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Need an idea of where I will run out of gear in 4th

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Old May 10, 2010 | 04:43 PM
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Default Need an idea of where I will run out of gear in 4th

24.5 slicks, 98 USDM ITR tranny. I have rev limit at 8500 but could probably go higher with my built head. I tried calculators and wondered if anyone has real world experience with this set up
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Old May 10, 2010 | 04:45 PM
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Default Re: Need an idea of where I will run out of gear in 4th

I have the same setup you should run out of gear around 130 in 4tg
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Old May 10, 2010 | 04:55 PM
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Default Re: Need an idea of where I will run out of gear in 4th

looks like I need to rev it higher then
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Old May 10, 2010 | 05:00 PM
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Default Re: Need an idea of where I will run out of gear in 4th

www.teammfactory.com has a gear calculator for this.
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Old May 10, 2010 | 05:16 PM
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Default Re: Need an idea of where I will run out of gear in 4th

130 sounds about right w/ 24.5...rev it to around 9200 and you should be fine!
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Old May 10, 2010 | 05:41 PM
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Default Re: Need an idea of where I will run out of gear in 4th

This is the one I use

http://www.fatboyraceworks.com/gears/
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Old May 10, 2010 | 05:43 PM
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Default Re: Need an idea of where I will run out of gear in 4th

Originally Posted by pepeb18c
130 sounds about right w/ 24.5...rev it to around 9200 and you should be fine!
I really didnt want to rev it that high. Maybe Ill keep it in low boost till 3rd so I cover more track and can still make 10 second passes
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Old May 10, 2010 | 10:00 PM
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Default Re: Need an idea of where I will run out of gear in 4th

I dont see why if ur head is built 9200 shouldnt be an issue, but another thing u can do is up ur tire size nxt time u buy some to 25x9 M&H
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Old May 11, 2010 | 03:35 AM
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Default Re: Need an idea of where I will run out of gear in 4th

Don't be afraid of 9K!
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Old May 11, 2010 | 04:44 AM
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Default Re: Need an idea of where I will run out of gear in 4th

Originally Posted by 92redhatch
I have the same setup you should run out of gear around 130 in 4tg
same here!
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Old May 11, 2010 | 05:39 AM
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Default Re: Need an idea of where I will run out of gear in 4th

Assuming i have the right gear ratios (1.107 & 4.4??), you should theoretically get 127.3 mph at 8500, and 134.8 mph at 9k, obviously this can vary slightly based on actual circumference of the slicks.
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Old May 11, 2010 | 05:45 AM
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Default Re: Need an idea of where I will run out of gear in 4th

Originally Posted by inspector01
Assuming i have the right gear ratios (1.107 & 4.4??), you should theoretically get 127.3 mph at 8500, and 134.8 mph at 9k, obviously this can vary slightly based on actual circumference of the slicks.
At this point I think I need a GSR or LS tranny. The car should trap high in the 130's or low 140's
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Old May 16, 2010 | 02:42 PM
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Default Re: Need an idea of where I will run out of gear in 4th

just do a gsr 4th gear.. or rev the thing out, wheres your dyno graph or what are you carrying power to?
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Old May 16, 2010 | 03:09 PM
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Default Re: Need an idea of where I will run out of gear in 4th

i ran 137mph with a stock type r tranny with 9200 limit i still hit the limit tho so i would go a little higher more like 9600
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Old May 17, 2010 | 12:00 AM
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Default Re: Need an idea of where I will run out of gear in 4th

Originally Posted by EARLdaSQUIRREL
just do a gsr 4th gear.. or rev the thing out, wheres your dyno graph or what are you carrying power to?
well the dyno I reved it to 8500 it carried power to redline
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Old May 17, 2010 | 03:32 AM
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Default Re: Need an idea of where I will run out of gear in 4th

Just rev it higher! Don't be skurred!
If it was still climbing at 8500, I'd bet it will still climb to 9000+.
Stock "R" cams, right?
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Old May 17, 2010 | 04:18 AM
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Default Re: Need an idea of where I will run out of gear in 4th

Lets go to 10K!

And your cars going to trap 144-146mph!
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Old May 17, 2010 | 09:53 AM
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Default Re: Need an idea of where I will run out of gear in 4th

High 120's possibly 130
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Old May 17, 2010 | 11:52 AM
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Default Re: Need an idea of where I will run out of gear in 4th

I'm thinking about doing a LS 3rd and 4th right now if I can get a for sure it will work.
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Old May 17, 2010 | 02:50 PM
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Default Re: Need an idea of where I will run out of gear in 4th

All b series gears are interchangeable, The differences are the Final drives/Counter shafts
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Old May 17, 2010 | 05:13 PM
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Default Re: Need an idea of where I will run out of gear in 4th

Originally Posted by DeLucia
All b series gears are interchangeable, The differences are the Final drives/Counter shafts
That is something I need to think about then. Maybe keep the ITR FD and diff and use a LS 3rd and 4th.
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Old May 17, 2010 | 08:39 PM
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Default Re: Need an idea of where I will run out of gear in 4th

Your going to hate that LS gearing... Your 2-3 will drop hard and your 3-4 will prob be at 1000'.... I ran LS gearing with your power and a much higher redline and it still sucked.
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Old May 17, 2010 | 09:00 PM
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Default Re: Need an idea of where I will run out of gear in 4th

whats the hp numbers?
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Old May 18, 2010 | 03:08 AM
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Default Re: Need an idea of where I will run out of gear in 4th

Originally Posted by UJLSMoFo
whats the hp numbers?
583whp / 380tq
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Old May 18, 2010 | 03:34 AM
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Default Re: Need an idea of where I will run out of gear in 4th

if your scared to rev over 9200 u need to go to another sport.
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