New Ferrari 365 GT 2+2 Differential Repair Technical Manual 

• factory technical booklet is dedicated exclusively to the assembly, adjustment, and specifications of the differential crown wheel and pinion unit for the Ferrari 365 GT 2+2. Commonly referred to as the “Queen Mother,” this elegant grand tourer was produced between 1967 and 1971 and featured the Tipo 245 engine with a 5-speed manual transmission and a rear-mounted limited-slip differential.

  Contents & Features:

  • Detailed technical specifications for crown wheel and pinion gears, including gear ratio tolerances and backlash settings

  • Factory torque values and fitment procedures for internal differential components

  • Step-by-step assembly and disassembly instructions with references to proprietary tools used at the time by Ferrari service technicians

  • Multiple technical diagrams (exploded views) showing the correct orientation, shimming, and alignment of the differential internals

  • Original Italian-language text, professionally printed by Ferrari’s technical division in the late 1960s

  • No publication or catalogue number appears on the document, suggesting it may have been an internal-use-only or limited-distribution workshop manual supplement

  This booklet is an invaluable reference for restoration specialists, and marque historians seeking period-correct assembly procedures or to verify differential originality in concours-level vehicles. Its technical detail far exceeds what is typically found in standard owner's manuals or even dealer parts catalogues.