Shifting that LENCO "backwards". You launch with all levers forward running on "ratios", then pull longlever on the right incrementally to the next shorter lever from right (passenger side) working to the left "to the driver". LENCOs are configured to stack ratios in reverse order and each "next gear" is cumulitave. In other words. All the cases are in "ratio" (planetaries spinning"), and at launch, you pull the front case from ratio (planetary spinning" to 1:1 (direct drive) into the next case that is in "ratio" (planets spinning) then you grab the next lever into "direct drive" and so on until you have shifted each case into direct drive, so that final shift has the entire stack in "direct" 1:1 final through the traps. And the ratios of each case are set so that as you shift the first case, then next case gearing is calculated with first case in direct, all remaining cases are in "ratio" (spinning the planets). You multiply the ratios of each case from front to rear. So, with a 4 speed (three cases) first gear you multiply the ratios of all three cases for actual 1st gear driven ratio, then second gear you multiply the remaining two cases for the actual second gear ratio, and the third gear is simply the ratio of the final case, and when that lever is pulled into final drive, you now are total 1:1 direct drive of all cases (4th) gear. As CLeetus and Co. are running the McFlurry, the LENCO is being shifted in the "wrong order" (rear case, then case in front etc. it should be front case shift first, then the next case working backwards etc.) So, the ratio stacking is wrong order. The LENCO still shifts and moves, but the torque multiplication is not optimal. It's not "complicated" it is like algebra. Order of operations matters. Still nice to see them running it. (no hate on Cleetus and them, he and his folks do a lot of stuff, and the amount of distraction, keeping up with all of it is a challenge)
The 67 OLDS is a factory block. Edlelbrock aluminum heads and intake. Hyd Roller Cam. He is still running Q JET.
