 what gears best for v8, h for 5th but what about 3rd and 4th ?? |
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| jimkelly |
 Apr 3 2010, 03:17 PM
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#1
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Delaware USA  Group: Members Posts: 4,969 Joined: 5-August 04 From: Delaware, USA Member No.: 2,460 Region Association: MidAtlantic Region  |
since v8's don't use 1st, and second is not interchangeable.
what is the latest thinking on the best gears for 3,4,5 ?? stock is ok - but @ 3000-3500 rpms at @ 65 mph - really sucks the gas : (( jim |
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| ArtechnikA |
Apr 4 2010, 12:45 PM
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#2
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rich herzog Group: Members Posts: 7,390 Joined: 4-April 03 From: Salted Roads, PA Member No.: 513 Region Association: None |
here: Charlie White's Gear Page is a chart of all the ratios for all the boxes.
H is nominally a 3rd gear that can be flipped (drive gear becomes driven gear) so 19:32 becomes 32:19. H is actually the shortest 3rd which means it becomes the tallest top when flipped - unless you want to get into the 2nd (E, F, and G-series) gears. But those are really rare (motorsports) items since interchangeable 2nds means a 904 mainshaft (bring $$$). You could consider flipping a first gearset but the tallest of those (D) is 16:35 which would be 35:16 flipped and REALLY tall - like Diesel territory... (if the stock /4 ZD top is ~.7 a flipped D would be .45...) H really is about as good as it gets in a 901 box... You can look around for a GB set but it'd be quite the coup to snag one... |
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Posts in this topic
jimkelly what gears best for v8 Apr 3 2010, 03:17 PM
ArtechnikA
since v8's don't use 1st, and second is n... Apr 3 2010, 03:28 PM realred914 replace 5th with new gear,. move 5th to 4th, 4th t... Apr 3 2010, 03:52 PM J P Stein I have a GA set in the shop. It's F/S ( 400buc... Apr 3 2010, 03:53 PM Mark Henry I have a gear set that I'm about to toss up fo... Apr 3 2010, 04:49 PM
realred914
I have a gear set that I'm about to toss up f... Apr 3 2010, 04:59 PM
streetrover In the midst of a 215 v8 conversion and those soun... Apr 4 2010, 11:25 AM jimkelly http://forums.pelicanparts.com/porsche-911...calcu... Apr 3 2010, 05:34 PM computers4kids Jim,
When I rebuilt my 901 at DR. Evils So. clinic... Apr 3 2010, 09:20 PM kg6dxn The PO of my car re-geared my trannny. Not sure wh... Apr 3 2010, 10:02 PM JRust I did the same as Mark. I ust replaced my 5th with... Apr 3 2010, 10:04 PM Dr Evil Jeez! $400 for a GA set? I wish I could g... Apr 4 2010, 01:20 AM ArtechnikA
Jeez! $400 for a GA set? I wish I could ... Apr 4 2010, 06:24 AM Dr Evil When I said /6 I meant 911/6. So, a 911 901 box. G... Apr 4 2010, 08:27 AM realred914
here: Charlie White's Gear Page is a chart of... Apr 4 2010, 01:32 PM ArtechnikA
so is the H gear simply the third gear turned bac... Apr 4 2010, 01:41 PM realred914
so is the H gear simply the third gear turned ba... Apr 4 2010, 01:51 PM ArtechnikA
...That is a four speed tranny right? any partic... Apr 4 2010, 02:01 PM |
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