Formula S (HD) Leaf Springs

[The A-Body Guy]

Hello -

Does anyone know how many different leaf springs were used on Formula S (HD) cars from 1967-1969 and or if certain part numbers are better / worse?

I recently found out about at least two:

1967 - Six leaves both sides. Galvanized inter-liners. Both have the same last three digits 056.

1968 - Six leaves both sides. Plastic inter-liners. Both have the same last three digits 132.

I physically have both of these and they appear identical on the cars. My guess is ‘Ma MOPAR’ wanted to save money, switched to plastic and changed the part number.

Thanks in advance.

PMW

 

[mvh]

I don't know that those stamped numbers correspond to the part numbers, because those don't match anything in my reference. The following are all 6 leaf "HD" springs.

2808 607 - 1967 - HD except 383
2808 677 - 1967,68,69 - 383 (all)
3004 588 - 1968,69 - HD except 383
3420 183 - 70-72 - HD 2dr
3420 184 - 70-72 - HD 4dr
3549 945 - 1973 - HD
3722 293 - 1974 - HD 2dr
3722 294 - 1974 - HD 4dr

 

[The A-Body Guy]

Here is a section from the build sheet … I know the 892 & 893 are correct ‘build codes) for heavy duty (340 / 383) formula s cars.

The leaf spring code is 056 on the ‘67 & 132 on the ‘68.

I apologize these would be build ‘codes’ not ‘part numbers’.

 

[The A-Body Guy]

 

[toolmanmike]

Standard springs were 5 leaf. HD were 6.

 

[The A-Body Guy]

Standard springs were 5 leaf. HD were 6.

Thanks for your time.