Rear end swap

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As I continue building my bracket 79 spirit, I am swapping out the model 20 for a mopar 8 3/4. Now I know the spring perches are off by 1/2 inch total. The mopar is wider than the amc 20 by that amount, which means I flex the leaf springs out a 1/4 inch per side. Would there be any concerns running it like that or should I change the spring perches to the correct width. The mopar is 44" and the amc is 43 1/2" perch center line measurement. Traction devices, i will start with south side machine lift bars, but may go to calverts later on. I already have the south side bars. Thanks Paul

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xspiriment Members Profile Send Private Message Find Members Posts Add to Buddy List AMC Nut Joined: Apr/27/2009 Location: New Mexico Status: Offline Points: 379	Post Options Post Reply Quote xspiriment Report Post Thanks(0) Quote Reply Topic: Rear end swap Posted: Feb/08/2019 at 10:10pm
	As I continue building my bracket 79 spirit, I am swapping out the model 20 for a mopar 8 3/4. Now I know the spring perches are off by 1/2 inch total. The mopar is wider than the amc 20 by that amount, which means I flex the leaf springs out a 1/4 inch per side. Would there be any concerns running it like that or should I change the spring perches to the correct width. The mopar is 44" and the amc is 43 1/2" perch center line measurement. Traction devices, i will start with south side machine lift bars, but may go to calverts later on. I already have the south side bars. Thanks Paul

WesternRed Members Profile Send Private Message Find Members Posts Add to Buddy List AMC Addicted Joined: Aug/03/2010 Location: Australia Status: Offline Points: 5799	Post Options Post Reply Quote WesternRed Report Post Thanks(0) Quote Reply Posted: Feb/08/2019 at 10:42pm
	You could just oval out the spring centering holes in the perches so that the springs at least sit straight and you aren’t loading up the bushes.
	I've finally given up drinking for good...........now I only drink for evil.

wheelz Members Profile Send Private Message Find Members Posts Add to Buddy List AMC Apprentice Joined: Jan/29/2019 Location: NJ Status: Offline Points: 101	Post Options Post Reply Quote wheelz Report Post Thanks(0) Quote Reply Posted: Feb/09/2019 at 6:59am
	Use solid aluminum bushes in the front eyes and you can cheat (press) them over enough to straighten out. I use aftermarket spring shackles out back and used a press to give them a slight offset as well for the Ford granada 9 axle I have in Spirit. I am using the complete Caltrac setup too