New 6ul wheels and R888 tires helped some on the track. Changed my gears to 3:73 and went 13.1@108. Now I found an exhaust system blockage and when I opened up my cutouts on the dyno my rwhp went up to 375. Looking to jump into the 11's with all that new found hp. At the super chevy show with new mufflers I turned a 12.10 @ 117mph but still need good drag tires to hook up better.