[firechickenman]

I've got a 3/8" open spacer under the carb and that is all that will fit with my air cleaner. I ran it once without the air cleaner and surprisingly it lost ET and mph. A/F ratio (surprisingly) didn't change noticeably. I thought about finding a different air cleaner that would allow a 1" spacer.

The 15% slippage was with my old Freakshow 9 1/2" that flashed to 4700 and would only drop 500 rpm on the shifts. My current converter is a 10" Continental reworked by Lenny at Ultimate Converter concepts. It was built for my current combo. I haven't ran it through the 1/4 yet but it drops 1000 rpm on the shifts and dropped my 1/8 trap rpm. I'm sure it will really help me on the upper end.

I do have a set of 4.10 gears but I really want to keep the 3.73's. It makes the 250-350 mile drives between tracks on Drag Week a whole lot more bearable.

Caltrac bars are in the lower hole. I had them in the upper hole before and didn't notice any change in 60' when I moved them to the lower hole but it did decrease the amount of separation in the rear on launch. I'll see if I can check the pinion angle. Isn't about 4 deg. down relative to the driveshaft a good starting point for a leafspring/Caltrac setup?