69 Z28 Leaf Springs.

[Mike S]

 That fact that the spacing between the upper perch and lower perch bracket is not fully closed make me believe a leaf was added. I don't think the factory would leave a spacing like that.

Mike

[bertfam]

Well, either those springs have been modified/repaired, or they're not original. Every leaf should have the rectangular "pocket" at the end, and tapered (one of them appears to be just cut off). Also, the clamps (also known as straps) don't look original either. I agree, I think someone took an original set of 4 leaf springs and added another (incorrect) leaf!

And I'm assuming you mean a 3.73 gear, not 3.37, right?

With the factory multi-leafs.....was the main spring a dual taper (width and thickness) like the mono leaf, or was it a continuous width along its entire length

Mike, the only taper is at the end of each leaf. Approx the last 2 to 2.5" inches. The rest is all one thickness and width.

Ed

[onekidbill]

Hi Ed
Sorry that was 3:73 gears I installed. The rear end looks like it was a 68 or 69 BS 3;31 12 bolt posi.

[cook_dw]

Someone did the same thing to my 68 BITD.  4 leaf with the 5 added.  I was told it was an old drag racer trick.  Not sure how legit that really is. 

[69Z28-RS]

Someone did the same thing to my 68 BITD.  4 leaf with the 5 added.  I was told it was an old drag racer trick.  Not sure how legit that really is. 

   ...you're not sure how 'legit' it is ...from what perspective??? 

[bertfam]

The rear end looks like it was a 68 or 69 BS 3;31 12 bolt posi

It's a 3.31 12 bolt posi alright, but it originally came out of a 1971 Nova! That axle was assembled at the Warren, MI plant on the night shift, Julian day 062 (?) which would have been Wednesday, March 3rd, 1971.

Ed

[cook_dw]

Someone did the same thing to my 68 BITD.  4 leaf with the 5 added.  I was told it was an old drag racer trick.  Not sure how legit that really is. 

   ...you're not sure how 'legit' it is ...from what perspective??? 

The racing theory.

[onekidbill]

Thanks Guys. It will be nice to get it back on the road this regardless.

[69Z28-RS]

Someone did the same thing to my 68 BITD.  4 leaf with the 5 added.  I was told it was an old drag racer trick.  Not sure how legit that really is. 

It should stiffen the rear suspension up a bit...   but your traction bars might do as well or better at putting the power to the pavement? 

   ...you're not sure how 'legit' it is ...from what perspective??? 

The racing theory.