Download Repair Manual For the efi
https://cdn.shopify.com/s/files/1/0826/8080/7721/files/40-efi-diagnostics-and-repair-manual.pdf?v=1792698759

Download Torque Specs and additional specs here
https://cdn.shopify.com/s/files/1/0826/8080/7721/files/vanguard-repair-manual.pdf?v=1792698760
Component Factory torque
Cylinder head 350 in-lb
Connecting rod 125 in-lb
Crankcase cover 200 in-lb
Flywheel 150 ft-lb
Intake manifold 180 in-lb
Exhaust manifold 200 in-lb
Rocker arm lock nut 70 in-lb
Rocker arm stud 100 in-lb
Valve cover 70 in-lb
Spark plug 180 in-lb