Quadralink measurements with Fab 9"

[bluespeedball]

Ok guys, I will fully accept any and all "roasting" that I will get from this question. I have tried to search for my answer but dont know how to word it.

So, 1969 Camaro that has always had a GM 12 bolt from the factory. Just recently scored a Currie 9" that I will be installing the DSE Quadralink brackets onto. The kit came with instructions showing proper bracket locations to be welded.

My question is that with my former GM 12 bolt that the pinion is center of the axle and obviously the Fab 9 is offset. I have to have it narrowed for my application and unsure of how it should be done.

First, how is a factory 9" installed in regards to pinion shaft offset? Is the housing centered and the drive shaft angled toward the pinion shaft? This doesn't seem like it would be the answer due to the drive shaft not being inline with the transmission. Is the housing offset and the axles narrowed a different length on either side so that the pinion shaft is centered like the GM 12 bolt?

I feel like an idiot for asking this question but I have 0 experience with a Ford 9" or variation thereof. Thanks guys!

[98ssnova]

I don't know the answer. Sorry! But have you contacted DSE to see if they can help you?

[Build-It-Break-it]

From my understanding usually the Ford 9"pinion is offset to the passenger side 1/2" and the axles aren't going to be the same length because of this.

I believe all first Gens put the motor/trans to the passenger side 1/2" to offset the driver/passenger weight.

Id call or look it up to be sure, I'm a rookie at this myself. You don't want to have to pay to do your 9" twice

[bluespeedball]

I have not contacted DSE as of yet. This is is NO WAY disrespecting them but I have had to call 3 times in regards to needing a template due to mine being damaged. I recall speaking to 3 individual people and was forgot about on 3 different occasions. Each phone call gave me the impression that I was an inconvenience having to be helped. Thought their products are amazing I got the impression that I was interfering with their daily activities. This being said, Im trying to delay a phone call to them.

I am aware that the 9" is offset and that axle sizes are different lengths. What I am unsure of is if this is correct way to install it.

Option 1: Center the rear axle so that centerline of the axle housing is center of the car or

Option 2: Have the rear end narrowed so that the pinion shaft is center of the car and the axle is off set.

Maybe Im complicating this more than what it has to be but this is my first experience with a 9" housing.

[MillerBuilt]

Forget about the actual differences between the two rears. Your car and or application will determine your pinion offset.

In your case, a 1969 Camaro has a factory offset of 1/2" to the passenger side. So unless you have altered your engine/tranny mounts to locate otherwise, you will build your housing (9" or 12 Bolt) with a 1/2" pinion offset to the passenger side so that crank, tail shaft, driveline, and pinion are in one harmonious line.

example scenario: 54-1/2" desired wheel mount surface with 1/2" pinion offset to the passenger side.

PC = Pinion Center
WMS = Wheel Mount Surface

PC to WMS driver side ----------- 27-3/4"
PC to WMS passenger side ------ 26-3/4"

To locate your suspension brackets you would make a mark on your housing at 27-1/4" from either end, which would be center of your overall rear-end width, AND actual center of car. You then would work out from there per DSE instructions to place/locate suspension brackets.

Hope this helps....

Jay

[simbad's68]

GAP set up my Fab 9 housing. Narrowed the housing, welded the Quadra Link brackets on and centered the pinion. Tim said this is how they set their cars up.