Index Racing (Engine Build and Tips/Tricks)
Been index racing for over ten years now ( 11.50 ) and love it ! and prefer it to regular bracket racing. We run on a 5/10s pro tree. My combos have been small blocks in the 525 hp range running in the 10.80-11.00 range depending which motor I have in my Dart is 3150 lbs. with me in it. I am killing about half a second most of the time. You have to be able to run two to three 10s quicker than the index. Just going the index ( 11.50 for example ) isn't enough as most of the competitors are all slowed down and can adjust for weather and track conditions. My car leaves hard and I am foot braking my mph isn't the best but my car is very competitive and I have done pretty well. I have tried the Willys adjustable plate system as well as the E.Z. plate and found that they killed to much mph and went back to my bolt system a modified Moroso stop that bolts to the rear carb stud. I simply turn the bolt out or in to adjust how fast or slow I want set up for. I am currently working on a different type of throttle stop : I purchased a Biondo electric throttle stop since its electric function isn't legal as per the rules here I removed the solenoid and added a spring to operate the function the solenoid used to I like it because it also has a scale and a knob both with increments for accurate settings I haven't tried it yet though.
Been index racing for over ten years now ( 11.50 ) and love it ! and prefer it to regular bracket racing. We run on a 5/10s pro tree. My combos have been small blocks in the 525 hp range running in the 10.80-11.00 range depending which motor I have in my Dart is 3150 lbs. with me in it. I am killing about half a second most of the time. You have to be able to run two to three 10s quicker than the index. Just going the index ( 11.50 for example ) isn't enough as most of the competitors are all slowed down and can adjust for weather and track conditions. My car leaves hard and I am foot braking my mph isn't the best but my car is very competitive and I have done pretty well. I have tried the Willys adjustable plate system as well as the E.Z. plate and found that they killed to much mph and went back to my bolt system a modified Moroso stop that bolts to the rear carb stud. I simply turn the bolt out or in to adjust how fast or slow I want set up for. I am currently working on a different type of throttle stop : I purchased a Biondo electric throttle stop since its electric function isn't legal as per the rules here I removed the solenoid and added a spring to operate the function the solenoid used to I like it because it also has a scale and a knob both with increments for accurate settings I haven't tried it yet though.