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E21 (1975 - 1983)

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  #1  
Old 09-15-2013, 08:36 AM
Gruppe Zwei Gruppe Zwei is offline
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Location: Denmark
 
Join Date: Sep 2013
Posts: 5
Mein Auto: E21 320-6
E21 rear diff ratio

Cheers

I was wondering if anyone knows if there are any other ratios available for the E21. Is it possible to use a E30 pumpkin for instance ?

I have the 3,64 ratio, and i know that the only other option to get some longer gears and the revs down in 5th gear is to get the 3,45 ratio from the E21 323i.

But is it possible to use any other diffs ?

-Ruben
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  #2  
Old 10-24-2013, 07:31 AM
dups dups is offline
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Location: gainesville, fl.
 
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Posts: 4
Mein Auto: jade green 77 320i
Re: E21 rear diff ratio

From what they said over at bimmer forum...without a mod your options are e21 and e21. So nope.

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  #3  
Old 01-11-2014, 12:25 PM
wgf3 wgf3 is offline
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Location: north carolina
 
Join Date: Jan 2010
Posts: 17
Mein Auto: '04 5451, '03 M3, '88 M6,
rear ends

I have several that I would part with. All built up to 75% LS with 3.9, 4;10, and 4.22 gear ratios. PM me for more info- also I don't come to this forum much so I may take a day or two to reply.
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  #4  
Old 01-11-2014, 06:10 PM
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Hermes Hermes is offline
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Location: Wal die Scheide (SD)
 
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Mein Auto: ist Imolarot
Quote:
Originally Posted by wgf3 View Post
I have several that I would part with. All built up to 75% LS with 3.9, 4;10, and 4.22 gear ratios. PM me for more info- also I don't come to this forum much so I may take a day or two to reply.
He wants a taller diff, not shorter
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  #5  
Old 01-19-2014, 09:43 AM
loki1120 loki1120 is offline
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Location: MD
 
Join Date: Oct 2013
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Mein Auto: 83 320i (everyday)
3.45 are the tallest common gears I've come across and from what I've heard an E30 rearend doesn't just bolt in to the e21 but anything is possible
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