Methodology guide
Margin math, dressed weight, and stand vs hoist.
Calculator
Engine stand capacity calculator
Enter engine pounds and extras still attached. Get the smallest 750, 1,300, or 1,500 lb class or NO_MATCH with a 1.25 safety margin.
Result
Required capacity ≈ (engine_lb + extras_lb) × 1.25. Classes: 750 · 1,300 · 1,500 lb. Worked check: 400 + 0 → 500 → 750 lb class.
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