| FAQ |
| Members List |
| Social Groups |
| Calendar |
| Search |
| Today's Posts |
|
#1
05-15-2008, 11:06 PM
|
|||
|
|||
Rear shock mounts
I put in new air shocks this weekend. The rake that I want to get means that I need to fill the shocks way up. The ride it really hard and it feels as if the car bounces. See the pic below. There is a hole right above the one that I mounted the shock into.
Whats it for? Can I use this?? If so, will I be able to lessen the air in the shocks and because its mounted an inch or so higher, will it raise the car thus giving the car a bit of a softer ride becuase I dont have to fill the shocks as much?? 
|
|
#2
05-15-2008, 11:43 PM
|
|||
|
|||
|
you can use either hole.
|
|
#3
05-16-2008, 09:07 AM
|
||||
|
||||
|
Back in the day (1968) I used the top hole to mtd a set of coil over shocks on my 66 goat. Using this hole will raise the rear of the car higher. I did this because I use to bottom out when someone was sitting in the back seat. Gave the car a nice look, and was a better ride.
|
|
#4
05-16-2008, 09:51 AM
|
||||
|
||||
|
I would think the upper hole won't buy you anything because the amount of force required to raise the car to the level you want is the same; therefore the same amount of air pressure is required. The position of the internal piston in the shock will be different, but the damping will be the same.
Air shocks are a band aid. I went thru the same thing...what you need is a different, taller, spring that has the same spring rate, thereby raisng the car but not stiffening the ride. Standard shocks can then be mounted in the upper hole since the increased ride height would extend the shock too much when the lower hole is used. That's my take.... George
__________________
"...out to my ol'55, I pulled away slowly, feeling so holy, god knows i was feeling alive"....written by Tom Wait from the Eagles' Live From The Forum |
|
#5
05-16-2008, 09:58 AM
|
||||
|
||||
a set of Airlift bags will raise the rear of the car as well and ride better!
|
|
#6
05-16-2008, 01:56 PM
|
|||
|
|||
|
George: Thanks for your response. Better springs would be a better fix, but I have to work with what I have. The old air shocks (very old) went south last week and bottemed out the car.
Pont406: No budget. So I guess its not worth the effort to try it out. |
|
#7
05-16-2008, 09:37 PM
|
||||
|
||||
|
Station wagon springs, Paul. Only about $60 for a set. Let me know if you need a part number.
|
|
#8
05-16-2008, 10:50 PM
|
|||
|
|||
|
Quote:
|
|
#9
05-17-2008, 07:51 AM
|
||||
|
||||
|
Here's a post from a few years ago.... hope this helps Paul. I didn't get them from PY... any parts store that can get TRW springs can order them for you.
 FB66 Here are some pics of my 66. The springs are TRW CS5235 and the shocks are KYB KG5507 gas adjust. Just for reference the springs have been in there for 8 years now and the car has between 3/4 and a full tank of gas in it. The wheels and tires are 14X7 rims and 215-70-14 tires. And to your earlier question, yes coil springs do go bad over time. The car has probably "settled" about a quarter inch since i put the springs in. Hope this helps, reguards RichAttached Thumbnailshttp://forums.maxperformanceinc.com/...1&d=1150335233 http://forums.maxperformanceinc.com/...1&d=1150335233 http://forums.maxperformanceinc.com/...1&d=1150335233 |
|
#10
05-17-2008, 12:42 PM
|
|||
|
|||
|
actually changing the length of the shock will affect the ride quality. since the shock is hydraulic to start with, it has a certain amount of damping. if you shorten the length and in this case the angle by changing mounting point, to raise the car to a given height, it will take less air pressure to move the piston since the length is less. just like a lever lifts a rock, you have changed the fulcrum point as well as the length of the lever (the force) needed to move the rock the same distance. So less air pressure, means softer ride.
|
|
#11
05-17-2008, 09:08 PM
|
||||
|
||||
|
I've got both air bags and air shocks on my 66 and the ride doesn't suffer. I actually like having both. They were originally used to give tire clearance for a set of 275/60 15s that rubbed on the fender lip occasionally.
 I might ahve said a different size before but I just dug one of them out today to check what size they were. 
__________________
 Gary Get in, ShuT Up, Hang On! Member of the Baltimore Built Brotherhood MY GTO built 4th Week of March 1966 "Crusin' Is Not A Crime" Keep yer stick on the ice. |
|
#12
05-18-2008, 01:31 PM
|
||||
|
||||
|
some else asked about the hole a while back im goin to see if i can find the link for the other topic
|
|
#13
05-20-2008, 10:28 AM
|
||||
|
||||
|
Paul
Moog #5399 is the station wagon rear spring for a 67 GTO, that is what I had in mine. Should be less than $100 and and easy install, add some basic shocks and you will be around $100 and have a great ride along with the stance you want. Bob
__________________
67 GTO Hardtop |
|
#14
05-20-2008, 05:17 PM
|
||||
|
||||
|
Quote:
Paul, you ought to be able to get those wagon springs for about $60 @ Napa, or online. Definitely the way to go. I've always liked the rake on your car as it was.
__________________
1967 GTO Tyrol Blue/Blk Cordova 400, TKO-600, 8.2 Posi w/3.55 400 + .020, decked to .005 SD Performance 240+CFM 670 heads RARE HO/RA manifolds RARE 2.5" Exhaust (18" Magnaflows) SD "Stump Puller" HR cam (230/236, 112LSA, 107.5 ICL) PRW stainless 1.52 roller rockers Forged TRW slugs SCAT H-Beam forged rods |
|
#15
05-20-2008, 07:57 PM
|
|||
|
|||
|
Quote:
Bob did sell his car. I think he bought a Vette. |
|
#16
05-20-2008, 09:32 PM
|
||||
|
||||
|
Paul..I also have a '66 LeMans and bought '66 station wagon springs for it. Worked out great. Provides the perfect amount of rake and the bonus is, I can fill up my trunk and put two people in the back seat and it will not bottom out. In fact, very little sag at all. It's a good soultion...think you'll like it.
good luck.... |
|
#17
05-20-2008, 09:47 PM
|
||||
|
||||
|
Here's my car with the station wagaon springs....gives you an idea of the ride height....
|
|
#18
05-20-2008, 10:19 PM
|
|||
|
|||
|
Quote:
Yours is perfect and a really nice looking car. Thanks for the post. |
|
#19
05-21-2008, 12:05 AM
|
||||
|
||||
|
I'm not sure,but,I think the upper hole was used for mounting of the shock or a bracket for the air shock option offered by GM.
|
|
#20
05-21-2008, 04:10 AM
|
||||
|
||||
|
The best option is a spacer under the coil spring. This will not change the ride characteristics at all. Granted, the 67 is much easier to pull off since the spring cup is smaller and easier to adapt the spacer. You can make or have a machine shop make a spacer by using round tubing on the bottom that just fits over the bottom spring mount, a flat circular 1/8" plate steel, and a top piece of round tubing that just fits inside the spring. Top piece can be an inch or so high, and the bottom piece can be whatever height you want to raise the rear of the car. A two inch high piece of tubing will raise the car 2" over the axle and a little more at the bumper. Weld the three pieces together and insert them and you're done. Then you can run your air shocks or air bags at minimum inflation and have a much better ride. I've run similar spacers on my 67 GTO since new since I always hated the tail down attitude GM seemed to go for.
__________________
Mick Batson 1967 original owner Tyro Blue/black top 4-speed HO GTO with all the original parts stored safely away -- 1965 2+2 survivor AC auto -- 1965 Catalina Safari Wagon. |
| Reply |
|
|
The PY Online Forums is the largest online gathering of Pontiac enthusiasts anywhere in the world. Founded in 1991, it was also the first online forum for people to gather and talk about their Pontiacs. Since then, it has become the mecca of Pontiac technical data and knowledge that no other place can surpass.
Linear Mode
