Best DR for 4.30 gears?

M

mattsstang87

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Aug 27, 2004

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"In a VAN...down by the River!" WV

Feb 17, 2006

#1

• Feb 17, 2006

• #1

My new engine will make peak power somewhere between 6800-7200rpm. I am running 4.30 gears. Which DR should I use? The MT 275/40/17 (26"), or the M&H 275/50/17 (28")?

 

Rick 91GT

Mustang Master

Nov 29, 1999

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PA

Feb 17, 2006

#2

• Feb 17, 2006

• #2

If you want to trap that kind of rpm you could most likely use the 26" tire. Is this an auto or a stick car?

How fast do you think it wil go this will also effect it?

For instance we use a 26" tire with a 4:56 gear and shift at 7900, trap over 7000 at 127mph.

 

25thmustang

Mustang Master

Sep 5, 2003

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Feb 17, 2006

#3

• Feb 17, 2006

• #3

Id say 26". You have a lot of RPM to play with there. My dads car runs out of steam right over 6000 and he runs a 26" tire with a 4.30 gear! Also the shorter tire will fit no problem, the taller might be tight, or might require some work to get it in there!

 

M

mattsstang87

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Aug 27, 2004

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"In a VAN...down by the River!" WV

Feb 17, 2006

#4

• Feb 17, 2006

• #4

It is a stick, and I plan on shifting at 7200-7500rpm. How fast???? Check my site to see the mods.

 

bluevenom867

I will have images of molesting stuffed animals in

Dec 15, 2003

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St.Petersburg,FL

Feb 17, 2006

#5

• Feb 17, 2006

• #5

mattsstang87 said:

It is a stick, and I plan on shifting at 7200-7500rpm. How fast???? Check my site to see the mods.

Click to expand...

Looks like you got some power there,might even need a 28" tire,if it was an auto I would say you would have to run the 28".

Do you run the nitrous all the time at the track?

The taller tires will have a better roll-out and should pick up your 60ft more on the nitrous.

 

M

mattsstang87

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Aug 27, 2004

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"In a VAN...down by the River!" WV

Feb 17, 2006

#6

• Feb 17, 2006

• #6

bluevenom867 said:

Looks like you got some power there,might even need a 28" tire,if it was an auto I would say you would have to run the 28".

Do you run the nitrous all the time at the track?

The taller tires will have a better roll-out and should pick up your 60ft more on the nitrous.

Click to expand...

Have yet to run the nitrous or the new engine at the track. If the 28s would fit and look okay, I might go with them.

 

I

IntenseBlue

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Jul 10, 2005

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Feb 17, 2006

#7

• Feb 17, 2006

• #7

You're gonna need the 28s.