3 bolt vs 4 bolt steering box

[kmccarty515]

i wanted to ask if anyone knows what the difference between the 3 bolt and 4 bolt steering gears are.

 

[Scottydoggs]

id have to assume thats in regards to the mounting bolts.

 

[wjburken]

i wanted to ask if anyone knows what the difference between the 3 bolt and 4 bolt steering gears are.

I’m what context are you referring to?

Do you by chance mean 3 (33 spline) vs 4 (32 spline) locating splines? If that’s what you’re meaning, the 32 spline (4 locating spline) I believe is for the 1500’s. We put the 33 spline(4 locating spline) on our 2002 2500HD.

 

[kmccarty515]

Sorry Im referring to the steering boxes themselves some have three bolts in the housing and others have 4

 

[OR VietVet]

It always helps to post the vehicle info for information because sometimes the answer requires us to look up the application to get the correct info.

 

[Fless]

It always helps to post the vehicle info for information because sometimes the answer requires us to look up the application to get the correct info.

I'm shocked at your desire for further information. Lower your standards and simply guess.

 

[OR VietVet]

I am old. I don't have enough time to guess.

 

[wjburken]

Sorry Im referring to the steering boxes themselves some have three bolts in the housing and others have 4

The only difference that I can see is that the 3-Bolts have a 14mm (.568”) diameter input shaft. The 4-Bolts have a 16.76mm (.66”) diameter input shaft.

 

[OR VietVet]

The only difference that I can see is that the 3-Bolts have a 14mm (.568”) diameter input shaft. The 4-Bolts have a 16.76mm (.66”) diameter input shaft.

Yea, you can see a difference in the diameter of the shafts, in the pics.

 

[kmccarty515]

Thank you all for you input. My application is a 2005 Tahoe LT 4x4 5.3 with hydro Boost . I have put 5 steering gear boxes in my tahoe ranging from remas to new ones. and even a Red Head box. but they all develop excessive input shaft play. When you look them up on a parts website they ask you if your unit is 3 or 4 bolt. I was wondering if the two were interchangeable?