You were absolutely correct Maurice. I ordered a set of Torx Plus bits from Lislie and they were a perfect fit. The new bolts have been installed at the correct 18 ft pounds of torque. There was no way those old bolts were torqued to 18 ft pounds! I've never heard of Torx plus before this. Thanks!Pursuit wrote: ↑Fri Nov 05, 2021 11:12 am Those Torx bolts look like they are the TORX-Plus design. The flutes of the bit are wider and will withstand more force being applied to them. GM uses a TORX-Plus bolt on their transmission bellhousings. I went through the same hassle you did. I kept twisting/breaking my regular Torx bit sets.
Maurice
John