Rear disc brake conversion kits for 74 Challenger?

[FBJJChallenger]

Hey Guys,

I want to convert from drum to disc in the back and was wondering what your opinion is as far as the best (in the range of $500-$800) conversion kit to buy? SSBC makes one but it only says it works on 70-72?? Any help/advice is much appreciated!

James

[HP2]

I think someone on here is selling a kit for like $300

[brads70]

   Ya I tried to find it for him , but can't find it? Sold maybe?

[FBJJChallenger]

I've tried google searching for them without much luck either. Hmm....

James

[HP2]

Okay, my mistake, $500 which includes shipping, and it is a SSBC kit.

http://www.cuda-challenger.com/cc/index.php?topic=68862.0

[Chryco Psycho]

The SSBC kit has very wide calipers & they interfer with the sway bar , ask me how I know 
 Dr. Diff supposedly has a good conversion kit but I have no experience with ti

[FBJJChallenger]

Yea,

And the SSBC's say they fit 1970-1972 Challengers, so I'm wondering if there would be issues there as well.....

[Chryco Psycho]

if you have the rear sway bar it will interfere on any Ebody

[torqueaddict]

Will rear disc brakes really give you significantly more stopping power? If so Iwould be game to get a set.

[Chryco Psycho]

Not really , the drums are limited so they do not use max power , the difference comes in with multiple hard stops & the brakes tend to overheat 

[Katfish]

Will rear disc brakes really give you significantly more stopping power? If so Iwould be game to get a set.

I really question the need for rear discs, other than the cosmetic appeal.  I have the 11.75 discs in front with 11x2.5 drums in the rear.  I even put the smaller 7/8" wheel cylinders to help limit the rear's.  They still lock up before the fronts.  So the the standard solution is to put in an adjustable valve.  But what does this do?  It effectively limits the pressure to the rear.

So what do you think is going to happen with discs on the rear?  You'll have to crank the adjustable valve down to nothing.
I hear the arguments about unsprung weight, so if it's worth $600-800 to you go ahead, I don't get it. 

Now if you are putting 13" or larger discs up front, it might help, but I still wonder.

[torqueaddict]

So even aftermarket disc in the front is still not a huge gain is what your saying

[Katfish]

No, don't get me wrong.

I went from 4-wheel drum (11") to 11.75" disc up front.  Huge improvement.

I just question whether there's a need for the rear.

Lot of good info here:

http://www.moparaction.com/tech/archive/disc-main.html

[ajantics]

The SSBC kit has very wide calipers & they interfer with the sway bar , ask me how I know 
 Dr. Diff supposedly has a good conversion kit but I have no experience with ti

Would that still apply if you used the hotchkis rear sway bar instead of the factory aar style sway bar?

[Chryco Psycho]

not sure how the Hotchkiss bar fits but if it is above the diff & links down onto the rear leaf springs it will probably hit the bar