Tech Help
Gen II LT1 & LT4 Torque Specs Chart – Corvette, Camaro, Firebird, Impala SS, Fleetwood, Caprice & Roadmaster
Under-the-hood torque specs chart for 1992–1997 Gen II LT1 and LT4 engines. Covers Corvette, Camaro, Firebird, Impala SS, Fleetwood, Caprice, and Roadmaster.
🧼 How to Clean Your Engine Compartment (Safely and Effectively)
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Want to give your engine bay a showroom-worthy shine? Whether you're prepping for a car show, getting ready to sell, or just keeping things tidy under the hood, this step-by-step guide covers everything you need to clean your engine compartment safely — no matter what you drive.
Inside the 1984–1988 Corvette 4+3 Overdrive Transmission
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Discover the inner workings of the C4 Corvette’s unique 4+3 transmission. Learn common failure points, maintenance tips, and upgrades to keep your car shifting strong.
Built to Last: Protecting Your Optispark from Premature Failure
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Your LT1 or LT4’s Optispark distributor is built for longevity — but even the best parts can’t survive engine neglect. Learn why oil leaks, cooling system issues, and plug wire problems are often behind premature Optispark failures, and discover simple tips that can help your new distributor last 100K miles or more.
Optispark FAQ
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The Petris Optispark, built by Throwback Automotive, is not a rebranded distributor—it’s a high-quality, precision-assembled solution perfected over three decades. In this post, we break down common Optispark failure points and explain what sets ours apart.