'72 Greenbrier Wagon Project - Page 3 - Chevelle Tech
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post #31 of 91 (permalink) Old Mar 13th, 18, 5:41 PM Thread Starter
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Re: '72 Greenbrier Wagon Project

Quote:
Originally Posted by concours wagon View Post
Body bushings are't bad to do. Loosen all of them but only remove the bolts from one side at a time. After replacing all of the bushings place 5/8" diameter rods or dowels in the alignment holes and then tighten all of the bolts.

There are 2 alignment holes on the drivers side identified by the slots in the hole on the frame. One under the cowl and the other under the rear door area mount.

From the bottom it looks like this



From the top of the frame to give you an idea of where they are at

Front



Rear



And inside the cowl mount box, under the leaves

Nice, thanks for the pics. I did the body mounts on my 71 when I first got it. The frame's holes were abit worn out from rust and a couple cage nuts were spun. Ended up getting some 1/8" plate and making "washers" then welded them to the frame. Quite an undertaking for a first project.

Hopefully this frame will be in better shape . So far it appears in pretty good shape really. I used the poly mounts before. Might try the polygraphite this time.

'71 Malibu
3580 #, Carbed 6.0l LS swap in process
T-350, PTC 9" converter, 12 bolt, spool, 3.90 gears, MT ET R 275/60/15

355 tim[email protected]
125 [email protected]
383 Mud Motor- [email protected]
100 shot [email protected]
'72 Greenbrier Wagon: 454, 700R4, 12 bolt with 3.73
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post #32 of 91 (permalink) Old Mar 15th, 18, 10:06 AM Thread Starter
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Re: '72 Greenbrier Wagon Project

Going to set up the front suspension like I did on the 71. Using the taller pro forged upper ball joints with stock Moog lowers, rubber control arm bushings and jam nuts. Still debating on the offset shafts...

Coil springs I'm up in the air on...been searching thru posts but not finding much info. Whatever are in there now the previous owner just said they were big block springs. They sit WAY too high. He only put about 100 miles on the car, but I don't know they will settle that much. Hoping to get the front wheel well just below the top of the tire and get rid of the floaty /barge ride.

I have a set of Hotchkis 1" drop springs, but they were for my 71 Malibu sb...not sure they would work.

What about something like a Moog 6332 @ 271#or 5372 @ 284#? In the 71 I'm using the 5230 @251#with a coil cut, I think that would be too light of a spring though....should I be looking for something higher rated?

This wagon will have aftermarket a/c so not sure if that weighs as much as the factory setup....

'71 Malibu
3580 #, Carbed 6.0l LS swap in process
T-350, PTC 9" converter, 12 bolt, spool, 3.90 gears, MT ET R 275/60/15

355 [email protected]
125 [email protected]
383 Mud Motor- [email protected]
100 shot [email protected]
'72 Greenbrier Wagon: 454, 700R4, 12 bolt with 3.73
Geo71 is online now  
post #33 of 91 (permalink) Old Mar 15th, 18, 2:04 PM
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Re: '72 Greenbrier Wagon Project

The 5372 are in my wagon and after settling they are too soft for a big block. They are floaty and have let the suspension bottom, scraping the exhaust on the pavement. The 5536 is going to replace them. These are listed for a wagon with a BB by Summit Racing and the 5372 specifically stated not for a wagon but being stubborn I bought them anyway. Free height on the 5536 is shorter, 15.06 vs 17.38, spring rate 487 vs 289 and load capacity 1984.5 vs 1843 are both higher. Should give me the same ride height with no bottoming of the suspension. I'll let you know how it turns out.

Numbers are from the MOOG site

Universal Coil Spring Specifications | Moog Suspension Parts

From Summit

5372
Make: CHEVROLET
Model: CHEVELLE
Submodel: CONCOURS
Beginning Year: 1971
Ending Year: 1972
Engine Type: V8
Engine Size: 5.0L/307
Engine Family: Chevy small block Gen I
Drivetrain: RWD
Application Notes: Will not work with station wagon models, fits all others with A/C.

5536
Make: CHEVROLET
Model: CHEVELLE
Submodel: NOMAD
Beginning Year: 1972
Ending Year: 1972
Engine Type: V8
Engine Size: 7.4L/454
Engine Family: Chevy big block Mark IV
Drivetrain: RWD
Application Notes: Station wagon models with A/C, heavy duty.

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post #34 of 91 (permalink) Old Mar 15th, 18, 10:42 PM Thread Starter
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Re: '72 Greenbrier Wagon Project

Quote:
Originally Posted by Philip View Post
The 5372 are in my wagon and after settling they are too soft for a big block. They are floaty and have let the suspension bottom, scraping the exhaust on the pavement. The 5536 is going to replace them. These are listed for a wagon with a BB by Summit Racing and the 5372 specifically stated not for a wagon but being stubborn I bought them anyway. Free height on the 5536 is shorter, 15.06 vs 17.38, spring rate 487 vs 289 and load capacity 1984.5 vs 1843 are both higher. Should give me the same ride height with no bottoming of the suspension. I'll let you know how it turns out.

Numbers are from the MOOG site

Universal Coil Spring Specifications | Moog Suspension Parts

From Summit

5372
Make: CHEVROLET
Model: CHEVELLE
Submodel: CONCOURS
Beginning Year: 1971
Ending Year: 1972
Engine Type: V8
Engine Size: 5.0L/307
Engine Family: Chevy small block Gen I
Drivetrain: RWD
Application Notes: Will not work with station wagon models, fits all others with A/C.

5536
Make: CHEVROLET
Model: CHEVELLE
Submodel: NOMAD
Beginning Year: 1972
Ending Year: 1972
Engine Type: V8
Engine Size: 7.4L/454
Engine Family: Chevy big block Mark IV
Drivetrain: RWD
Application Notes: Station wagon models with A/C, heavy duty.
Ahh I was thinking you were going to the 5372ís.... had It backwards. I will measure these front springs that were in it. He just said they were Moog big block springs. They are tall, but seem pretty soft and floaty.

Maybe these Hotchkis springs have specs listed somewhere....

On another note, so far the upper drivers side control arm is kicking my butt!! Welding the cross shaft bolts....ugh!!!

'71 Malibu
3580 #, Carbed 6.0l LS swap in process
T-350, PTC 9" converter, 12 bolt, spool, 3.90 gears, MT ET R 275/60/15

355 [email protected]
125 [email protected]
383 Mud Motor- [email protected]
100 shot [email protected]
'72 Greenbrier Wagon: 454, 700R4, 12 bolt with 3.73
Geo71 is online now  
post #35 of 91 (permalink) Old Mar 15th, 18, 11:37 PM
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Re: '72 Greenbrier Wagon Project

Need to remove the motor mount through bolt on the drivers side, raise the motor high enough to remove the intermediate shaft and then the control arm.

Moog springs have the part number stamped into them. If they are the vinyl covered springs you will not be able to see it. I think it is on the end coil, I'll look at old photos see if I can find where the number is.

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post #36 of 91 (permalink) Old Mar 16th, 18, 12:09 AM Thread Starter
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Re: '72 Greenbrier Wagon Project

Quote:
Originally Posted by Philip View Post
Need to remove the motor mount through bolt on the drivers side, raise the motor high enough to remove the intermediate shaft and then the control arm.

Moog springs have the part number stamped into them. If they are the vinyl covered springs you will not be able to see it. I think it is on the end coil, I'll look at old photos see if I can find where the number is.
I've just about got all the welds ground off. Hoping the bolt can be pressed out after that. Not really sure why they thought it was necessary to weld those in....if that doesn't work, will look at jacking up the motor. Thanks for the tip.

The Hotchkis springs I have are 512#, have to measure the height. Advertised as 1" drop, but seemed to be the opposite in the 71. They were a lot easier to install than the 5230's being a shorter spring. Will look on the bb springs over the weekend.

Also with the car jacked up in the front ( no front springs) and measuring the rear wheel wells again (with some air in the shocks and 1" spacer in drivers side), the pass is still higher by 1/2". Wonder what is making that side higher? Something in the body mounting? Weird.

'71 Malibu
3580 #, Carbed 6.0l LS swap in process
T-350, PTC 9" converter, 12 bolt, spool, 3.90 gears, MT ET R 275/60/15

355 [email protected]
125 [email protected]
383 Mud Motor- [email protected]
100 shot [email protected]
'72 Greenbrier Wagon: 454, 700R4, 12 bolt with 3.73
Geo71 is online now  
post #37 of 91 (permalink) Old Mar 16th, 18, 7:34 AM
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Re: '72 Greenbrier Wagon Project

From the factory the cross shaft mounting bolts are pressed into the frame not welded.

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post #38 of 91 (permalink) Old Mar 17th, 18, 11:55 AM Thread Starter
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Re: '72 Greenbrier Wagon Project

Quote:
Originally Posted by Philip View Post
From the factory the cross shaft mounting bolts are pressed into the frame not welded.
I thought I read somewhere these were welded back in the day. Looks like it was done many moons ago.

Looked on Hotchkis site and the sb 1Ēdrop springs are also a recommended spring for wagons with aluminum heads. These are #512 and the bb are #580 springs. Maybe they will work since the ac is gone ?

'71 Malibu
3580 #, Carbed 6.0l LS swap in process
T-350, PTC 9" converter, 12 bolt, spool, 3.90 gears, MT ET R 275/60/15

355 [email protected]
125 [email protected]
383 Mud Motor- [email protected]
100 shot [email protected]
'72 Greenbrier Wagon: 454, 700R4, 12 bolt with 3.73
Geo71 is online now  
post #39 of 91 (permalink) Old Mar 17th, 18, 11:06 PM
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Re: '72 Greenbrier Wagon Project

The factory bolts are serrated, then pressed into the frame area
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post #40 of 91 (permalink) Old Mar 18th, 18, 8:22 AM
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Re: '72 Greenbrier Wagon Project

It is possible at one time someone may have tried to remove the bolts and they started to spin, AND they just continued to try and undo the bolts and ended up making the frame bolt hole mount--- OVERSIZE--- So they got out the welder??????
I only mentioned this, Because my buddy screwed up one of his mounting holes.
Bob


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post #41 of 91 (permalink) Old Mar 18th, 18, 11:02 AM Thread Starter
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Re: '72 Greenbrier Wagon Project

Quote:
Originally Posted by Robinls5 View Post
It is possible at one time someone may have tried to remove the bolts and they started to spin, AND they just continued to try and undo the bolts and ended up making the frame bolt hole mount--- OVERSIZE--- So they got out the welder??????
I only mentioned this, Because my buddy screwed up one of his mounting holes.
Bob
Yep anything is possible. Both the driver side were welded, neither of the pass are welded. I bought new bolts that are like the original. Maybe just use normal grade 8 instead?

'71 Malibu
3580 #, Carbed 6.0l LS swap in process
T-350, PTC 9" converter, 12 bolt, spool, 3.90 gears, MT ET R 275/60/15

355 [email protected]
125 [email protected]
383 Mud Motor- [email protected]
100 shot [email protected]
'72 Greenbrier Wagon: 454, 700R4, 12 bolt with 3.73
Geo71 is online now  
post #42 of 91 (permalink) Old Mar 18th, 18, 7:11 PM Thread Starter
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Re: '72 Greenbrier Wagon Project

Spent the afternoon grinding on the welded bolts...taking forever. Can't really get in there very good. Might be better to use a cutoff wheel and cut those bolts, remove the control arm then deal with what's left.

...forgot how much I dislike big blocks .

Took out what was left of the drivers side inner fender. Should be abit easier to see and work. Little at a time..

'71 Malibu
3580 #, Carbed 6.0l LS swap in process
T-350, PTC 9" converter, 12 bolt, spool, 3.90 gears, MT ET R 275/60/15

355 [email protected]
125 [email protected]
383 Mud Motor- [email protected]
100 shot [email protected]
'72 Greenbrier Wagon: 454, 700R4, 12 bolt with 3.73
Geo71 is online now  
post #43 of 91 (permalink) Old Mar 22nd, 18, 5:11 PM Thread Starter
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Re: '72 Greenbrier Wagon Project

Made a bit of progress. Finally got the drivers side upper control arm removed. Used a cut off wheel and cut about half the front shaft bolt off. Took the header loose, removed spark plugs and the steering column at the rag joint. Still have to get those bolts out, but at least the arm is out.

Got the lower ball joints out and the drivers side upper. Now to figure out how to get those bushings out, probably end up taking them to my friends shop.

Looks like the pass side will suck as well. Have to remove the header to get the rear lower arm bolt out. Front bolt is hitting the steering. Will wait to get the drivers side back together to deal with that.

Looking at the front coil springs the other day. It sure looks like one spring ( was in pass side) is about 1/2" taller than the other. Interesting.

Small victories, I will take em
Philip and LeoP like this.

'71 Malibu
3580 #, Carbed 6.0l LS swap in process
T-350, PTC 9" converter, 12 bolt, spool, 3.90 gears, MT ET R 275/60/15

355 [email protected]
125 [email protected]
383 Mud Motor- [email protected]
100 shot [email protected]
'72 Greenbrier Wagon: 454, 700R4, 12 bolt with 3.73
Geo71 is online now  
post #44 of 91 (permalink) Old Mar 29th, 18, 2:03 PM Thread Starter
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Re: '72 Greenbrier Wagon Project

Removed the pass side control arms. Front lower bolt was easy, rear bolt needed the header removed then it and the arm came out easy. Removed the lower ball joint while it was still on the car. It required no effort to come out. Didn't like that too much.

The upper wasnt too bad to take out, front bushing was half gone and the shaft was pretty much rusted to the bushing sleeve. Arm didn't want to move without a lot of effort.

The driver's side lower ball joint required a lot of effort to get it to come out. Both uppers were not all that much fun drilling the rivets. but they came out. The bushing sleeves have been pretty hateful and the arms look kinda pitted on the underside. So with that thought, I'm going to get some new ones.

Right now Im thinking getting the UMI tubular upper and lowers for the front. I was already going to get the rears like on my 71. May get the d/a Viking front coil overs too. Or just stick with the stock springs do some trimming and stock shocks for now.

Still need to get those cross shaft bolts out too....decisions, decisions.....

'71 Malibu
3580 #, Carbed 6.0l LS swap in process
T-350, PTC 9" converter, 12 bolt, spool, 3.90 gears, MT ET R 275/60/15

355 [email protected]
125 [email protected]
383 Mud Motor- [email protected]
100 shot [email protected]
'72 Greenbrier Wagon: 454, 700R4, 12 bolt with 3.73
Geo71 is online now  
post #45 of 91 (permalink) Old Apr 9th, 18, 3:10 PM Thread Starter
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Re: '72 Greenbrier Wagon Project

Finally got the control arm bolts out....a bunch of die grinder, cutoff wheel and bfh use got them out. Sent the arms with my brother in law to clean up for me. Got the Global West offset control arm shafts and bushings, 1/2" taller upper ball joints with the stock Moog lowers waiting.

Also picked up the Energy Suspension body bushings for when I get to them and the driver's side inner fenderwell.

Hope to get the front back together maybe this weekend, then tackle the rear stuff.
Philip likes this.

'71 Malibu
3580 #, Carbed 6.0l LS swap in process
T-350, PTC 9" converter, 12 bolt, spool, 3.90 gears, MT ET R 275/60/15

355 [email protected]
125 [email protected]
383 Mud Motor- [email protected]
100 shot [email protected]
'72 Greenbrier Wagon: 454, 700R4, 12 bolt with 3.73
Geo71 is online now  
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