For Those who installed an H1 box... - JeepForum.com
Search  
Sign Up   Today's Posts
User: Pass: Remember?
Advertise Here
Jeep Home Jeep Forum Jeep Classifieds Jeep Registry JeepSpace Jeep Reviews Jeep Gallery Jeep Clubs Jeep Groups Jeep Videos Jeep Events Jeep Articles
Go Back JeepForum.com > Models > Jeep CJ Forum > For Those who installed an H1 box...

Ruffstuff Axle Simple Swap Kit!Even Better Heim Pricing! From RuffstuffToxic Brakes - 3000 PSI Braided Stainless Steel Brake Line

Reply
Unread 02-13-2013, 08:51 AM   #1
wblackm
Registered User
1985 CJ7 
 
Join Date: Mar 2007
Location: South Carolina
Posts: 273
For Those who installed an H1 box...

I need some help working through the weeds on this issue.

I really would like to make this swap, as my box has a lot of play in it, and I would like to upgrade to a variable box, with larger internals to better withstand the force of 35's(and not spend 400 bucks for those on Quadratec etc.)

I have read through threads that the search returned, and to be honest, I cannot say that they have provided any clarity. For every confirmation is a refute, so I am asking input from those who have made the swap.

None of the data provided by any auto parts store show these items matching up, however, even CJ boxes between different stores show a DRASTIC variance in the specs provided. This is a part I will most likely have to special order and am trying to be as sure as reasonably possible. Any reason for the huge variances in the data?

My question to you is, which box did you swap out for? I have an '85 CJ7 with few stock items. I am running a chevy dana 44, I believe the power steering box/pump is stock, I have Saginaw 76(800?) box. Is this the box you swapped in the H1 box for?

If so, what difficulties did you have? Do I need any fitting adapters for the hoses(no specs I can find show the exact inlet/outlet fittings)

If not, which one did you swap the H1 box for? Thanks for the help as I struggle to make the right call on whether to order this or not.

wblackm is offline   Reply With Quote
Unread 02-13-2013, 09:16 AM   #2
CSP
Registered User
 
Join Date: Aug 2002
Location: Colorado
Posts: 12,087
I can assure you that any H1 box will have metric o-ring fittings. Your '76 uses SAE inverted flare fittings.
CSP is online now   Reply With Quote
Unread 02-13-2013, 09:46 AM   #3
wblackm
Registered User
1985 CJ7 
 
Join Date: Mar 2007
Location: South Carolina
Posts: 273
Maybe the box is not stock. The "76" is stamped between the pitman arm and the end cap. Most of what I find lead me to believe they put this box on CJs. However I just saw another one that said its a popular swap.

Here is picture of the 76 stamp. I misunderstood if this is in fact a date stamp...

image-512028527.jpg
wblackm is offline   Reply With Quote
Unread 02-13-2013, 10:10 AM   #4
CSP
Registered User
 
Join Date: Aug 2002
Location: Colorado
Posts: 12,087
No, that's not a date stamp it's a casting number.
CSP is online now   Reply With Quote
Unread 02-13-2013, 10:15 AM   #5
wblackm
Registered User
1985 CJ7 
 
Join Date: Mar 2007
Location: South Carolina
Posts: 273
I will try to see if I can take a picture of the box on my lunch break. From what I can tell there should be a number near the 4 bolt access plate
wblackm is offline   Reply With Quote
Unread 02-13-2013, 11:31 AM   #6
wblackm
Registered User
1985 CJ7 
 
Join Date: Mar 2007
Location: South Carolina
Posts: 273
I was able to take a blurry picture, of the serial number(not worth posting) the numbers 5691676. This is a quick ratio box(approx 14:1) according to what comes up when I search. This explains the somewhat "twitchy" nature to the box i suppose. Looks like a GM box...guess its back to the drawing board. Any ideas on a swap with a variable rate? Looks like i could get the truck version of that box to move it to 17:1.

Guess this is the beauty of buying a Frankenstein jeep.
wblackm is offline   Reply With Quote
Unread 02-13-2013, 11:43 AM   #7
CSP
Registered User
 
Join Date: Aug 2002
Location: Colorado
Posts: 12,087
They are all GM boxes. Saginaw was a branch of GM.

My CJ5 has a Waggie box in it which is variable rate. All of the FSJ boxes are variable.
CSP is online now   Reply With Quote
Unread 02-13-2013, 11:48 AM   #8
82JeepCJ7
Registered User
1982 CJ7 
 
Join Date: Jun 2010
Location: Marysville, WA
Posts: 4,813
I have an H1 box on my CJ. The stock metric O-ring fittings are what fit it. It bolts right into place with no mods needed. I would pick up a new set of lines and a new power steering pump with the correct fitting on the back (just tell them its for a 1982 CJ7 and it will all fit.) That is the easiest way to get the pressure line to mount up. Otherwise you will need a custom hose with the flare end and o-ring ends.
__________________
Beat it to fit, paint it to match!

Wheel, Wrench, Repeat.
82JeepCJ7 is offline   Reply With Quote
Unread 02-13-2013, 11:59 AM   #9
CSP
Registered User
 
Join Date: Aug 2002
Location: Colorado
Posts: 12,087
Hold on now 82JeepCJ7. I misread the original post and assumed the box was a '76.

Read the first post as he assumes it's the stock pump, which in an '85 CJ should already be correct for use with the H1 box and '85 steering hoses, no other changes needed.
CSP is online now   Reply With Quote
Unread 02-13-2013, 12:10 PM   #10
wblackm
Registered User
1985 CJ7 
 
Join Date: Mar 2007
Location: South Carolina
Posts: 273
Sorry for lack of clarification. I meant to say GM cars, camaros, Novas etc. Did they put these same boxes on CJs from the factory?

It looks like a wagoneer or j truck box might swap in if this is in fact, a non stock application as it appears.
wblackm is offline   Reply With Quote
Unread 02-13-2013, 12:29 PM   #11
brownbagg
Registered User
1930 MK Compass 
 
Join Date: Feb 2010
Location: pearl, la
Posts: 2,458
the cj came from the factory with saginaw boxes, I dont know if its casting 76, i could crawl under and look, the 76 is a 800 series box. JP may 2012 has a big write up on this. the boxes also came on pickup, with a four bolt mounting, which is heavy duty. not saying all pickup has this same box because some newer model have outside of frame mounts. my box on my 46 came from a 76 skylark
brownbagg is offline   Reply With Quote
Unread 02-13-2013, 02:35 PM   #12
waterdowg
Registered User
1984 CJ7 
 
Join Date: Mar 2009
Location: nj
Posts: 2,208
So if the OP has an 85 CJ7 and if it has the original box and steering pump, then the H1 box will fit with out any need for mods. If this is so, what year H1 box does he need to ask for?
waterdowg is offline   Reply With Quote
Unread 02-13-2013, 02:42 PM   #13
Jawbox
Registered User
 
Join Date: Jul 2011
Location: Fargo, ND
Posts: 82
This is the box I installed in my 81 using all stock fittings:
Cardone 27-7595 Remanufactured Power Steering Gear

Applications
2001-1996 AM General Trucks Hummer
2004-2002 Hummer Trucks H1
Jawbox is offline   Reply With Quote
Unread 02-13-2013, 03:00 PM   #14
wblackm
Registered User
1985 CJ7 
 
Join Date: Mar 2007
Location: South Carolina
Posts: 273
Thanks for all the replies, I just need to verify that I have the stock box. I know it's close based on everything I have seen. Seems like there is a slight chance the box on the Jeep was swapped for a pre-80s box, which would mean it uses flare fittings instead of O-ring fittings. However, I probably wont be able to figure that out until I remove the fittings. Even if that is the case, getting new hoses is probably not a bad idea.

Anyone know a good resource for original parts details(I will check haynes manual when I get home)? Or have/had a stock box post 81 that has the 5691676 part number on the gearbox?
wblackm is offline   Reply With Quote
Unread 02-13-2013, 03:15 PM   #15
skizriz
Web Wheeler
 
skizriz's Avatar
1978 CJ7 
 
Join Date: Jun 2011
Location: , Pa
Posts: 3,562
You can get a reman J10 box at Advanceauto shipped to your door for $70 after the core charge.
__________________
78 CJ7 258 TH400/Dana18 SOA/stock YJ springs 35" General Grabbers.
skizriz is offline   Reply With Quote




Jeep, Wrangler, Cherokee, Grand Cherokee, and other models are copyrighted and trademarked to Jeep/Chrysler Corporation. JeepForum.com is not in any way associated with Jeep or the Chrysler Corp.