What torque should I use on the driveshaft flange bolts?
Documented on the 1965 Ford Mustang build
Published June 20, 2026
Torque specs vary by bolt size and grade.
Full Answer
Torque specs vary by bolt size and grade. Use the torque value supplied by the driveshaft manufacturer or typical flange bolt specs for classic Mustangs (consult factory manual). If unsure, use a conservative spec and re-check after a short test drive.
Documented In This Build
Related Knowledge
Do I need new U-joints when installing an aluminum driveshaft?Will an aluminum driveshaft cause vibration?Do I need to shorten or modify the driveshaft for my '65 Mustang?Is an aluminum driveshaft safe for a high-power street or race car?What safety steps should I take before starting?How should I protect and organize the new wiring?Can I keep the original radio and still add Bluetooth?Can I use an F100 driveshaft in my '65 Mustang?
Related Parts
Aluminum driveshaft (one-piece or two-piece depending on model)
$900
Universal joint kit (U-joints) - rear & front if required
$60
Driveshaft flange bolts / hardware kit
$20
Related Tools
Torque wrench (ft-lb)
Floor jack
Socket set and ratchet / breaker bar
Pry bar / flatbar
Safety glasses and gloves
Marking tool (paint or scribe)
Jack stands (pair)
