12 bolt question

[Anonymous]

whould a 12 bolt from a chevelle 1970 fit in my g-body i know it will be a little longer but will the stock suspension and control arms fit and if so how much bigger is it that the stock g-body

 

[bowtie81]

this is off the home page, faq's



Which rearends can be swapped into the 78-83 Malibu?
The stock 78-88 A/G body rearend housing (housing flange to housing flange) is 52.125". Here is a list of other common rearend dimensions:

Body Style Housing Width
64-67 Chevelle 54.250"
68-72 Chevelle 55.250"
67-69 Camaro 54.250"
62-67 Chevy II 52.125"
70-81 Camaro 55.375"
82-92 Camaro 55.750"
93-up Camaro 59.250"
68-76 Nova 54.250"
78-88 A/G Body 52.125"
Information from Chevy High Performance Magazine 3/2001

you will have to get rims with probably a 6.5 b/s. i have a 12 bolt from a 66 chevelle and my rims are 5.5 b/s, the control arms for mine went right in with no problem and the spring perches were bang on too.

 

[Anonymous]

thanks alot i apreciate the help so i shold have no problem putting this in my regal then. i found a 12 bolt for 550 so i just thought id ask. i would also have to change my drive shaft rite? if so im using a turbo 350 or would i have to have the shaft shorten

 

[bowtie81]

when i did mine i changed the driveshaft to a bigger one so it had to be shortened, and youll have to get different u-joints. it is a pretty easy bolt in. 550 is a great deal.

 

[malibulvr]

If you still have factory upper and lower control arms, you will have a little problem bolting the upper control arms on because the upper ears on the 12bolt are a little different geometry than the stock 7.5" rear end and they cause the control arms to bind a little, but with a little persuation the stock control arms will go on. IMO you need to at least buy a set of adjustable upper control arms with rod end style end. Using the 12bolt with factory control arms also produces a wierd pinion angle that can be corrected by redrilling the holes in the lower mounts on the rear end and in the upper control arm on the end that bolts to the upper ears on the rear end. On my car the driveshaft length was fine but I did have to change to a conversion style Ujoint. My car is lowered a little so if yours is stock height you may have to shorten the driveshaft. Good luck with it.