Hollow Head (8/23/2008)
Ok, Ted. Off topic, what is your best run at quartermile? ET, 60 ft,330 ft, 660 ft, 990 ft and top speed? Our best was that yfreak57's 16,658 seconds, 2,675 7,121 10,516 13,791 and a bit over 80 miles per hour top speed.To date with the Y in the roadster, the best times are:
60’ 1.278
330’ 3.827
660’ 6.021 @ 111.06 mph
1000’ 7.953
¼ mile 9.614 @ 135.42 mph
Just keep in mind that war was declared on the Roadster’s weight and as such, the finished weight has been trimmed to bare minimum. Even the shifter knob is hollowed out. As an FYI, when I increased the lift on the camshaft from 0.537” to 0.595” with a subtle increase in duration at 0.050” and a ½ point increase in the compression ratio, I picked up almost two tenths in quarter mile et while the eighth mile times all basically stayed the same. This engine is still normally aspirated with a vacuum secondary carb and no power adders.
Hollow Head (8/23/2008)
Feeling was that it pulls quite hard between 60ft to 660 ft but then the shift to second gear destroyes the whole thing...Perhaps you’re running out of camshaft? Or you’re shifting at too low an rpm and falling below the torque band? I'm shifting at no lower than 6700 rpms to insure that the rpm falls back to the peak torque rpm of the engine. With a two speed automatic, that becomes critical.
Lorena, Texas (South of Waco)