[transam1972]

would any one know, especially the early Trans Am steering box gear ratio's?..starting with 1970..and what was the first year they changed...what was the first year of the, is this right?..WS 6 option...what would be considered Pontiacs ultimate T/A steering box ratio,lock to lock and are the later steering boxes easily interchanged to the early 2nd gens?

[Dens71TA]

The Trans Am and Y99 suspension option used a variable ratio 13:1-16:1 steering box. WS6 suspension came out in 1978 and used a 14:1 fixed ratio steering box. The ultimate steering box would be the 1980's 12.7:1 steering box used in 3rd-gen F-bodies and some higher level G-bodies.

[transam1972]

thanks!!..what I really hope to find out were all of the first 19701/2 to ? 2nd gen boxes the same and when did they first begin to improve them?......what ratio is a 1972 Trans Am?

[SD73]

From the Fabulous Firebird Book it list the Steering changes as:

1970.5
Saginow High-Effort Variable-Ratio power steering with 14.5-11.1:1 Ratios, 2.5 turns lock to lock, "Formula" 14-in Wheel.

1971
Saginow High-Effort Variable-Ratio power steering (N41) with 16.6-14.3:1 Ratios, 2.5 turns lock to lock, "Formula" 14-in Wheel.

1972
Same as 1971

1973
Saginow High-Effort Variable-Ratio power steering (N41) with 15.0-11.3:1 Ratios, 2.41 turns lock to lock, "Formula" 14-in Wheel.

1974
Same as 1973

1975
Saginow High-Effort Variable-Ratio power steering (N41) with 16.5-14.3:1 Ratios, 2.41 turns lock to lock, "Formula" 14-in Wheel. Special valving aided road feel.

1976
Same as 1975

1977
Same as 1976

1978
Same as 1975-77. WS6 Used High-Effort Valving.

1979
Same as 1978

1980+
Not covered in the book. I think the later editions may have updated the info.