4:10's Trap Speed

[Dan]

I have 410s with a 28" tall tire and shift at 7200 my speed before I need to change gears will be 153mph as of right now I am going threw the traps at 6500 @ 147 mph

speed world has all the info for you jeff


oh and Im running a C4
Dan

oh and my rear end makes no noise what so ever

[ASUSMC]

Even if they did make noise are you gonna hear them over open headers?

[Ethan@S3M]

I had motive 3.90's on my cobra and they didnt make noise. Its all in how you set them up.

[Lucafu1]

I have 410s with a 28" tall tire and shift at 7200 my speed before I need to change gears will be 153mph as of right now I am going threw the traps at 6500 @ 147 mph

speed world has all the info for you jeff


oh and Im running a C4
Dan

oh and my rear end makes no noise what so ever

That doesnt make any sense. to go that MPH you would need 31.2" of tire with 4.10s at 6500. its math, so it cant be wrong. unless you have non 1 to 1 third gear in your c4.

[Lucafu1]

heres a quick calculator for you guys that wanna play around. its a really good tool.

http://www.race-cars.net/calculators...alculator.html

or if you wanna do the math
MPH = TIRE RADIUS ÷ 168 x ENGINE RPM ÷ GEAR RATIO
RPM = 168 x GEAR RATIO x MPH ÷ TIRE RADIUS
GEAR RATIO = TIRE RADIUS x RPM ÷ 168 ÷ MPH
TIRE RADIUS = 168 x MPH x GEAR RATIO ÷ RPM

[ASUSMC]

Low PSI slicks will get taller the faster they spin because of the G-forces involved so maybe that is the difference????

[Lucafu1]

Low PSI slicks will get taller the faster they spin because of the G-forces involved so maybe that is the difference????

yes i know but a 28" tall tire is still the same tire. with centrifigual force it would have to grow over 3"? not registering in my head i guess.

[ASUSMC]

I'm sure it could at the correct PSI and I have no idea what PSI Dan is running so can't be sure.

[Viper_ed]

Just ask Lou, that is the combo he runs. I'd ask himm for you, but ummmmm, you know, he doesn't want to talk to me!

[Lucafu1]

it has more to do with the side wall of the slick then the psi since that is the part that will stretch and make the tire grow