having a debate with a fellow. He thinks a 10.5 car does not need a rear gear change to run 1/8 then to turn around and run 1/4. If its geared perfectly to run 1/8 mile and goes through at its peak RPM in the 1/8 wouldn't it way over rev in the 1/4. Or if it was gear for 1/4 mile and hit peak rpm at the 1/4 mile stripe would it run through the 1/8 below peak rpm and therfor be slower (lazy) and be down on peak rpm and ET? Bottom line can you be totally efficient and run top ET running the same rear gear for 1/8 to 1/4??