flywheel For L83/Tremec Combo

Motor swaps have long since been a rite of passage for almost any gear head. Updating to a modern motor can provide more than just performance gains. Weight savings, fuel efficiency, and passing emission scores are all great reasons too! While motor swaps are common, their complexity can cause challenges that most home mechanics would struggle with. The GM 5.3 liter L83 engine is no different, however, we are starting to see the L83 transition from its truck life to new hot rod homes.

GM L83

GM’s L83 engine is the latest generation superseding the Vortec engines commonly found in Silverado and Sierras. The newly designed mill hosts a series of modern designs including direct injection, cylinder deactivation, and variable valve timing.  While the engine can reach the 500-flywheel horsepower mark easily, the automatic transmission drivetrain loss and the overall size are more than some would like. Thankfully, SPEC Clutch has provided a way to limit that loss and add some third pedal fun!

Save The Manual Transmission

SPEC Clutch realizes our love of manual shifting and just released their new billet flywheel. The new flywheel adapts the GM L83 V8 to any TREMEC five- and six-speed transmission. The flywheel is offered in two different flavors: billet aluminum and billet steel.  The billet aluminum weighs in at a measly 12.3 lbs. The steel bumps that weight to 24 lbs. Sticking with simplicity, the flywheel accepts any LSx clutch made for flat surfaces.

Verdict

While this product might just seem like a small piece of the L83 swap-parts needed or just a simple flywheel adapter, it’s more than that. SPEC Clutch flywheels are a direct fit, SFI certified, and even include a race bolt kit. It allows you easily put a TREMEC transmission behind a modern GM L83 with no fabrication or machine shop’s service required! You might say, SPEC came in “clutch” with this product.

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About the author

James Elkins

Born into a household of motorsport lovers, James learned that wrenching takes priority over broken skin and damaged nerves. Passions include fixing previous owners’ mistakes, writing, and driving.
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