Free technical tools, detailed guides, and an AI expert that knows vintage cars inside out. Built for enthusiasts who get their hands dirty.
Data-driven calculators based on factory specifications and engineering formulas.
Calculate ideal air-fuel ratio based on altitude, temperature, and engine specs. Baseline for jetting Weber, SU, Stromberg, Holley.
Try Tool →Enter transmission ratios, rear axle, tire size → get RPM vs. speed for each gear. Perfect for rear-end swaps and cruise RPM.
Try Tool →Compute static compression ratio from bore, stroke, head chamber volume, piston deck height. Includes vintage engine presets.
Try Tool →Ask anything about classic cars, vintage motorcycles, or restoration. Your AI expert with decades of mechanical knowledge.
Factory workshop manuals, SAE standards, and period-correct data — not internet hearsay.
No sponsors, no affiliate links. Recommendations are based on technical merit, not commissions.
Tools designed for those who rebuild, restore, and modify — not casual drivers.
Ask the Gearhead Assistant — it's like having a master mechanic in your pocket.
Ask the AI Expert