[K3CLT]

I have a 65 Malibu SS convertible and the steering box is 4 1/2 turns LTL. I would like to change it to the 2 1/2 turn box.
What is the normal swap involve and what is the best box to use?

 

[mark f]

Check out this post, It's an old post but the info is still relevant to what you're looking for.

 

[mark f]

Forgot to put link in. Face palm. Steering Box - is it the same?

 

[Pete 67]

Any box that is 2 1/2 turns lock to lock won't have enough turning radius for an A-body. You'll lose your ability to make U-turns if that matters to you.

Chevelles boxes need 87˚ of travel which is exactly what Jeep GC & Impala SS/Caprice boxes have & made them such a popular swap.

 

[Saltherring]

Back about 25 years ago a retired GM tech rebuilt the original 4 1/2 turn box on my '65 Malibu SS, replacing the internals with 3 turn components. As I recall, the rebuilt box worked great!

 

[sz0k30]

My 70 Chevelle and 75 Monte Carlo have 3-1/4 turns lock to lock. My 67 Impala had 4-1/2 turns L to L which was one finger steering and terrible road feel. Replaced it with a 3-1/4 L to L box, much better. 2-1/2 turns is probably too quick for a street car and better suited to Autocross.