Alf Wiebe A body rear control arms
I installed the Alf Wiebe rear springs and shocks from the rear suspension kit in my '68 Chevelle stocker.It definitely straightened out the launch by eliminating the corkscrew tendancy of these cars. I want to install the lower arms and the upper wishbone assembly so as to properly preload the chassis and center the rear end housing(it's a 12 bolt), but now I hear that the set up is either illegal or soon to be. There's at least 10 Chevelles running this setup that we know about, and Tony Janes and I are a little put out that we can't use it,especially after one is on his car. I haven't seen any posts or official response yet. Anybody out there know about this?These kits have been out 10 years or so,they are excellently engineered and constructed,and I would like to use it.
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Re: Alf Wiebe A body rear control arms
Your racer info says you're from Glendora Ca.Can't you just walk over to HQ and inquire?It's only a local call on the land line.Just kidding ,couldn't resist.
I heard that the Weibe setup was going to be outlawed in Stock.Good for a few years then all of a sudden it's illegal.Go figure. Ed F. |
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Why ?
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Is a Moser 12 bolt legal? HRpartsnstuff bolt on antiroll bar? Who needs Alfs?
http://img4.glowfoto.com/images/2008...100349432T.jpg |
Re: Alf Wiebe A body rear control arms
Maybe it isnt going to be legal any more because its not available to the masses any longer?
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Last I heard, you can buy Alf's stuff. So it is available. It is bolt on as well.
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Re: Alf Wiebe A body rear control arms
Ed- Thanks for the reply.Yes I have gone to headquarters for things in the past-it's a mile from my home.I was told recently that another division's tech person didn't like the setup because he stated that it is an adjustable lower control arm,therefore illegal.This happened in the last six months or so. I'm concerned that this may become national policy affecting all A body stock racers, and I haven't heard any official answer. I would hate to see all of us have to remove them after buying,installing,and sorting them all out. I'm keeping an eye on this.
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72 Malibu-It seems that a factory anti-roll bar was a factory option on a lot of these cars. Your set up looks pretty close to OEM from what is shown in the photos of the green car. (Nice launch!)If my car left like that,they would make me get a pilot's license!
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Re: Weibe Jeebies
I was told ,years ago, by Wesley, that you couldn't add an upper or third attachment point to a Stocker suspension. That, that would constitute a ladder bar. Slapper bars are considered to have two points.
It seems to me though, that wouldn't be the main point of contention with the Weibe system. Tell me, Where is the front lower pivot point on that style trailing arm? |
Re: Alf Wiebe A body rear control arms
Its the Wishbone you can not use.
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Thats the famous "Green Weenie", The "Green Weenie" is a 9 second Chevelle. Oh, and the "Green Weenie" doesnt have a transbrake in it either, its a street car |
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Mark, I think that the lower front pivot is what Tech has a problem with. What I have a problem with is why did they allow it for X number of years and then decide to not like it?
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Looks like the green weenie could use alfs front end kit .
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The "Green Weenie" is not light (as some seem to think it is) and is a "Street Car",,, Not a class car and it hooks darn good, In my opinion it is one of the best working factory suspension Chevelle's out there Here is a Video of a 9.996 pass from a "Street Car" http://www.youtube.com/watch?v=SwrHEfML3uw |
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My question- Does a 70 Chevelle LS-6 car make AA/SA? Wouldn't that be the ultimate test of all this?
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ball joints custom,tie bars and bull nose afcos.
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Well, the rule book for 2008 says,"Rear trailing arms may be replaced with NHRA accepted OEM type aftermarket units.Aftermarket lower unit must be non-adjustable and have bushed ends(no heims).Aftermarket upper unit may be adjustable and use heim ends instead of bushings." I guess the purpose in that is to prevent even the appearance of an alteration in the wheelbase of the car.The Alf Wiebe set up allows for centering the rear end housing, and adjusting the differential pinion shaft angles. It also allows for suspension preload up to a point. Another thing,how many 64-72 cars of any make all have a square frame after this much use and years of abuse? Drag racing isn't exactly easy on things.Tony Janes had a discussion with some tech people and apparantly, an official word is forthcoming, probably by the start of next season.Hopefully,unanimous interpretation of acceptance of what constitutes compliance will be the result.
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But I'd be pissed if I owned the Wiebe system and they ended up making it illegal. Please keep us up to date on this, I am going from a powerglide to a th-200 this year and want to do some suspension work to keep up with the harder launches. Looks like i'll be ordering a roll bar for HRpartsnstuff... |
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72 malibu that is one bad street car. It is still not a stocker. The A body is one of the toughest stocker to run for two reasons, one is the rear suspension and the other is that the motors are some ot the most powerful in stock. Traction is the issue with 9 inch tires. The 1970 454 is so powerful, I elected to stay with a L78 402 in my stocker.
Alf builds one system that works with the high power A bodies front and rear suspension. It really works. The A body twist is eliminated. The cars hook in most car washes. His front end kit makes the car faster. On the launch, the front tires don't look like a duck and scrub off speed when they land. An A body has the upper arms tilted backwards for anti dive. The front is up in the air at the top end catching air. His system takes out the anti dive and increases the aero dynamics. When I changed to his new system last year, I gained 2.5 miles per hour in the traps. I have run a rear Weibe system since I started running my A body 6 years ago. The only reason to not buy one is that you want to have the pride that I designed my own system or I don't have the money to buy a complete system. I just figured how many years can I race? I want my car to run. I don't need to reinvent the wheel. He builds a proven system. If you ever get to spend time with him, he is as straight a person that you will find. He will help you at his own expense. What a great guy. Rick Kagawa 708 C/SA http://www.dragracecentral.com/DRCPh...r=100#indextop |
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Thanks Rick. It appears that I still have some work to do on the front suspension.
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I saw this car run at Mokan. Impressive. How big is that motor?
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Thanks...Its 505 cubes, 10.5-1 compression, dual plane intake, 1000hp carb.
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I still can't figure out how NHRA ever approved the Wiebe suspension system for Stock Eliminator.
I've got the rule book here and it clearly states the lower trailing arms must be non-adjustable and have bushed ends, no heims. Upper is allowed to be adjustable and have heim ends, but not the lowers. The Wiebe lowers have heims and are adjustable making them illegal the way I read the rules. Also, the rules state that the upper rear housing attachment point may be relocated, but it doesn't not state you can on the lowers (Alf system drops the lower front bolt below the frame with a bracket), clearly a grey area in the rules. |
Re: Alf Wiebe A body rear control arms
If I'm looking at the pictures of Alf's stuff correctly, the ends of the lower bars do not have spherical rod ends, nor are they adjustable. Now, there are other brackets on those arms that have solid rod ends that are adjustable, but the ends of the lower arms where they attach to the frame bracket and where they attach to the rear end housing have bushings and are not adjustable. The attachment point at the front of the lowers is possibly a gray area.
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"The attachment point at the front of the lowers is possibly a gray area. "
" I did not have sex with that women" |
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The front attachment point is kinda sneaky. The original bolt hole in the frame is not the front pivot point. There is a bolt there, but the control arm has a larger diameter "hoop" which at best is a safety loop. The actual attachment point is a heim end that hangs below the frame. Any heim is considered adjustable in my mind.
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A local Chevelle racer showed me an updated version of the Alf Wiebe lower control arm which had the lower attachment point relocated to the original location through a bushed hole,no heim joint.That revision should fly because the arm is no longer adjustable,and the heim jount is at the upper rear attachment point like the others.This facilitates pinion angle adjustments. It would be fairly easy to update the earlier bar assembly to this configuration. Seems to me that the bushing centers were 22 inches apart on the stock lower control arm. All the upper wishbone does is locate the centerline of the rear end from side to side. It does use the stock upper frame brackets and bushing locations on both the car's frame and the axle housing.Hopefully, an official word will be forthcoming soon. Neither car that we are planning to run at Winternationals has the Alf Wiebe arms installed yet, so we'll see what happens then.Hopefully,we can continue to use them after a small modification.
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Greg, Do you mean that the front pivot point is now located back at the original frame bracket and hole?
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Mark-- Yes,the one shown me at the Fontucky Sports Nationals was just like that.It had no lower bracket or lower heim joint. Oh,yes.No offense intended to the inhabitants of the beautiful green state of Kentucky. If you want a real cultural awakening of shocking proportions,drive just north of the track through the residential area .
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Near as I can figure, Alf musta seen the handwriting on the wall. I'm surprised the original design has been okay as long as it has.
You know ,when those things first came out, there was an article in SS &DI on Alf's Buick, by Wayne Scraba , who was the ND tech writer too. That's probably why nobody from NHRA looked at them closely. After seeing the article, I couldn't figure out how the things could work . Later I found out there was a certain little part omitted that couldn't be seen in the pictures. |
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Is there a link to what this looks like?
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Do a search, there's a pair of pics posted in this section.
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I searched for pics and found none on here.
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