The pins breaking is caused by launching.

 

Im not familiar with gearing, what does 4.28 gearing mean?

 

Ok its been a month now any word?

 

I read somewhere else he was weeks away, I'll let Buschur Racing give the official word though.

 

I've found one thread that says it's 4.6 something... how much better fuel/top end would a 4.28 do I wonder?

 

I'm pretty sure it's 4.28... I have one on order . 4.28 will trap around 135 in 4th at ~8000RPM. I have no desire to find the top end of 5th in this car with any ratio.

With taller gears, you might be able to cruise a bit faster and get the same MPG. If you're looking into this to save gas money though, stop reading right now. You will never make back even a fraction of what this upgrade will cost.

The concern with going any taller than 4.28 is that if you have an upgraded turbo, you'll need to downshift to accelerate from a normal cruise speed or else will get surge/etc.

 

I talked to Shep and he said they had a limited number of these set ups as feelers to gauge interest, it's going to be like 1600.00 for the taller set up and 150.00 if you need the pin set that has been breaking on some of the X's.

 

I wasn't actually looking to cruise any faster... it's 55 mph speed limit where I am so I don't cruise much over 60-62.

 

Deal, $1600.00 i'm ready!

 

email him and get it done!

 

4.28 first gear
1st Gear
RPM MPH
2500 15.7
2600 16.3
2700 16.9
2800 17.5
2900 18.2
3000 18.8
3100 19.4
3200 20.0
3300 20.7
3400 21.3
3500 21.9
3600 22.6
3700 23.2
3800 23.8
3900 24.4
4000 25.1
4100 25.7
4200 26.3
4300 26.9
4400 27.6
4500 28.2
4600 28.8
4700 29.4
4800 30.1
4900 30.7
5000 31.3
5100 31.9
5200 32.6
5300 33.2
5400 33.8
5500 34.5
5600 35.1
5700 35.7
5800 36.3
5900 37.0
6000 37.6
6100 38.2
6200 38.8
6300 39.5
6400 40.1
6500 40.7
6600 41.3
6700 42.0
6800 42.6
6900 43.2
7000 43.8
7100 44.5
7200 45.1
7300 45.7
7400 46.4
7500 47.0
7600 47.6
7700 48.2
7780 48.7
7900 49.5
8000 50.1
8100 50.7
8200 51.4
8300 52.0
8400 52.6
8500 53.2

 

4.28 second gear
2nd Gear
RPM MPH
2500 22.9
2600 23.9
2700 24.8
2800 25.7
2900 26.6
3000 27.5
3100 28.5
3200 29.4
3300 30.3
3400 31.2
3500 32.1
3600 33.0
3700 34.0
3800 34.9
3900 35.8
4000 36.7
4100 37.6
4200 38.5
4300 39.5
4400 40.4
4500 41.3
4600 42.2
4700 43.1
4800 44.1
4900 45.0
5000 45.9
5100 46.8
5200 47.7
5300 48.6
5400 49.6
5500 50.5
5600 51.4
5700 52.3
5800 53.2
5900 54.1
6000 55.1
6100 56.0
6200 56.9
6300 57.8
6400 58.7
6500 59.7
6600 60.6
6700 61.5
6800 62.4
6900 63.3
7000 64.2
7100 65.2
7200 66.1
7300 67.0
7400 67.9
7500 68.8
7600 69.7
7700 70.7
7780 71.4
7900 72.5
8000 73.4
8100 74.3
8200 75.3
8300 76.2
8400 77.1
8500 78.0

 

4.28 third gear
3rd Gear
RPM MPH
2500 31.0
2600 32.2
2700 33.5
2800 34.7
2900 35.9
3000 37.2
3100 38.4
3200 39.7
3300 40.9
3400 42.1
3500 43.4
3600 44.6
3700 45.9
3800 47.1
3900 48.3
4000 49.6
4100 50.8
4200 52.1
4300 53.3
4400 54.5
4500 55.8
4600 57.0
4700 58.2
4800 59.5
4900 60.7
5000 62.0
5100 63.2
5200 64.4
5300 65.7
5400 66.9
5500 68.2
5600 69.4
5700 70.6
5800 71.9
5900 73.1
6000 74.4
6100 75.6
6200 76.8
6300 78.1
6400 79.3
6500 80.6
6600 81.8
6700 83.0
6800 84.3
6900 85.5
7000 86.8
7100 88.0
7200 89.2
7300 90.5
7400 91.7
7500 93.0
7600 94.2
7700 95.4
7780 96.4
7900 97.9
8000 99.1
8100 100.4
8200 101.6
8300 102.9
8400 104.1
8500 105.3

 

4.28 4th gear
4th Gear
RPM MPH
2500 40.8
2600 42.5
2700 44.1
2800 45.7
2900 47.4
3000 49.0
3100 50.6
3200 52.3
3300 53.9
3400 55.5
3500 57.1
3600 58.8
3700 60.4
3800 62.0
3900 63.7
4000 65.3
4100 66.9
4200 68.6
4300 70.2
4400 71.8
4500 73.5
4600 75.1
4700 76.7
4800 78.4
4900 80.0
5000 81.6
5100 83.3
5200 84.9
5300 86.5
5400 88.2
5500 89.8
5600 91.4
5700 93.1
5800 94.7
5900 96.3
6000 98.0
6100 99.6
6200 101.2
6300 102.9
6400 104.5
6500 106.1
6600 107.8
6700 109.4
6800 111.0
6900 112.7
7000 114.3
7100 115.9
7200 117.6
7300 119.2
7400 120.8
7500 122.5
7600 124.1
7700 125.7
7780 127.0
7900 129.0
8000 130.6
8100 132.3
8200 133.9
8300 135.5
8400 137.2
8500 138.8

 

4.28 FDR 5th gear
5th Gear
RPM MPH
2500 58.8
2600 61.1
2700 63.5
2800 65.8
2900 68.2
3000 70.5
3100 72.9
3200 75.3
3300 77.6
3400 80.0
3500 82.3
3600 84.7
3700 87.0
3800 89.4
3900 91.7
4000 94.1
4100 96.4
4200 98.8
4300 101.1
4400 103.5
4500 105.8
4600 108.2
4700 110.5
4800 112.9
4900 115.2
5000 117.6
5100 119.9
5200 122.3
5300 124.6
5400 127.0
5500 129.3
5600 131.7
5700 134.0
5800 136.4
5900 138.7
6000 141.1
6100 143.5
6200 145.8
6300 148.2
6400 150.5
6500 152.9
6600 155.2
6700 157.6
6800 159.9
6900 162.3
7000 164.6
7100 167.0
7200 169.3
7300 171.7
7400 174.0
7500 176.4
7600 178.7
7700 181.1
7780 183.0
7900 185.8
8000 188.1
8100 190.5
8200 192.8
8300 195.2
8400 197.5
8500 199.9