Ford 9" from a 76 half ton - Page 2 - JeepForum.com

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post #16 of 82 Old 07-13-2010, 01:04 PM
Chris98TJ
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Quote:
Originally Posted by Apex View Post
So let's say it is a 31 spline axle. Will that hold up to rough wheeling locked on 35s? Or should I go with 35 spline shafts?

If I go 35 spline, it'll just take longer to get this under my Jeep as I will have to build it slowly as I save up money to do this.

yes, i have the 8.8 with the 31 spline shafts and they hold up well and i pound on it. the shaft sizes are very similar b/w these 2 axles
35 spline is for when you get into BIG meat 35's are still small. id say 38's are getting into the big category. but then if you ran alloy 31 spline you could run bigger


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post #17 of 82 Old 07-13-2010, 06:45 PM Thread Starter
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Ok so the stock shafts are good for my application for now...

my issue is I would like to step up to 35 spline shafts so that I can do an ARB one time and be done with it...can I simply swap to 35 spline non alloy factory replacement shafts for the time being? Something from superior or ten factory?

Or should I just save up and do the Currie hi9 3rd member with 4.10s and ARB, assembled for $1400?

So then I'd have about $1600 into a near bulletproof high pinion 9".

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post #18 of 82 Old 07-13-2010, 07:02 PM
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just save up and do the Currie hi9 3rd member with 4.10s and ARB, assembled for $1400?
Can you show me where you can get that for $1400?...
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post #19 of 82 Old 07-13-2010, 07:04 PM Thread Starter
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Can you show me where you can get that for $1400?...
just the center section..hold on let me see if I can reproduce this.

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post #20 of 82 Old 07-13-2010, 07:08 PM
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Don't get the Currie Hi9... it uses freaking 8.8 gears.

IMO I'd pass on it... aftermarket parts and housings and everything are so cheap you're better off just spending a bit extra and buying a nice housing to start and a Moser or Strange center section(if it's a rear application). Or the $2000 TRUE Hi9.

Look at www.ruffstuffspecialties.com at their fabricated Ford 9" housings. Call Dan and talk to him about it, he's a very nice guy and knows a lot. If you call now I'm willing to bet he will pick up.

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post #21 of 82 Old 07-13-2010, 07:09 PM
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you are on the right track with a hi9 center section. the 9"s have THE lowest hanging pinion of all the axles. but hi9s are 3-4 times the price of a regular 9" third member.

the big question now is: what to run up front to match the width and strength of your rear 9"?

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post #22 of 82 Old 07-13-2010, 07:10 PM
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31 spline is childs play for the 37's you want. Get 35 spline if you really want to build it from the start. Get some lower gearing too. Currie runs 8.8 gears in their hi9. Not good. They also run on the coast side of the gears.
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post #23 of 82 Old 07-13-2010, 07:15 PM
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The ford 9 is over hyped. The only thing good about it is the aftermarked availability of parts, which you will need if you plan on doing anything serious with it. Race cars use them because of the ease of access to the internals. Ford 9"= expensive and heavy. Chevy 12 bolt= equaly strong and cheap. But buy it anyway for 75$, u can turn around and sell it for way more.

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post #24 of 82 Old 07-13-2010, 07:17 PM
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The ford 9 is over hyped. The only thing good about it is the aftermarked availability of parts, which you will need if you plan on doing anything serious with it. Race cars use them because of the ease of access to the internals. Ford 9"= expensive and heavy. Chevy 12 bolt= equaly strong and cheap. But buy it anyway for 75$, u can turn around and sell it for way more.
Exactly.


Apex... read this before you think about putting a Currie HP 9" in the rear:

currie high pinions - Pirate4x4.Com Bulletin Board

SOLDThe lumbering steel-laden pig - 2003 TJ - 40" LTBs - D60/D70HD - 5.86s - Detroit lockers - 110" wheelbase
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post #25 of 82 Old 07-13-2010, 07:20 PM
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Well, what am i saying, the only ones i've ever seen break were behind 600+ hp motors on the strip and totaly stock. Plenty strong enough for wheelin.

"Wheel it, Break it, Build it better." Words to live by.
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post #26 of 82 Old 07-13-2010, 07:40 PM
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For 35" tires, the Currie HP will work just fine. Shave the axle and it has 3/4" more clearance than a d35...
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post #27 of 82 Old 07-13-2010, 07:42 PM
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For 35" tires, the Currie HP will work just fine. Shave the axle and it has 3/4" more clearance than a d35...
He has plans for 37's so then its a crapshoot.
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post #28 of 82 Old 07-13-2010, 07:45 PM Thread Starter
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I would like to eventually run 37s on this axle.

And I lied it looks like a CHP 9" third with a Detroit is about $1600...

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Current vehicles: 06 F250 Superduty - 6.0L PSD Straight piped and tuned
03 CBR600RR -1 +2, Yoshi'd & Battlaxed

Quote:
Originally Posted by bddisi View Post
Finesse in crawling looks way cooler than momentum.
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post #29 of 82 Old 07-13-2010, 07:46 PM Thread Starter
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Originally Posted by flatlander757 View Post
Exactly.


Apex... read this before you think about putting a Currie HP 9" in the rear:

currie high pinions - Pirate4x4.Com Bulletin Board
Reading away...I'll be right back.

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Current vehicles: 06 F250 Superduty - 6.0L PSD Straight piped and tuned
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Quote:
Originally Posted by bddisi View Post
Finesse in crawling looks way cooler than momentum.
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post #30 of 82 Old 07-13-2010, 08:00 PM
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I would like to eventually run 37s on this axle.

And I lied it looks like a CHP 9" third with a Detroit is about $1600...
And how much with the ARB?...
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