Author Topic: 71 280 SEL 4.5 rear end in 67 250 SL ?  (Read 3492 times)

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71 280 SEL 4.5 rear end in 67 250 SL ?
« on: June 28, 2004, 19:03:09 »
Hi guys

I know you have been asked this question a hundred times but here goes.

Will a rear end from a 71 280 SEL fit in a 67 250 SL?  Mine is 3.92 ratio and the donor is 3.2? can't read the last number.  Haven't bought it yet just wanted to know first.  

Thanks in advance
Tom

tdesjardins@ucsd.edu

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Re: 71 280 SEL 4.5 rear end in 67 250 SL ?
« Reply #1 on: June 28, 2004, 20:18:01 »
Yes it will fit with minor modifications. There are some previous posts about this. Also the brakes are not the same, they use different pads. It is more or less a bolt-in swap.

A Dalton

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Re: 71 280 SEL 4.5 rear end in 67 250 SL ?
« Reply #2 on: June 28, 2004, 20:38:52 »

 Is the 250 a stick ???

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Re: 71 280 SEL 4.5 rear end in 67 250 SL ?
« Reply #3 on: June 29, 2004, 09:21:33 »
quote:
Originally posted by A Dalton


 Is the 250 a stick ???

yes my 250 is a 4 speed

Tom

A Dalton

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Re: 71 280 SEL 4.5 rear end in 67 250 SL ?
« Reply #4 on: June 29, 2004, 09:29:47 »
Stick is fine for the changeout...
 BTW, the 108 rear is a 3,27...

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Re: 71 280 SEL 4.5 rear end in 67 250 SL ?
« Reply #5 on: June 29, 2004, 09:52:24 »
I guess I'd better chime in! That unit is the one you're looking for if you want to drop the rear ratio to a more bearable level. I'd recommend getting it as complete as possible (preferably with traililng arms, etc.) just in case you mangle some bolts getting the old one out. I started my swap back in February, but have been taking my time as I wanted to swap out as many bushings, seals, etc., as I could while the thing was out. Occasionally,. certain bits would take a while to come in.

You'll need to get the speedo recalibrated if you want it to be usable. That'll run you about $150.

How many miles are on your 250?

John

John Livingston
Newport News, VA
1968 280SL 4 speed manual

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Re: 71 280 SEL 4.5 rear end in 67 250 SL ?
« Reply #6 on: July 01, 2004, 18:53:44 »
[It is a european model so KM but I have 80 on the odometer and from the records that came with it looks like the second time around.  ote]Originally posted by johnlivingston

I guess I'd better chime in! That unit is the one you're looking for if you want to drop the rear ratio to a more bearable level. I'd recommend getting it as complete as possible (preferably with traililng arms, etc.) just in case you mangle some bolts getting the old one out. I started my swap back in February, but have been taking my time as I wanted to swap out as many bushings, seals, etc., as I could while the thing was out. Occasionally,. certain bits would take a while to come in.

You'll need to get the speedo recalibrated if you want it to be usable. That'll run you about $150.

How many miles are on your 250?

John

John Livingston
Newport News, VA
1968 280SL 4 speed manual
[/quote]