Car Build Journal

Every project car has a story. The late-night garage sessions, the parts you saved up for, the dyno pull that finally hit your target. A build journal captures that story — not just what you installed, but when, why, and what it cost. Boltfox gives you a structured build log that turns a pile of receipts into a timeline you can actually read.

Log each mod with the part name, category, cost, install date, and photos. Boltfox keeps a running all-in total so you always know what the car cost you — purchase price plus every dollar of parts. It's the number every gearhead wants to know and nobody wants to add up by hand.

Dyno sheets belong with your specs. Upload scans or photos of your dyno runs and attach them to your spec panel alongside horsepower, torque, 0-60, and quarter-mile times. When someone asks what it puts down, you have the graph to back it up — not a vague forum post from three years ago.

The before/after slider (Pro) shows your build progress in one drag. Upload a photo from the day you bought the car and one from today. Visitors to your public page can slide between stock and built and see exactly how far you've come. It's the most satisfying part of documenting a build.

When you're ready to flex, toggle your car public and share the link. Your public garage page shows your specs, build log, photo gallery, and all-in total — no login required for visitors. Post it on Instagram, drop it in a forum, send it to a buyer. It's your build, presented your way.

Your build log stays private until you decide otherwise. And your data is always yours — export the whole thing as JSON whenever you want. Start documenting your build today. Free for one car, no credit card.