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Okay so I have a rear end out of a 85 trans am 7.625 anyone know the spline count on the axles? I know they aren't the strongest but I am looking into getting some hardened axle shafts and I can't remember the spline count, I will be running slicks and the aftermarket control arms in the rear this year and am afraid they might brake. I was thinking about running the moser axles my dad has ran those in his 78 Nova spooled for years with no issue and they seem to be fairly affordable http://www.jegs.com/i/Moser-Engineer...oductId=760995 I think those are the ones but I remember when I got my locker I had an issue with the splines because apparently Pontiac had to do something funky in 85
Also since I am super paranoid I want to get some sort of axle retention device and I was thinking about the disk brake swap will this conform to the IHRA rules and will that be an actually safe option if the axle shafts were to brake. Is there another option for retention I saw a dead thread about getting some for the bigger 10 bolts and drilling them out but didn't hear about the results, what ever is a cheaper better option I don't really care about the disks in the rear as long as I wont loose an axle and munch my quarter panel
With all due respect not trying to flame anyone or anything
But I can tell you from years of money spent on exploding rear ends there is NOTHING GM PUT UNDER OUR THAT CAN TAKE DRAG STRIP ABUSE WITH SLICKS ..I have had my car since new blown up many many 10 bolts nine bolts and Dana 44 they are all junk for drag racing... run anything faster than 13.00 they will not live long no matter what you spend on them..
I am getting ready to buy a s60 strange set up
listen to me spend the money once ..
getting ready to pull and dump this dana44 3:92 that is under the car now !!
Last edited by MY-92-RS; 12-25-2015 at 10:46 AM.
Reason: just because
I know I am actually expecting to brake it ad if I hadn't already geared and locked it last year I probably would just switch to something strong my co-works suggest the ford 9'' because its so easy to change gears but I don't care about that I have the gear I want and won't have to change it is there a less expensive option that's just as strong or stronger or something that is compatible with my true track locker for the 7.625. for the time being though I want to try and prevent it from blowing up/ preparing for it
Did you already buy the true trac?
They come specific for 26 or 28 spline axles.
The 3rd gens had 26 and in 88 or 89 began using 28.
Also check what gear ratio / carrier it needs... you need a specific differential (true trac) and specific gear (2 or 3 series) to work / fit (if you were deciding on mixing and matching).
I spent a lot on my 10 bolt 7.5... but not ever going to put slicks on it...
If slicks / drag are your goal, I would take the advice of post 2... Spend it once..
yeah I bought the true track I had it and gears installed that year which is why I don't want to give up in this axle yet. I went with the tru trac after I had busted through 2 mini spools
If you are using the stock axles, then they are 26. And your Truetrac will only work with 26 axles. I don't recall seeing aftermarket 26 spline axles, but I could be wrong. most people have better luck with an automatic, as opposed to a stick shift which is harder. Drive it like you stole it and then save up for something really nice.
Swap up to a new rear end... the 26 axles are weaker than 28 and as noted in 2nd posts... 10 bolt and drag slicks will eventually break... Check out the trans section / search for advice...
http://www.summitracing.com/parts/ms...t/model/camaro there are some 26 spline ones I think I will give them a try and see what happens I would still like some sort of a retention device just in case is there any other option besides disk brakes?
It's been discussed many times on many different forums. To make a 7.5,7 5/8" rear live you'll need to
1-weld axle tubes to center section
2-Set it up with a solid pinion spacer...no crush sleeve
3-Use a stud girdle cover
It will hold up with quite a bit of abuse, I've personally seen a flat 7 sec (1/8th) S10
running the 7.5 and he told me it was his 4th season on that rear, first 3 were on stock axles.
Some people buy ARP Studs for main cap ends....
The "girdle" is just the cover... the aftermarket ones are more rigid, hold more fluid (better cooling)... I got one LPW with tubes welded...
I've seen a lot of these covers with the extra support bolts for the caps, but I don't recall seeing one with these spherical rod end/bars on it. Are they just for "extra" support of the cover to the axle, to prevent the cover from flexing backwards?
Ideally, yes... the tubes want to bend toward towards the front of the car when accelerating... These tiny steel tubes keep all the monster HP and TQ in check
I don't know how much stronger it actually makes it though....
Hi new on here but have some insight. If you want to go for the most cost effective a ford 8.8 is easily fabbed up to fit into any 3rd/4th gen. I ahave done so myself and it cost me 250 and 2weeks of fab to make it all work. As for splines anything that comes out of a mustang SN-95 style will have 28spline but if you find the carrier from an explorer or such they use 31splines. I am going the route of a full locker c-clip elims and 31 spline axles and it should work out nicely. If you need pics or tips just let me know.
Im assuming you mean 10bolt and not talking about you converter. Thats the way to go if you have the money for sure no trial and error. I had to mess around with ideas for the torque arm bracket for the 8.8.
Im assuming you mean 10bolt and not talking about you converter. Thats the way to go if you have the money for sure no trial and error. I had to mess around with ideas for the torque arm bracket for the 8.8.
Btw car sounds awesome!
Yes, sorry that is what I meant, 10-bolt. All factory with the exception of ring & pinion. I'm surprised it hasn't blown yet.
No, problem just wanted to clarify. Thats suprising especially considering running a 406, i went through a stock set of gears then when i put 4.10s in literally lasted not even 200miles and the clutches, springs exc. exploded gears where un harmed not even a nick to my suprise. On radials that all happened none the less.
12-25-2015, 01:13 AM
