I spent a bit of time today with the very helpful local GM dealer parts person.I decided to start looking for these bushing's as per Larry;


Where I could not get MC parts, I went with the Grand Prix parts. In some of the positions, I stiffened the lower part a bit since I have a little more HP and wanted it a bit firmer ride. Since GM had a pattern of having positions 3 and 6 lowers a bit softer, and since I had the parts, I went a little softer there.

Here are my choices:

position----upper----lower
---1-------457915----348080
---2-------330986----457915
---3-------330951----377801
---4-------330951----457915
---5-------556755----none
---6-------348080----377801
---7------1242754----457915

I believe all the parts I chose are all still available. GMpartsdirect.com, oepartsource.com, discountpartshub.com are all potential sources. I would note that you will quickly find Dixie's price a decent one IF you have to order in ones and twos and pay shipping from each source. Try and bunch up your order as much as possible.

Hope this helps.

The 457915,330951,1242754 and 556755 bushings are discontinued from GM.I also checked the local NAPA store,and they apparently dont carry them.
Guy

So far all I can find is this bushing kit from Gbodyparts.com
http://www.gbodyparts.com/product_info.p...314c198b177c6a2
I wonder how they compare to the list above ???
Guy

DixieMonteCarlo has the complete original body mounts for $400

http://www.dixiemontecarlodepot.com/items/DM94016.htm

Mikesmontes has a set

http://www.mikesmontes.com/proddetail.asp?prod=640
that you add the core support to
http://www.mikesmontes.com/proddetail.asp?prod=802&cat=2643
The core support looks like OEM with the cup for 79 to 86. Not sure about the rest of them. $245.

I think the GNX kit is OEM for a Buick Regal. The pic has a lot of parts. You would only get 26 bushings. In general the Regal would be softer than Monte or Grand Prix, I THINK. For example, I reused the Monte body mount for position 5 (over the hump) because it was in great shape and was harder than the regal body mount I bought. If you read the thread again you would find opinions on the hardness of various body mounts. Note that harder is not always better. It depends on what you are wanting (noise, hardness, vibration, cornering, etc.)

Hope this helps

You will probably need bolts as well. Don't forget to get the ones you need.

It would appear from the pictures that the set from Dixie is the more complete set,but I will send Mike an email and find out if his set is complete except for the core support ones.It doesent look like I will be able to get exactly what Larry has in the list above.
Guy

Mike emailed me back,his set is complete except for the core support ones,but they are not genuine GM parts,they are harder than OEM.
Guy

Dixie also has a set of aftermarket bushings,a little cheaper than Mike;
http://www.dixiemontecarlodepot.com/items/DM94116.htm
Guy

You can find the red or black polyurethane bushings in various places on the cheap if you want those. They are a reasonable choice. They are harder and will have more vibration and noise as a result. It is all in what you want and how much you want to pay. Here is an example from Summitt.

http://www.summitracing.com/parts/ENS-3-4141R/

I've considered the poly bushings,but the increase in vibration & noise doesent appeal to me.So I will probably go with the rubber ones in the spring.
Guy

i have to say i have solid aluminum mounts on my monte ss and the car rides nice and i couldn't notice a difference!!

Hi Monte,

You mean you replaced all the OEM rubber bushings with aluminum, and didn't notice a difference? Sorry, but I'd no sooner believe that than I'd believe we were all wrong all these centuries, and the earth really is flat.

Surely I'm not understanding your post correctly?

Best,
MAP

The rubber acts as an isolator between the cabin and frame. So with that you had to feel and maybe even hear a difference.

I have been planning a rear frame rail repair job. So basically I only need 4 body bushings( 2 on either side). I located the bushings useing the part numbers in this thread.
However, the One thing left that I need is a part number for the metal sleeve that goes in the bushing.( Doesn't look like the sleeve comes with the individual bushings). Either part numbers or the dimensions themselves would be appreciated. Heck if someone would take the time to accurately measure those sleeves I would PAY THEM FOR THEIR TIME. No Bull!!!!!!!!!
thanks

The bushing is rubber with a metal collar embedded in the rubber. When I removed some of the bushings, they had disintegrated to the point that the rubber and the collar has separated. I would suggest that if you buy the bushings they come with the sleeves in them.

Buried in body there are special nuts. There was a special nut that had a long neck on position 3 for our car that I had to replace by cutting into the rocker panel and manufacuring a nut and plate. I also know that prior to 87 there was a metal cup in position 1 (the core support).

Look at the charts in this post - you will see that in most positions you only have two body mounts and a bolt. Some have a washer.

Guy,
I noticed that the #5 location dosen't have a lower bushing part number. Is that because it's no longer available or beacause none was installed there from the factory to begin with? Do you know if those parts numbers you listed are still available at this time? Thanks in advance .
Nick

There is no lower bushing for position #5. There is no bolt for position #5. It simply sits in a hole on top of the frame and the body sits on the bushing.

Where can I get a bolt set on the cheap? I'm pulling the whole body off the frame to put it on a rotisserie & I'm replacing all of the bushings with the Energy Suspension set listed above & I'd like to get brand new hardware. All of the bolts look pretty rough.

Back a few pages was this post:

The bolts are:
Position 3 = M10x1.5x55 - grade 10.9 GM part 14085301
Positions 2, 4-7 M10x1.5x80 - grade 10.9 - GM part 12337833
Position 1 = M10x1.5X95 - grade 9.8 (grade 10.9 will work)- GM part 10049638

From looking at the chart I think the washers are .515X1.56X.19. Had to squint and my shop manual does not show the sizes like the chart from above.

Dealership, NAPA or hardware store can get you the right bolts. Make sure they are the right hardness. I actually found these bolts by the pound at Shoppers (a Hardware Hank affiliate).

GMpartsdirect show 12337833 can be had for .78 each, 14085301 for 2.60 each (pack of 5 min), 10049638 for 2.52 each plus shipping (25.84+shipping). List price for each is 1.33, 4.37, and 4.25 respectively so for $30.54 plus tax you could buy for less locally.

Dixies has full set of bolts and washers for $70. Kirban has the bolts only for $28--however they list the bolts as 8.8 strength.

Since this time, I think that 10049638 was hard to get except from GM and they were being discontinued. The other ones should be able to be found at a bigger hardware store like a Shoppers.

The bolts that Kirban shows are for the 1984-1987 Turbo Regal. Will they jive with the ones off the Montes of the same year? Also, you say they list them as 8.8s. Are you insinuating that they should be of a different grade?

I plan on using the Energy Suspension bushings and just need the bolts, so I am trying to avoid getting the whole washer and bolt kit because the Energy bushings come with the washers. Thanks!

Hey Jason,the bolts are the same,same frame ,etc...The only reason you will need to replace the original bolts is if they are rusted beyond use or if they break upon removal.If they are in good shape,theres no reason they cant be re-used.
Guy

Okay, how is it even possible to put solid mounts throughout this car, which handles like a bowl of spaghetti and NOT notice a difference?
That being said, is it possible to run the aluminum mount in the 1 and 7 location and still maintain the OEM or grand prix bushings throughout the rest?

Hi One,

Always avoid direct steel/aluminum interfaces because of problems with galvanic action. Other materials (Delrin is my favorite) can give equivalent performance with zero trouble in this regard.

So, your question really is, "Can I use solid bushings at #1 and #7 and OEM everywhere else?" To which the answer is almost certainly yes. Just watch for cracking at the tops of the A-pillars, since solid bushings transmit more stress into the body.

Best,
MAP

The tops of the A pillars have alot of solder and bondo from the factory. G bodies have alot of filler in them that is prone to cracking.

thanks for the info.

map, i was not kidding when i said i noticed No difference in the ride qaulity between aluminum and the stock body mounts on my malibu and my monte ss. please keep in mind that neither of these cars are every day vehicles!! when i finally do a everyday monte , it will not have solid body mounts! and by the way , when did they figure out that the earth was round!! just a joke map and thanks for the great info! i may yet pick your brain on some other subjects if you dont mind! thanks george!!