 Taller fifth gear, Substituting a flipped HB gear in fifth |
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| bluhun |
 Feb 24 2013, 04:52 AM
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Member  Group: Members Posts: 91 Joined: 23-January 06 From: San Rafael, CA Member No.: 5,464 Region Association: Northern California  |
At the Bay Area meet last week, one owner who is planning a 3.2 liter six conversion also talked about substituting a flipped HB (19:31) gear in fifth in place of the standard ZD (31:22) in order to lower engine revs at highway cruising speed and increase fuel economy. Does anyone have any experience with this transmission modification?
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| shoguneagle |
Feb 24 2013, 01:02 PM
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shoguneagle Group: Members Posts: 1,180 Joined: 3-January 03 From: CA, OR, AZ (CAZOR); New Mexico Member No.: 84 Region Association: Northern California |
There also threads via research which does discuss and gives a variety of gearing information including several gearing charts. Doc should be able to provide source/thread information.
Had Doc rebuild my 901 trans with: 1st-A; 2nd-F; 3rd-O; 4th-X; 5th-Flipped H. Although I have had very highway time on the 3.2/trans conversion, it appears to perform very well for the street.. The fifth gear appears to hold 70mph at approximately 2500-2700rpm. The total trans meets my needs and approval. The final ratio 0.59:1.00) (may have this reversed). The HB Flip is a higher ratio but is the alternate for the flipped H; it will meet most needs for highway travel and lower rpm. The other gears are some what short in the lower end but the 3rd and 4th match to the flipped gears and does meet my needs. Again, Doc can provide additional info. Steve |
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Posts in this topic
bluhun Taller fifth gear Feb 24 2013, 04:52 AM
Luke M Dr. Evil would be the guy to answer this question.... Feb 24 2013, 08:59 AM Mark Henry Talk to Dr. Evil
I'm doing the same I thing H ... Feb 24 2013, 09:36 AM RonW thats an interesting idea, i hadn't heard of t... Feb 24 2013, 09:44 AM partwerks I think it was an H gear that was used in mine. An... Feb 24 2013, 09:59 AM toon1
I think it was an H gear that was used in mine. A... Feb 24 2013, 10:16 AM kg6dxn I had an H gear with my V8 and Turbo rotary.
With... Feb 24 2013, 10:24 AM Mark Henry I guess it's HA and HB, mine is the HB which i... Feb 24 2013, 10:29 AM toon1
I guess it's HA and HB, I think mine might be... Feb 24 2013, 11:25 AM
Mark Henry
[quote name='Mark Henry' post='1825319' date='Feb... Feb 24 2013, 12:46 PM RonW this is a site i look up gearing
http://www.blues... Feb 24 2013, 12:56 PM |
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