Originally Posted by andybyrd
Cheyfireball. your right and that makes a lot of difference between flywheel and rear wheel H/P. Thanks-Andy
dParker Thank you. and you are saying the same thing that a Man at the track told me. go with a 4.88 But I didnt want to sound stupid so I didnt ask [why go with a higher gear for 1/8 mile only] now this is where I get lost. and Now I'm gonna ask . would the 1/8 be like the 1/4 I've read where you want your trap RPM to be around 5% more than your engines highest H/P rpm I don't have my dyno sheet in front of me but lets say it is 665 h/p @ 6500 rpm . should I go through at 6800 to 7000. I'm shifting @ 7000 now. and when it shifts wow that thing just rockets down the track. I'm only going to be running 1/8 mile. this was a thought that I had. can you set up this car to run a better 1/4 mile time by putting in a 4.88 and @ the same time it will be quicker in the 1/8. Rather than just gearing it for the 1/8 only. set me straight here because I need to Learn these kinds of things. I'm 54 years old and youd think Id done learnt this but here I am. Thanks to all yall I might learn something- Andy Byrd
Andy I may look at bracketracing different than others. If your wanting to run the absolute best in the eighth run 6:50 gears and turn your motor 9000rpm. But we're bracket racing, so if I can run within a tenth of my fastest possible time and be easy on my engine thats what I'm looking for. Just a small compromise to keep my sh#t together. Your car probably won't run any faster with the 4:88 but it should be close and be easier on parts. Sometimes if you don't have a big cam and a low gear in your rearend you can run out of cam before you get to the finish line. If you have an engine that flattens out on rpm less than 7000rpm. Its a good idea to put a smaller gear in the rear end, kinda keeps you engine pulling hard all the way thru the quarter.