Hey everyone, I read some of the other posts about steering box questions on here. But I still haven't found an answer to my question. I recently purchased a steering box from an 89 iroc off of E-Bay. The guy had very good reviews, and seemed like a very straight up guy. He claims this is the (Famous XH coded box) the best box GM ever made for our cars....Is this true?...Anyone ever heard of this?.....I checked the box and it does have XH stamped on it, is this a good box? What's the ratio?....It does seem to go lock to lock in 12.25 turns, and this is with my crappy 14in tires. By the way, will there be a problem with my my small tires and this box?.....Thank you.

 

12.25 turns?? Thats a boatload.

I'm geussing thats a typo.

Sorry, don't know anything about a XH box.

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ASE Mechanic/Machinist/Smog Tech

1999 NBM Trans Am
1986 Chevy 3/4 ton pick up
1981 corvette
1995 Kawi ZX6R

GO #3

[This message has been edited by Engineboy (edited October 12, 2000).]

 

Oops, Yes I meant 2.25 turns.....sorry...

 

Check the box for a casting # of "26000525", that's the 2.25 turn box I bought from a 1987 IROC-Z.


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-Tom P (Hot rodded 1986 Firebird 2.8l) from http://www.f-body.net/mailbag/3rd/3rd_mailbag.html message boards

 

The quick ratio boxes usually have a large Z cast in the body of the box.

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Stephen's racing page

87 IROC-Z Pro ET Bracket Race Car and knocking on the SuperPro ET class
383 stroker (carbed) with double hump cast iron heads and pump gas
LS6 Big Block buildup now in progress

Best results before the engine blew up
Best ET on a time slip: 11.857
Best corrected ET: 11.163
Best MPH on a time slip: 117.87
Best corrected MPH: 126.10
Best 60 foot: 1.662

Racing at 3500 feet elevation but most race days it's over 5000 feet density altitude!

Member of the Calgary Drag Racing Association