Cross over - steering box - The 1947 - Present Chevrolet & GMC Truck Message Board Network

ericpost · 05-12-2009, 09:25 PM

Which 2WD steering box should I use for my cross over kit on my 1972 GMC Jimmy?

Chevy1TonFun · 05-12-2009, 09:41 PM

A 1972 2wd steering box. Thats what I used

bac1755 · 05-12-2009, 09:47 PM

Help me out, What is a crossover kit?

Chevy1TonFun · 05-12-2009, 10:00 PM

This is cross over steering

Any questions?

bac1755 · 05-12-2009, 10:05 PM

Looks rather simple

dammitmitchell · 05-12-2009, 10:35 PM

dude i like your steering stabalizer set up way more then mine

**Captainfab** · 05-12-2009, 10:41 PM

You can use any '69-'87 C10 steering box. Just be sure to get one that has the same style fittings as your current pump has. In around 1981 oer so they switched to metric fittings with O-rings instead of the double flare.

low900rr · 05-12-2009, 10:51 PM

Quote:

Originally Posted by Captainfab

You can use any '69-'87 C10 steering box. Just be sure to get one that has the same style fittings as your current pump has. In around 1981 oer so they switched to metric fittings with O-rings instead of the double flare.

You could always change the fitting on the back of the pump to match whatever high pressure hose you have coming off the steering box.

skchevota · 05-12-2009, 10:55 PM

The mid 70s boxes and newer went to a closer ratio( fewer turns lock to lock), these are the ones I like, it makes these trucks feel more sporty and less like a dump truck.

MickMc · 05-13-2009, 01:16 PM

All you need is the sector shaft out of a 2wd box.
No need to replace the whole box.

Yes, the later years have a faster ratio, which is nice.

But with crossover everything is a new calculation, ie lengh of pitman arm, length of arm on axle, box, sector shaft, new or old box.

Once you go crossover you'll wonder why you took so long to make the change.
I've always said it "be carefull letting your friends or girlfriends drive your truck after the conversion" it will turn fast and sharp and if your not REALLY used to a big tall truck, funny things could happen.

Mick

Burt4x4 · 05-13-2009, 05:34 PM

And then there is cross-over w/High steer and Hydro Assit

Moves the Tie-rod up high out of the way (black) crossover is green.
Wheeling in the rocks with crossover can be a b**th to steer so the Hydro makes for one finger steering

Tapped 2wd gearbox to work the hydro

MickMc · 05-13-2009, 06:06 PM

Yes, I want that next.
Is there a kit or just pieces?

Dana 60 with cross over now...

Mick

dammitmitchell · 05-13-2009, 07:06 PM

OMG burt!
i want.. hey my birthday is in the near future...
he he he

**Captainfab** · 05-13-2009, 11:40 PM

Quote:

Originally Posted by low900rr

You could always change the fitting on the back of the pump to match whatever high pressure hose you have coming off the steering box.

This is true, but first you would need the fitting and the most likely place to get one is another pump. I was just trying to save the OP one more thing to do....

**Captainfab** · 05-13-2009, 11:45 PM

Quote:

Originally Posted by skchevota

The mid 70s boxes and newer went to a closer ratio( fewer turns lock to lock), these are the ones I like, it makes these trucks feel more sporty and less like a dump truck.

Do you know how many turns lock to lock they are compared to the early ones?

Burt4x4 · 05-14-2009, 09:38 AM

Quote:

Originally Posted by MickMc

Yes, I want that next.
Is there a kit or just pieces?

Dana 60 with cross over now...

Mick

I bought the kit from PSC (hydro assit) (crossover/highsteer came from WFO) but there are many ways to gather up pieces and save money. The cool thing about PSC kit is the parts match, Ram, PS pump & Gearbox so I decided to save up and buy the kit and doit all at once and never have to mess with it again. Sometimes when you piecemill stuff togeather your allways messing with it..at least that has been my experiance. Over the years I got tired of doing things twice/three times to get it right...

By the way if you have crossover and a locker up front, steering in 4x4 mode can get hmmm..less than smooth or just plain bad = hang on. before I installed Hydroassit I had to switch from 4x4 to 2x4 when I drove at any speed higher than second gear. I HIGHLY recomend Hydroassit if you plan on running a locker up front w/crossover = one finger steering

.02c

vtblazer · 05-15-2009, 06:20 AM

Quote:

Originally Posted by dammitmitchell

dude i like your steering stabalizer set up way more then mine

With a cross over steering set up, stabilizers are not really needed any more.

Lots of companies selling sets, first round I used ORD and the 2nd version I went with Ballistic Fab.
There's allows the spring to be deleted, hence no more death wobble.
(if your running a D60)

http://www.ballisticfabrication.com/...axx=300&maxy=0

Cross over should look something like this, both should be parallel

vtblazer · 05-15-2009, 06:29 AM

Sorry ericpost, got off topic.

Later model boxes offer a closer ratio steering rate and are considered more desirable box but I'm not sure what year the input shaft changes.

ericpost · 05-22-2009, 08:17 PM

Quote:

Originally Posted by vtblazer

Sorry ericpost, got off topic.

Later model boxes offer a closer ratio steering rate and are considered more desirable box but I'm not sure what year the input shaft changes.

No worries...

So anyway where would I get a sector shaft and the needed seals to replace the 4wd sector shaft.

Oh and I'm going with high steer as well ;-)

05-12-2009, 09:25 PM	#1
ericpost Registered User Join Date: Aug 2002 Location: New Hampshire Posts: 141	Cross over - steering box Which 2WD steering box should I use for my cross over kit on my 1972 GMC Jimmy? __________________ 72 GMC Jimmy, 350, sm465 np205 (getting a face lift) 64 Nova SS, 327 SC & gassed, TH350. (blowed it up) 84 HD FX frame,80 FL tins, evo with 85hp/90tq (wifes bike) 96 HD FatBoy evo with 102hp/100tq (mine!) KEEP NOTHING STOCK!

05-12-2009, 09:41 PM	#2
Chevy1TonFun Grease Monkey Join Date: Oct 2007 Location: Fresno CA Posts: 750	Re: Cross over - steering box A 1972 2wd steering box. Thats what I used __________________ Tow Rig: 2012 Chevy 2500HD CCSB LTZ Z71 4x4 Duramax Ultimate Offroad Build: 1978 Chevy Silverado K30 Crewcab Build Link http://67-72chevytrucks.com/vboard/s...d.php?t=654053 Mud Truck: 1972 Chevy Cheyenne K30 4x4, 468/400/205, D60/D70HD, 18" Custom Lift, 17x39" IROKs FOR SALE http://67-72chevytrucks.com/vboard/c...ton-4x4&cat=12

05-12-2009, 09:47 PM	#3
bac1755 Registered User Join Date: Jan 2009 Location: Denison, Texas Posts: 245	Re: Cross over - steering box Help me out, What is a crossover kit? __________________ 1971 GMC 1972 Small Blocked DATSUN 240Z Dads old car

05-12-2009, 10:00 PM	#4
Chevy1TonFun Grease Monkey Join Date: Oct 2007 Location: Fresno CA Posts: 750	Re: Cross over - steering box This is cross over steering Any questions? __________________ Tow Rig: 2012 Chevy 2500HD CCSB LTZ Z71 4x4 Duramax Ultimate Offroad Build: 1978 Chevy Silverado K30 Crewcab Build Link http://67-72chevytrucks.com/vboard/s...d.php?t=654053 Mud Truck: 1972 Chevy Cheyenne K30 4x4, 468/400/205, D60/D70HD, 18" Custom Lift, 17x39" IROKs FOR SALE http://67-72chevytrucks.com/vboard/c...ton-4x4&cat=12

05-12-2009, 10:05 PM	#5
bac1755 Registered User Join Date: Jan 2009 Location: Denison, Texas Posts: 245	Re: Cross over - steering box Looks rather simple __________________ 1971 GMC 1972 Small Blocked DATSUN 240Z Dads old car

05-12-2009, 10:35 PM	#6
dammitmitchell the pollock Join Date: May 2008 Location: abilene, texas Posts: 4,423	Re: Cross over - steering box dude i like your steering stabalizer set up way more then mine __________________ Jack of ALL trades, Master of none.. (but one... procrastination) Army vet 02-08 RIP El Jay! Miss you brother! http://67-72chevytrucks.com/vboard/s...d.php?t=343538 http://67-72chevytrucks.com/vboard/s...d.php?t=386042

05-12-2009, 10:41 PM	#7
Captainfab 60-66 Nut Join Date: Mar 2007 Location: Coeur d'Alene, Idaho Posts: 23,252	Re: Cross over - steering box You can use any '69-'87 C10 steering box. Just be sure to get one that has the same style fittings as your current pump has. In around 1981 oer so they switched to metric fittings with O-rings instead of the double flare. __________________ Power Steering Box Adapter Plates For Sale HERE Power Brake Booster Adapter Brackets For Sale '63-'66 HERE and '67-'72 HERE and '60-'62 HERE and "60-'62 with clutch HERE Rear Disc Brake Brackets For Sale. Impala SS calipers HERE Camaro Calipers HERE D52 Calipers HERE 6 Lug HERE Hydroboost Mounting Plates HERE Last edited by Captainfab; 05-12-2009 at 10:41 PM.

05-12-2009, 10:55 PM	#9
skchevota Registered User Join Date: Oct 2006 Location: Evans, Colorado Posts: 530	Re: Cross over - steering box The mid 70s boxes and newer went to a closer ratio( fewer turns lock to lock), these are the ones I like, it makes these trucks feel more sporty and less like a dump truck.

05-13-2009, 01:16 PM	#10
MickMc Registered User Join Date: Feb 2008 Location: Albuquerque Posts: 359	Re: Cross over - steering box All you need is the sector shaft out of a 2wd box. No need to replace the whole box. Yes, the later years have a faster ratio, which is nice. But with crossover everything is a new calculation, ie lengh of pitman arm, length of arm on axle, box, sector shaft, new or old box. Once you go crossover you'll wonder why you took so long to make the change. I've always said it "be carefull letting your friends or girlfriends drive your truck after the conversion" it will turn fast and sharp and if your not REALLY used to a big tall truck, funny things could happen. Mick

05-13-2009, 05:34 PM	#11
Burt4x4 Registered User Join Date: Feb 2000 Location: Modesto, CA Posts: 1,842	Re: Cross over - steering box And then there is cross-over w/High steer and Hydro Assit Moves the Tie-rod up high out of the way (black) crossover is green. Wheeling in the rocks with crossover can be a bth to steer so the Hydro makes for one finger steering Tapped 2wd gearbox to work the hydro __________________ 1972 K5 MPFI454/Sm465/Np205/D60/14FFd/Re-Centerd H1s w/Swamper Iroks**

05-13-2009, 06:06 PM	#12
MickMc Registered User Join Date: Feb 2008 Location: Albuquerque Posts: 359	Re: Cross over - steering box Yes, I want that next. Is there a kit or just pieces? Dana 60 with cross over now... Mick

05-13-2009, 07:06 PM	#13
dammitmitchell the pollock Join Date: May 2008 Location: abilene, texas Posts: 4,423	Re: Cross over - steering box OMG burt! i want.. hey my birthday is in the near future... he he he __________________ Jack of ALL trades, Master of none.. (but one... procrastination) Army vet 02-08 RIP El Jay! Miss you brother! http://67-72chevytrucks.com/vboard/s...d.php?t=343538 http://67-72chevytrucks.com/vboard/s...d.php?t=386042

05-15-2009, 06:29 AM	#18
vtblazer Registered User Join Date: Oct 2003 Location: Central Vermont Posts: 8,537	Re: Cross over - steering box Sorry ericpost, got off topic. Later model boxes offer a closer ratio steering rate and are considered more desirable box but I'm not sure what year the input shaft changes.

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