|01-17-2010 08:30 PM|
|01-16-2010 11:44 PM|
|SSedan64||I've used these before>> http://cgi.ebay.com/ebaymotors/64-72...item3ca93c852c may find them for G-Body also. 14ga. or thicker steel.|
|01-16-2010 10:43 PM|
Awesome thanks for all the replies everyone!! I think for now I am gonna just box in the control arms and leave the 7.5" rear end in the car. I am sure down the road I am going to swap in a 9" or maybe even the 8.8" to handle a little bit more power reliably. I will post before and after pics of the control arms when I can get all the snow out of my way to unbolt them.
What thickness steel should I use?
|01-15-2010 10:36 PM|
I keep forgetting about the 8.8" swap Eric.
Here's lots of Info/links on that swap>> http://www.maliburacing.com/forum/vi...hp?f=4&t=72070
|01-15-2010 08:05 PM|
|ericnova72||You might want to investigate the 8.8" Ford Fox Mustang rear swap, this is starting to get popular and supposedly is fairly easy to do, pretty much a bolt in with the right arms. The 8.8" is quite close in strength to a GM 12-bolt.|
|01-15-2010 07:25 PM|
If you install a OEM GM 12-Bolt you'll need aftermarket Upper Control Arms as the mounting angle is different.
G-Body Rear Swaps >> http://www.maliburacing.com/tech_rearend_swaps.html
G-Body Tech>> http://www.maliburacing.com/tech.html
|01-15-2010 05:46 PM|
|zildjian4life218||Now what is the price difference in after market support from the ford 9" housing to the gm 12 bolt?|
|01-15-2010 03:25 PM|
You can also buy prefabricated GM 12-bolt housings to fit right in there from several sources too.
The rear sway bar for my Malibu came with spacers to fit inside the original lower control arms, all factory original pieces. The most common cheap fix for the strength upgrade of the lowers is to tack-weld pieces of pipe inside the arm to prevent the arm from getting crushed by some torque happy person installing the swaybar bolts, then welding a piece of 1/8th inch flat steel to the open area of the control arms, and make sure you complete the job by making sure the bushing ends are welded to the added piece of steel.
Another commonly used strength add-on for the 7.5 inch axle is to drill and tap the ring gear bearing caps, and housing for larger/higher strength bolts, then you can also add to that modification by purchasing a cover with the bearing preload studs and nuts to assist in spreading the load to the housing better.
Another thing I have seen a lot is mark your axleshafts and prep them to paint a stripe the length of the shaft, Many racers do this to check how much their axleshafts have twisted, I have seen pics of up to nearly a full revolution of twist without them failing- and they were reported to be stock shafts.
|01-15-2010 01:02 PM|
|zildjian4life218||My dad did urethane bushings a while ago. The car does have some wheel hop every now and then when you do burn outs.|
|01-15-2010 12:25 PM|
|Rickracer||Yep, and the best part is that's pretty cheap to do. Urethane bushings are a good idea as well, if you can afford to do them at the same time. The boxed arms and bushings should give you considerably more decisive handling and traction, especially if you've got rear sway bar on there.|
|01-15-2010 11:42 AM|
|zildjian4life218||Alright sounds like I will just have to keep street tires on the back until I get a chance to put either an 8.5" GM rear end or a ford 9" in it. But for now it seems like pulling out the control arms and boxing them in will be the best to do.|
|01-15-2010 10:22 AM|
You really need a jig for narrowing the housing, to make sure it's straight. I know guys running as much as 450 fwhp on S10 (7.625", 28 spline) rear axles, but they cross their fingers a lot,
Up to about 350 rwhp, no trans brake and no slicks, you're fairly safe.
|01-15-2010 10:07 AM|
|zildjian4life218||I will def consider getting a hold of a prefabbed 9". How hard is it to cut, chop, and weld the rear end to fit. My neighbor is one hell of a machinist and makes all sorts of crazy stuff for his race car. If I could buy a 9" housing and then give him a couple hundred bucks. We would have to cut the axle housing to the correct length. And then weld on 4 places for the control arms to hook up to. Doesn't seem like it would be crazy hard to do just have to make sure everything is straight. What is the approx hp limit for the gm 7.5" axle?|
|01-15-2010 05:41 AM|
|01-15-2010 05:25 AM|
|1ownerT||It depends on how well it hooks up.|
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