Morning guys looks like Murry and I are back in the freezer were at -9*f.
Was thinking of changing the rear end gears in my Scamp from 4:10s to about 3:55s. Never built a rear end so not sure if I can do it or have someone that knows how set it up.
Not a pro but your new gear set should tell you + or minus on the pinion shim. Use paint or lay out dye to set back lash and check pinion depth. Always a new crush sleeve to set bearing preload
Have fun getting it to crush. Read the books take your time have fun