[rick978]

we are running 456 now but are putting in 488 curious to see if 513 will do better we have a set of those too . with the 456 gear and a 30 x 9.50 hoosier and a c4 we run best 12.9 but mostly a 13.0 13.1 the 12.9 was an a hot day and with cool night air 16 psi in the tires . keep posting your progress its nice to share info we are also changing inj to 24 lbs and a pro meter maf /70mm fisrts then hopefully before the track shuts down we will try the 488s also trying a set of mickey drag rads 28 inch .too will post results