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Old 10-27-2004, 12:13 AM
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Steering box/Coupler (rag joint) Questions

Hi all. Im switching from a small to big block in my 71 Nova. I was told that while doing this swap I will need to swap from power steering(which the car already has) to manual steering. Well I bought a manual steering box off a 1970 big block Nova and it looks the be almost the exact same size as my power steering box. Can anyone tell me if I actually need to switch to manual steering for this conversion or can I keep my power steering. Also if I do have to switch to manual steering, will the Rag joint off the power steering box fit on the manual steering box? The box I bought came with the actual box and the Pitman arm, but no rag joint. Any info would be GREATLY appreciated. Thanks for everyones time.


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Old 10-27-2004, 12:34 AM
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IIRC, big-block Novas were available with power steering from the factory. You may run into steering gear clearance problems if you are using small-block motor mount frame brackets. Big-block frame brackets move the engine a little to the right.

BB cars also used a trans crossmember with the mount holes offset to the right. All T400 crossmembers are offset, as are the BB stick crossmembers, but I hear the standard manual/T350/PG crossmember can have the holes elongated so everything will line up if you're not using a T400.

The steering couplers are different, I believe because the steering gear input shafts are of different diameter.

You may need to check your heater box clearance also. BB Novas used a different heater box & core.

The fan shrouds may also be different due to the engine offset, but I don't know for sure.
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