The OS 18 TZ has more HP then any other small block made.
http://www.osengines.com/reviews/osm...st-rcnitro.pdf

I have no idea how fast it goes but do know it is a hand full to handle.

I run the stock flywheel and the HPI race clutch with the Savage vented Race CB.

I am running the HPI header.
http://www2.towerhobbies.com/cgi-bin...?&I=LXFAZ9&P=M

Tuned pipe is an OS T-1040 R70.