Stock Rear end width?

Bill Diehl · 07-28-2014, 02:39 PM

What's the tolerance here? 1/8' , 1/2", 1" , rules say.... distance between backing plates cannot be changed.

I have looked under a lot of cars the last year or so and, well I will just leave it at that.

The question is....I am supposed to measure in at 56" and I have a housing here that's 55", what would you do?

FireSale · 07-28-2014, 03:58 PM

As you said, the rules state that the distance between the backing plates can't be changed from stock (assuming we're talking a stocker). Later it states that a replacement rear end can be widened or narrowed to obtain that original distance. You can't bolt something on to do that so it's would be a machine shop task.

As for looking under other peoples cars, you need to make your own decisions as to whether to follow the rules or not.

Dale

MAURICE BLENDHEIM · 07-28-2014, 05:17 PM

Bill… Now that 4 wheel disc brakes are allowed, the BP-BP measurements seem to have fallen away. Most fit the tire to the wheel housing and choose rim offset to work. This allows a lower closer to "Stock" ride height. Read deep into the rule (real deep). MB.

Mark Yacavone · 07-28-2014, 05:39 PM

Quote:

Originally Posted by MAURICE BLENDHEIM

Bill… Now that 4 wheel disc brakes are allowed, the BP-BP measurements seem to have fallen away. Most fit the tire to the wheel housing and choose rim offset to work. This allows a lower closer to "Stock" ride height. Read deep into the rule (real deep). MB.

Pretty much sums up tech's attitude with this.
What can be gained? Loss of a few pounds?
8-10 " wheels only come with few offset options.
Special made wheels with a bunch of offset would be really noticeable on ,say a 69 Camaro, wouldn't they be?

07-28-2014, 02:39 PM	#1
Bill Diehl Member Join Date: Dec 2013 Posts: 311 Likes: 2 Liked 9 Times in 8 Posts	Stock Rear end width? What's the tolerance here? 1/8' , 1/2", 1" , rules say.... distance between backing plates cannot be changed. I have looked under a lot of cars the last year or so and, well I will just leave it at that. The question is....I am supposed to measure in at 56" and I have a housing here that's 55", what would you do?

07-28-2014, 03:58 PM	#2
FireSale VIP Member Join Date: Feb 2014 Location: Lakewood Washington Posts: 1,407 Likes: 29 Liked 236 Times in 127 Posts	Re: Stock Rear end width? As you said, the rules state that the distance between the backing plates can't be changed from stock (assuming we're talking a stocker). Later it states that a replacement rear end can be widened or narrowed to obtain that original distance. You can't bolt something on to do that so it's would be a machine shop task. As for looking under other peoples cars, you need to make your own decisions as to whether to follow the rules or not. Dale __________________ Dale Shearon 68 Mustang 6394

07-28-2014, 05:17 PM	#3
MAURICE BLENDHEIM Senior Member Join Date: Jun 2011 Location: Langley (no igloos), British Columbia, Canada Posts: 551 Likes: 269 Liked 228 Times in 78 Posts	Re: Stock Rear end width? Bill… Now that 4 wheel disc brakes are allowed, the BP-BP measurements seem to have fallen away. Most fit the tire to the wheel housing and choose rim offset to work. This allows a lower closer to "Stock" ride height. Read deep into the rule (real deep). MB.