Steering box

[ssn696]

Isn't the pitman arm different between the 600 and 800 series boxes? Or was that for pre-84? I don't recall.

Yep. Forgot that detail by the time I finished typing the original reply. The good news is that repops are out there from Summit. Allstar, I think?

 

[GroceryGetter83]

Picked this up tonight (Out of a 1992 Trans AM):



PN 260000525, with HX stamped on it. I think its the 12.7:1 box.

 

[ssn696]

Good Deal! Your part number is 56357.

 

[MC96]

https://allstarperformance.com/content/1143.pdf

Here is a better sheet for pitman arms

Dont refer to the 605 box as a 600.

600 is something else entirely and more like the 700/800 series

 

[69hurstolds]

Keep in mind an F-body has different stops I think. Need the G-body arm. Can't recall off hand if they're too short or too long on the rotation arc. But the stops can be changed. I'm sure someone that's dug into them knows for sure. Basically a 3rd gen Z28 or Trans Am is guaranteed to be a 12.7:1.

I saved the following chart a few years ago, courtesy of elcaminocentral.com:

Late Model 12.7:1 quick-ratio gearbox
ID markings YA, WS and HX
Line Thread Size: M18x1.5 and M16x1.5
Number of Mounting Holes: 3, (missing leg H-pattern)
Input Shaft Diameter: ¾-inch
Output Shaft Diameter: 1 ¼-inch
Number of Turns Lock to Lock: 2 ½ - 3
1984-'88 Monte Carlo/Malibu with Z65 suspension
1983-'88 Malibu, El Camino
1982-'92 Camaro except FE1 soft ride suspension
1984-'87 Regal with FE2 or FE3 sport suspension
1983-'84 Hurst/Olds
1985-'87 Cutlass with 5.0 (VIN code 9)
1982-'85 Trans Am
1986-'92 Firebird except FE1 suspension
1986-'87 Grand Prix with FE2 touring or F41 heavy duty suspension

 

[pontiacgp]

If that is an HX box it has a total travel of 64 degrees compared to the G body box which has 78.5 degree travel. Don't expect to be making any tight u turns

 

[GroceryGetter83]

Thanks everyone!

 

[ssn696]

14 (605 + 78) < 12.7 (800 + 64)

 

[GroceryGetter83]

14 (605 + 78) < 12.7 (800 + 64)

What are you trying to show here?

 

[ssn696]

Geek humor. Close-ratio steering box is more appealing that U-turning on a dime. If it's not to your liking, you can later exchange it for a rebuilt Monte Carlo SS.

Good score on the T/A box. F-bodies are disappearing every day.