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  #1  
Old 11-25-2006, 08:32 PM
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rear end ideas

This rear end came out of 83 300sd, there are part numbers on it. I'm trying to find the ratio? My current 240d 4spd has stock rear end, which I would also be wondering is 3:69?...Here is the numbers if anyone can help...thnx (1153513208)-and-(1233510101)
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  #2  
Old 11-25-2006, 08:49 PM
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think its 3.08 in the sd.. def 3.69 in the 4spd.. man, rear ends are great.
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  #3  
Old 11-25-2006, 08:52 PM
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Wouldn't that be so much better? Oh I hope because then I'm doin good right?
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Old 11-25-2006, 09:05 PM
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was exploring this avenue before..
but have been convinced that the 3.08 is too big for the 4spd n/a 616.

it is the 3.46 rear from the automatic n/a 123chassis that are the easter egg.
the 2.47 most definitely is the desirable turbo route.
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  #5  
Old 11-25-2006, 09:08 PM
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Whoa, I have 617.952 4spd, so this rear end would be awesome correct, at least better on the interstate. If so I'm on my way to swap like 2sec from the garage and its on...Thnx for the replys I hoping this will calm rpm's at cruise...
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  #6  
Old 11-25-2006, 09:12 PM
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The 3.69 is fine for me.
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  #7  
Old 11-25-2006, 09:17 PM
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Well the low end is awesome, but high end blows. This rearend is just laying here in my shop and hell if I can gain something why not?...I read 60mph at 2000rpm and she sounds like its screamin lol....Hey thanks guys, for this. We are waiting to blow this out real quick...
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Old 11-25-2006, 09:18 PM
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rear end ideas

I'm not allowed to have any rear end ideas in this house.
Wait, was that out loud...........











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Jimmy L.
'05 Acura TL 6MT
2001 ML430 My Spare

Gone:
'95 E300 188K "Batmobile" Texas Unfriendly Black
'85 300TD 235K "The Wagon" Texas Friendly White
'80 240D 154K "China" Scar engine installed
'81 300TD 240K "Smash"
'80 240D 230K "The Squash"
'81 240D 293K"Scar" Rear ended harder than Elton John
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Old 11-25-2006, 09:19 PM
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Quote:
Originally Posted by Krautmister View Post
I read 60mph at 2000rpm and she sounds like its screamin lol
Either you ment 3000rpm or you already have a 2.47 installed....
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  #10  
Old 11-25-2006, 09:22 PM
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Hmmmm, then maybe the tach is off...Anyway to read its signal with a meter?...So what about the diff swap here, will the 3:08 yeild something?
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  #11  
Old 11-25-2006, 09:25 PM
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Quote:
Originally Posted by ForcedInduction View Post
The 3.69 is fine for me.
this.. ..would be the voice of reason 617.952+4spd combination..
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  #12  
Old 11-25-2006, 09:27 PM
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are we talking about changing the differential in your 240?
feel like there's apples and oranges flying about..
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  #13  
Old 11-25-2006, 09:29 PM
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I think a 3.08 would be too high a gearing for a stock 240D. It *will* make it slower around town and during acceleration.
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  #14  
Old 11-25-2006, 09:29 PM
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Ok here...I have 617.952 4spd 240d same car as forced...I have triple k turbo 3" exhaust straight ...with 3:69 rearend...I have spare 3:08? laying in the floor...I asking about the gains or losses of this swap...my interstate cruising seems harsh with 3:69 in 4th gear...better?
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  #15  
Old 11-25-2006, 09:31 PM
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Originally Posted by Krautmister View Post
Ok here...I have 617.952 4spd 240d same car as forced...I have triple k turbo 3" exhaust straight ...with 3:69 rearend...I have spare 3:08? laying in the floor...I asking about the gains or losses of this swap...my interstate cruising seems harsh with 3:69 in 4th gear...better?
Much better, I thought it was a stock 240. In that case, a 3.08 should be a good match. I just like the extra acceleration/torque the 3.69 puts to the ground.

Also, the SD and D will need different axle shims. You should be able to swap them across.
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