Stock ball joint specs?

I'm hoping anyone can tell me the length and taper differences between the stock 2wd and stock 4wd lower ball joints.

I've pulled the rough dimension for a 2wd spindle, flipped the lower ball joint on a 4wd lower control arm on a 4wd chassis and loosely drawn in a custom upper arm. Since it's a custom upper arm anyway, it doesn't matter if the top ball joints are the same, but the 4wd chassis uses a bolt-in lower ball joint, verus the pressed in lower on a 2wd lower control arm, but if the tapers are the same, then it won't matter, can just be flipped. Right now, with the lower angled down so the spindle sits on the ball joint ~.5" below the frame mount point, the upper arm spindle to balljoint is contacting ~.25" above the chassis mount location and the custom upper arm is ~70% the length of the stock lower.

10 Degrees or 2" per foot for the 2wd but should be the same for all GM built since about 1970.
 I can get you the length and width of the top and bottom of the taper latter. Have to find a stock height stud for the howe ball joints.

Maybe you can confirm the taper buy calling PP?

I have e-mails out to moog, power performance and howe. I'm not sure if howe even makes 4wd ball joints, but I figure it can't hurt. Anyone with a decent set of calipers could answer this all for me though. Diamter at the base and just below the threads as well as the vertical distance between the two measurements should be enough info to know if this will work or not with the stock LBJ.

Also, I had some more time to look over this again, I had missed the upper mounting point in my quick drawing by about a quarter inch and I re-checked the angles of the arms, I also pulled some measurements for a drop spindle off of S10F and plugged that in. It looks like where I had the arms before could actually go up a full half inch to level off the upper arm, but it will also level off the lower arm as well, so a tall upper and or lower would still be a little helpful. Ride height measure from the ground to the engine crossmember with a 26" tall tire at the lowered suspension height would be 6.4".

One last post for the morning, I've also now got an e-mail out to QA1. They have re-buildable ball joints for both the 2WD upper and lower and the shafts look entirely interchangeable, so if the upper and lower ball joints do work out to use the same four bolt mount, which it appears they do, I should be able to use their standard four bolt mount with the proper pin for upper and lower. I would have contacted Moog about their Monoball balljoints as well, but could find no information about them or their support on their website AT ALL.

I woke up this afternoon to an e-mail back from QA1, ALL READY? Wow. They were the last group I e-mailed and they got back to me at just after 9am. Here's what they sent in response to my e-mail essentially asking if I could get a four bolt mount with a 2WD S10 lower ball joint pin:

"We can sell the body of the ball joints with a .5'' longer stud if you would like. The part number for the body is 1210-504 and the stud will be 9029-205. The price on the body is $29.95 each and the stud will be $19.95 a piece. We also have a optional tool kit with a spanner wrench and other tools needed to rebuild the ball joint. The stock number for that is 1891-103 and is $28.95.
 
I do want to make sure you understand that we do not recommend these ball joints for street use. We recommend them for race applications only.
 
If you would like to order these let me know. My telephone number is 952-985-5675 EXT 244.
 
Thanks again,
 

David Kass"

So yup, what I thought was going to be the hardest part of this whole thing, just dissapeared. Ball joint for 4WD lower control arm with 2WD tall ball joint pin: Check. Cost of $50:Not too bad considering the alternatives, even just for a 2WD LCA.

WTF? So I spent a ridiculous amount of money on the HOWE's and there was another option.

Do you still need the specs?

Nope, but thanks! QA1 said they'd send me a pdf if I need one, but considering they have the parts in stock, I didn't bother.

Well hell, get the PDF and email it to me. Always good to have the info.

i demand that you pay $150 for those bjs.   

$180?
That's what I spent

i demand that you pay $150 for those bjs.   

I've never paid a dime for BJ before and I'm not about to start now!