[KAKALAK]

How much is the norm for length of extension.? I have some box tube arms i got from a buddy and they were 2" over stock length. i got them installed but now the drive shaft binds at all heights except when locked up in rear. i also lost my layed out look in the back

Fyi 12" cylinders rear
coil over setup

 

[D-D-DJ GORDO]

1", but I always do a drop mount when I extend uppers to keep good pinion angle.

 

[KAKALAK]

1", but I always do a drop mount when I extend uppers to keep good pinion angle.

Okay with the drop mount do u do a slip yoke? I dont drive my car enough to justify totally redoing the drive train. i just wanted to drive locked up and lay low when parked

 

[D-D-DJ GORDO]

If you do a small drop, just enough to correct pinion angle you shouldn't need one. Plus it'll help you sit lower, cuz with a drop mount it'll pull your axle inwards with the extended uppers.

 

[KingsWood]

When I did drop mounts and extendable uppers, it never would adjust for me. I ended up cutting off the drops an only run upper extendables.

 

[KAKALAK]

I'm thinking I'm going to remove these uppers and cut them down an 1-1/4" and reweld them and live with the results.

 

[E$TE*LADO*CUSTOM$]

What you need to do big dog is extend lower back trailing arm about 1 inch so it will let you lock up higher and it will change the angle of the drive shaft , also you won't jam your driveshaft into your transmission.

 

[1rana3]

I'm going to add 14" cylinders on my 81' deville and planning to extend my upper trailing arms 1". I want to be able to sit 3 wheel and drive locked up and down how much would i have to shorten my driveshaft i want to minimize binding...any help would be appreciated .... thank you....

 

[KAKALAK]

What you need to do big dog is extend lower back trailing arm about 1 inch so it will let you lock up higher and it will change the angle of the drive shaft , also you won't jam your driveshaft into your transmission.

Good info and I'm gonna do that. I'm gonna see if i can cut the inch out of the uppers and weld into the lowers. if possible that will be cool. if not ill just use filler piece

 

[E$TE*LADO*CUSTOM$]

If you extend the bottoms 1 inch you don't have to shorten the top ones cause your moving the bottoms which would make your top just 1 inch difference, on mine I extended the bottoms 2 inches so then I extended the tops 4 inches so in reality I did 2 inches on top, car drove good locked up but not all the way down, so then I added 4 inch drop mount on upper trailing arm and shorten the tops about 1/2 inch, oh yeah I have 14's in back . The drop mounts change the angle of driveshaft so I needed to cut uppers 1/2 inch , now car drives layed out or locked up, I'll post some pics ,it took me a little to figure out the right combo, my homies car has12's and that's what we're working on right now

 

[E$TE*LADO*CUSTOM$]

On my car I made a slip for driveshaft, on my homies we going to keep regular driveshaft and 12's in back, I'll post pic of it

 

[1rana3]

On my car I made a slip for driveshaft, on my homies we going to keep regular driveshaft and 12's in back, I'll post pic of it

On my 82' cutlass i have 12"s in da back with stock upper and lower trailing arms and stock driveshaft i could drive layed and locked up with no binding problem........ Buy I've never had 14"s dats Y I'm wondering if i need to shorten my driveshaft on my 81' deville dont have funds for slipyolk at da moment

 

[KAKALAK]

On my 82' cutlass i have 12"s in da back with stock upper and lower trailing arms and stock driveshaft i could drive layed and locked up with no binding problem........ Buy I've never had 14"s dats Y I'm wondering if i need to shorten my driveshaft on my 81' deville dont have funds for slipyolk at da moment

I had 14's on the rear of my cutlass with all stock arms. i dont remember anything negative about it but i do know your arms are only
going to let your diff travel so much. i dont think you can get a full 14" lock up

 

[KAKALAK]

I'm extending the lower arms tomorrow .... pics would be great 4072559414

 

[trunkgotknock]

82 coupe deville 14 in the back droo mounts adjustable uppers and a slip stub from bmh drives fine all around

 

[KAKALAK]

I extended my lowers today by 1", and left my uppers extended at 2". Drives fine at all heights up to 30 mph. Was about to drive on main road and return line busted :uh:

 

[KAKALAK]

I'm going to look into making some drop mounts.... when lowered down my pumpkin hits frame

 

[E$TE*LADO*CUSTOM$]

Before the drop mounts but wasn't able to drive all the way down cause driveshaft would bind

 

[E$TE*LADO*CUSTOM$]

after drop mount, drives locked up and laid out

 

[E$TE*LADO*CUSTOM$]

locked up with drop mounts