3103-277 – Transmission Yokes – 1310 Series – 26 / 27 X 1.176 Splines – 1.500″ Hub Dia

The 3103-277 fills a dimensional gap between the standard 5.469" TH350 yoke and the long-slip race unit at 8.000". Its 6.750" center-to-end suits modified GM street builds where the transmission has been repositioned rearward, or where a custom crossmember moves the T/C mounting point and changes the required driveshaft engagement distance.

• 26/27-spline x 1.176" PD -- standard GM TH350/TH700 output shaft; interchangeable with other yokes in this spline class
• 1.500" hub OD -- standard TH350 tailshaft seal bore; verify seal condition and replace if worn
• No counterbore -- flat-face seating only; check seal housing face for nicks or burrs before installation
• 6.750" C-to-end -- measure existing yoke or calculate from T/C output to rear axle CL before ordering
• Pairs with transmission yoke upgrades for complete drivetrain overhauls

Tip: when replacing a transmission yoke on a GM street car, note the index mark alignment of the existing yoke relative to the output shaft spline. Reinstall the new yoke at the same index to preserve the original balance phase. Although the spline-to-spline fit allows installation at any rotational position, maintaining the original phasing minimizes any residual first-order imbalance contribution from the driveshaft assembly.