4 speed tranny stuff for the V8 and high HP /6 crowd, Pictures |
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4 speed tranny stuff for the V8 and high HP /6 crowd, Pictures |
Dr Evil |
Feb 25 2008, 05:53 PM
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#1
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Send me your transmission! Group: Members Posts: 22,995 Joined: 21-November 03 From: Loveland, OH 45140 Member No.: 1,372 Region Association: MidAtlantic Region |
Here is the latest gearbox I am building for someone. It is an F-N-X-HBf box and I wanted to show how easy it is to lock out 1st in a 4 speed box. I have heard that there are people that charge a chunk of change to do the same thing....I think that is wrong as it is way easy. All you need is a rear gasket, tubing cutter and a section of 3/8" copper tubing (1/2" shown as I bought the wrong size).
Here is the FNXHBf stack (Ooo, purdy). Here is the shift rod end for 1st that needs the sleeve to lock it out. I removed 1st gear completely other than the gear on the input shaft as you need it for reverse. And here is the section of ~2" copper tubing. You need to keep the slider for revers. It looks like the sleeve will hit the slider, but it is just the angle of the pic. |
Dr. Roger |
Feb 26 2008, 02:38 AM
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#2
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A bat out of hell. Group: Members Posts: 3,944 Joined: 31-January 05 From: Hercules, California Member No.: 3,533 Region Association: Northern California |
I think mine is a (1st gear delete) tight 1st, second, and third group. Then 4th is a big jump, a flipped H for freeway cruising.
Running errands has never been more fun. (IMG:style_emoticons/default/aktion035.gif) Dr. Evil, I really like your ratio charts. Is there a way to tell what gears I have by rotating the input shaft and counting rotations of the output shaft? or visa-versa? I'm curious what my 2 backup trans axles are running. |
Dr Evil |
Feb 26 2008, 08:23 AM
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#3
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Send me your transmission! Group: Members Posts: 22,995 Joined: 21-November 03 From: Loveland, OH 45140 Member No.: 1,372 Region Association: MidAtlantic Region |
I think mine is a (1st gear delete) tight 1st, second, and third group. Then 4th is a big jump, a flipped H for freeway cruising. Running errands has never been more fun. (IMG:style_emoticons/default/aktion035.gif) Dr. Evil, I really like your ratio charts. Is there a way to tell what gears I have by rotating the input shaft and counting rotations of the output shaft? or visa-versa? I'm curious what my 2 backup trans axles are running. I would imagine so. The ratio of turns of the input shaft to turns of the output flange will give you a ball park of what you have. I have never tried it, but it may be quite accurate. Give it a shot and post your results and we can figure it out. the chart that I am using is from Carquips web site. I down loaded it and then I plug in the gears and save the chart. Any combos you want ot see, just let me know and I will post it. You like the short 1-2-3 and a long drop to 4th? I was under the impression that with the F-N-X-HBf that it would be smoother as the shifting is the same from gear to gear. If the preference is for the shorter 1-3 then I should let my customer know so I can see if he still wants to buy the X gear from me to make the pattern I felt was best. |
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