Formula S (HD) Leaf Springs

mvh said

My 67 fastback with HD suspension package (NOT Formula S) shows 893/892 for the torsion bars, and 072 for the leaf springs.

Note that replacement springs may or may not have the same number of leafs — you can get the same spring rate with fewer, heavier leafs or with more, thinner leafs.

Click to expand...

This is partially the reason for the post. I was under the impression the HD bars and springs were based on the Formula S package.

My 68 is a /6 AC car which I read here also got the HD suspension … that got me wondering about springs as I believe T-bars are engine based.

It ‘appears’ /6 A/C got HD all the way around even with the 7 1/4 readend.

Without A/C the T-Bars are significantly smaller (drag race bars).

Learn something new everyday.

PMW