Help a drag racer out!

06VistaBlueGT · April 6th, 2009, 10:26 AM

Is there a calculator out there that will help calculate what size tires are ideal for 1/4 mile? I can get a dyno sheet, trans ratios and rear gear ratio. This is for a friend I race with. Thanks for any help.

HMUSN · April 6th, 2009, 10:27 AM

What size tires you need depend on your set up. gears, suspension, transmission, ect..

06VistaBlueGT · April 6th, 2009, 10:44 AM

Originally Posted by HMUSN

What size tires you need depend on your set up. gears, suspension, transmission, ect..

Yeah, I have all that info. I just need a formula to plug all the info into.

Basically, he has 406 BHP, he wants to pass through the traps at 5800 RPM, he has 4.10 gears and a turbo 350 with stock ratios. I would have to look up the RPM's that the engine hits max HP and TQ.

M L Struck · April 6th, 2009, 10:53 AM

Moroso makes a sliding scale called a speed calculator. I think it will do what you want I can get back to you on it tonight or you can order one from summit.
Moroso 89650 - Moroso Power-Speed Calculators

06VistaBlueGT · April 6th, 2009, 11:21 AM

Originally Posted by M L Struck

Moroso makes a sliding scale called a speed calculator. I think it will do what you want I can get back to you on it tonight or you can order one from summit.
Moroso 89650 - Moroso Power-Speed Calculators

Awesome! That might do what he needs. Too bad we didn't know about this yesterday, we were at Summit Racing, we could have picked one up!

BlackedOut04GT · April 6th, 2009, 11:31 AM

I think I might order one today as well.

April 6th, 2009, 10:26 AM	#1
06VistaBlueGT Enthusiast 2006 Mustang GT 12.76@105 Join Date: Jan 2007 Location: Stark County, Ohio Posts: 869 iTrader: 0 reviews	Help a drag racer out! Is there a calculator out there that will help calculate what size tires are ideal for 1/4 mile? I can get a dyno sheet, trans ratios and rear gear ratio. This is for a friend I race with. Thanks for any help.

April 6th, 2009, 10:27 AM	#2
HMUSN Doc 1986 SVO Join Date: Nov 2006 Posts: 36,836 iTrader: 9 reviews	What size tires you need depend on your set up. gears, suspension, transmission, ect.. __________________

April 6th, 2009, 11:31 AM	#6
BlackedOut04GT Hardcore Enthusiast 2004 Mustang GT 14.21@97.93 2.107 60' (Best pass. So far.) Join Date: Sep 2008 Location: Maynard, MA. Posts: 1,776 iTrader: 0 reviews	I think I might order one today as well. __________________ Black Stang Crew #007 Car Built By Me and CraigsList.com Mods: MGW, Bassani Catted X, Flowmaster's, Accufab 70MM TB, Stack Racing Plenum + spacer, JLT CAI, Diablo Tune, Slotted rotors + ceramic pads. More to come! I hope.

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April 6th, 2009, 10:53 AM	#4
M L Struck Hardcore Enthusiast 85 GT/86 SVO/2010 GT500 Join Date: Oct 2008 Location: Rossville IN Posts: 1,183 iTrader: 0 reviews	Moroso makes a sliding scale called a speed calculator. I think it will do what you want I can get back to you on it tonight or you can order one from summit. Moroso 89650 - Moroso Power-Speed Calculators

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