Hi,
After installing my new 12 bolt i am getting a fair amount of wheel hop on fast takeoffs and burnouts. What would be the best solution to this in terms of effectiveness first of all, cost, and ease of installation? What are the best brands of anti-hop bars and where would be a good place to purchase them?
P.S. I know there are a few other posts about this but i was having trouble finding a deffinative answere.
Thank you so much

You'll probably get 2 very good but different options:

1. No-Hop Bars, like the one sold by Edelbrock. I have them installed on my car, but the car isn't finished, so I have no idea if they're any help as of yet. They required two holes drilled in the webbing of my 12 bolt and I had to do some grinding on the driver side bar. The no-hops alter the location of the upper control arm mounting points on the rear end. The problem some have encountered is after the install your pinion angle may be drastically altered, and the only solution is the fork out for adjustable upper control arms ( which Edelbrock does not mention anywhere in their literature ). Once I get my motor/trans back in and tighten my suspension up, if I have the same problem, they're coming out. Right now my pinion is pointed straight ahead, so I have to wait to get the full weight of the car back on the suspension to see if it moves again. Initially, the pinion was pointed upwards, and my rear springs weren't even sitting correctly on their axle tube perches. They are now, as it settled quite abit.

http://store.summitracing.com/largeimage.asp?part=EDL-5213&Prod=Edelbrock+Anti%2DHop+Bars&img=edl-5213_w.jpg

2. SSM Bars, which are now sold by companies like Jegs ( I believe they're called Jegsters ). Easier install as they relocate the the mounting point of the lower control arms on the axle tubes.

http://www.jegs.com/webapp/wcs/stores/servlet/ProductDisplayPopup?storeId=10001&partNumber=550-41046&langId=-1&showValue=1

2 different ways to tackle the same problem, but giving you the same result, helping plant your tires to the ground.

1: Lower your car

2: Lift bars from UMI if close to stock height

3: No-hops from Edelbrock if your car sits higher than stock.

Joe,

Derek is somewhat of a suspension guru around here, and his advice is very sound.

You also want to make sure that your lower control arms are straight as in no angle up or down. I have the Eddy's and they work well. I did have some vibration after installing but I cut my springs to lower the ride height to get the lower's set as mentioned above and it seems to have got rid of the vibration.

Here's a drawing I did a while back... sorry it's a little hard to read. Chevelles.com showroom software automatically re-sizes any uploads.

http://www.chevelles.com/showroom/data/516/Rear_suspension-Model.jpg

Wow thank you guys! Anyone have expirience with Lakewood No Hops? Are they better than the edles? Do they need adjustable control arms? Also any expirience with the Jegster lift bars?
Thanks again guys

Joe,the Jegster lift bars work great at increasing traction and eliminating wheel hop.

you cant go wrong with the eddy adj. upper arms

I ran no hop bars with stock uppers for about 15 years. Worked great. Only thing is when I didn't have good shocks in they hit the bottom of my trunk pan and put a couple of good dents in it.

I haven't used the lift bars, but they would be easier to install, since you don't have to drill anything, and they wouldn't cause any potential clearance problems. Plus, they have new bushings, which is nice, since you want to upgrade to poly bushings. (Though I don't know if they come with poly bushings; I would think that they do?????)

I have the edl adj uppers now, and they are VERY nice. They come with a nice bushing for the housing, too, and are double adjustable.

You should also get the edl tubular braces (that's what I have). These three things will make a big difference, IMHO.

All of this stuff is VERY easy to install, and the edl uppers come already adjusted to stock length, though you will want to verify that.

scott

Wow thank you guys! Anyone have expirience with Lakewood No Hops? Are they better than the edles? Do they need adjustable control arms? Also any expirience with the Jegster lift bars?
Thanks again guys

Lakewood no-hops have no bushing at all, just metal on metal. Edelbrock's have poly bushings. Edelbrocks are also taller than Lakewood's, which can be good or bad depending on ride height.

I would recomend Edelbrock's adjustable upper arms with spherical Johnny-Joints no matter what setup you choose. The Sphericals eliminate some of the bind designed into the suspension setup (bind is bad) and they make driveline angle adjustments very easy. :) If you're making big power I'd then look at the similar (but much stronger) arms from Currie.

Ride height makes a big difference on which option is best.

Derek or others, what do I need to know about pinion angle to get the edelbrock no hops installed correctly? My car sits high and has wheel hop and makes about 400 lb. ft. TQ (crank). I know the best approach would be to lower the car, but I am not ready to give up on the stance yet, I just like the look. Anyway is there a primer on pinion angle and how to set it up right? Thanks-David.

What Dan said. If you use the Edlbrock no-hops, might as well buy the adjustable upper control arms at the same time. Original upper length pushes the pinion up way to high, even pulls on the brake hose. Adjustables brings it back down but on my 67 even adjusted all the way the pinion angle is just 'OK'. Car is up in the back just a bit (sorry Derek) but I like it that way (old school stuff).

But the wheel hop was gone. Actually after this summer I might remove the no-hops and try just the adjustable uppers to get the angle right. After reading many threads before doing this last year, it seems the pinion angle is the main thing and the adjustable uppers might solve it by themselves.....

Mike

I have the SSM lowers and Uppers, as well as the stock GM Anti-Hop Bars, and I have never had any wheel hop problems. I hope I didnt just shoot myself in the foot now with the 4speed and other work I have done to the car over the winter.

You may want to look at these also. Link: http://www.lonniesperformance.com/metco.htm
They also make upper control arms.

i put a new 12 bolt in with new hotchkis uppers and lowers and new malibu wagon rear springs and this thing plants the tires awesome with 0 wheel hop!