1961-'63 Buick Special/Olds F-85 rear end conversion

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(Wheel bolt pattern)
 
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==Wheels==
 
==Wheels==
 
===Wheel bolt pattern===
 
===Wheel bolt pattern===
The original Buick wheels are 4 on 4-1/2" pattern. The GM rearend uses a 5 on 4-3/4" pattern. The axles can be redrilled to reuse the original 13" Buick wheels, or the front drum brakes can be changed to a 5 bolt pattern or better yet, swap the front drum brakes to disc brakes,[http://www.bccpbrakes.com 1961-'63 Buick Special, Olds Cutlas F-85 Front Disc Brake Conversion Kit ] having the correct 5 on 4-3/4" pattern to match the replacement rearend. Or two different spare tires can be carried.
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The original Buick wheels are 4 on 4-1/2" pattern. The GM rearend uses a 5 on 4-3/4" pattern. The axles can be redrilled to reuse the original 13" Buick wheels, or the front drum brakes can be changed to a 5 bolt pattern or better yet, swap the front drum brakes to disc brakes having the correct 5 on 4-3/4" pattern to match the replacement rearend. Or two different spare tires can be carried.
  
 
===Wheel backspacing===
 
===Wheel backspacing===
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[http://www.ddperformance.com/shop/product_info.php?products_id=206cPath=111_137 D & D] has adapters for using a BOP bellhousing with a T5 5 speed manual transmission along with all the other parts necessary for the swap. Another option is to use a TH200 automatic transmission; D & D has an adapter for that conversion as well. The floor tunnel along with the driveshaft will have to be modified.   
 
[http://www.ddperformance.com/shop/product_info.php?products_id=206cPath=111_137 D & D] has adapters for using a BOP bellhousing with a T5 5 speed manual transmission along with all the other parts necessary for the swap. Another option is to use a TH200 automatic transmission; D & D has an adapter for that conversion as well. The floor tunnel along with the driveshaft will have to be modified.   
  
==Clutch linkage==
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Clutch linkage==
A fabricated cable clutch linkage is one option because of the lack of room on the firewall for a clutch master cylinder. That said, there may well be a way to use a hydraulic throw out bearing w/a remotely mounted clutch master cylinder.
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A fabricated cable clutch linkage is one option because of the lack of room on the firewall for a clutch master cylinder. That said, there may well be a way to use a hydraulic throw out bearing w/a remotely mounted clutch master cylinder. If you can find it, the 1963 Skylark with the Borg Warner T10 4 speed clutch pedal and linkage can be used  with a conventional throw out bearing and arm.
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[[Category:Rearend]]
 
[[Category:Rearend]]

Latest revision as of 09:37, 11 September 2023

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