Here are some pics of the old (defective) syncro blocker rings compared to the new ones. The old ones have a pebble like texture vs the slotted texture on the new ones. I tested them on the cones for friction/resistance to rotation and didn’t feel a measurable difference so hopefully there is a difference in real operation. I’m waiting on the bronze shift fork pads to wrap up the assembly.
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Will Rivera
'69 Firebird 400/461, 290+ E D-Ports, HR 230/236, 4l80E, 8.5 Rear, 3.55 gears
‘66 Lemans, 455, KRE D-Ports, TH350, 12 bolt 3.90 gears
'69 LeMans Vert, 350, #47 heads: work in progress
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