Join Date: May 2009
Location: Nowhere, Special
I ran the same setup for 4 years, stock engine with simple bolt-ons, stock suspension with lowering springs and Tokiko blue shocks, an 8 point cage, Cobra brakes, 17" street tires.
I found that I had no issues with putting the power down on a 160k mile stock engine, I filled up every time just outside of the track and ran through fuel during the day, filling with fuel jugs if I got to below 1/4 tank. My lap times were very consistent and didn't change much at all with fuel load. I believe the weight distribution kinda offset the weight difference. I read somewhere and I can't remember if it was MM (probably in a set of instructions that came with all of the stuff I'm still installing right now but can't seem to find it) or Griggs that said they preffered a full tank of fuel due to the weight distribution.
I really think your driving style and your car's setup will determine what is best for you. When I get back out there in a few weeks, I'm gonna do what I always did which is start full and go from there, maybe something will change for me with my new engine/suspension setup, maybe not.