Jack,
As always thanks for the comments. Test & tune sessions for me have always been about getting some data in an effort to improve the mile performance. I have always wanted to get data and not break any parts, hence rolling out easy waiting for the clutch to engage before applying full throttle and lazy shifts. The 12 second quarter mile was a little exciting and I may try a little more aggressive driving without breaking parts.
I am limited to not much more than an 8" crankshaft pulley due to my water tank construction. The factory ribbed belt is 7.8" diameter with a 3" diameter blower pulley which gives me a 2.6:1 ratio. The blower spins at 16,640 rpm with a 6,400 engine rpm. I can find crankshaft pulleys for 8mm gearbelt pulleys (I would have to change to an aftermarket harmonic balancer) in that size however I cannot find a blower pulley small enough. The crankshaft pulley would need to be reduced in width and custom blower pulley created. The OEM blower pulleys are steel and pressed onto the shaft, no keys, pins or other driving components. Aftermarket pulleys use a press on hub that the pulleys are bolted to much like when using a GMC type blower.
There are two aftermarket systems that are too wide for my application that I may be able to modify. I plan to make some changes over the winter in preparation for next year, I just haven't decided which way to go.