#21  
Old 05-19-2022, 01:49 PM
Mwieczorek Mwieczorek is offline
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Just for reference...


Impala rear suspension...
Springs mounted to lower links
Upper links mounted to axle tube
Has a panhard rod
Bushings are all pressed into the links, mating clevises on the axle


Bonneville rear suspension...
Springs mounted to perches on the axle
Upper links mounted to center section, uses cast-in bosses.
No panhard rod
Bushings pressed into the axle, mating clevises on the links.

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Matt Wieczorek
1966 Bonneville Hardtop Coupe (family cruiser that we take to car shows)
1967 GTO hardtop, 400HO, 4 speed (don't ask, its a basket case)
1973 Grand Prix SJ (currently doing a rolling restoration)

Trying to find that "sweet spot" between Roadkill and Concours d'Elegance
  #22  
Old 05-19-2022, 01:59 PM
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HWYSTR455 HWYSTR455 is offline
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Excellent, thank you, I tend to be a picture-person!

Those ears on the center section do look spread further than on a A body, but might just be the picture.

So no chance you can dig thru a library at work and find the mech drawing for the housing? Or center section? Or would that thing be rolled up in a tube buried somewhere in a basement? (hard copy)

I suspect the pinion could be a reference point to measure ear locations?

Interesting too that the lower arms where they mount to the housing bracket aren't captured, would think that would be a point of deflection. Should be easy to mod that.

There's got to be a drawing somewhere of that center section, or even the whole housing.


.

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1970 GTO Judge Tribute Pro-Tour Project 535 IA2
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1971 Trans Am 463, 315cfm E-head Sniper XFlow EFI, TKO600 extreme, 9", GW suspension, Baer brakes, pro tour car
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  #23  
Old 05-19-2022, 02:19 PM
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HWYSTR455 HWYSTR455 is offline
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These may be interesting to you:

https://forums.maxperformanceinc.com.../t-850680.html

https://forums.maxperformanceinc.com.../t-849233.html

There's a couple contacts in there that might help. It's reaching, but I will keep digging...

.

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1970 GTO Judge Tribute Pro-Tour Project 535 IA2
http://forums.maxperformanceinc.com/...d.php?t=760624
1971 Trans Am 463, 315cfm E-head Sniper XFlow EFI, TKO600 extreme, 9", GW suspension, Baer brakes, pro tour car
https://forums.maxperformanceinc.com...ght=procharger
Theme Song: http://www.youtube.com/watch?v=7zKAS...ature=youtu.be
  #24  
Old 05-19-2022, 02:22 PM
Mwieczorek Mwieczorek is offline
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Quote:
Originally Posted by HWYSTR455 View Post
I wasn't being sarcastic, or trying to be rude, I truly was asking if that was a legitimate setup that guy is selling, and if it was a correct setup.

Excellent to have hard core GM engineers on here, a big welcome to you!

Wonder if there's a way to cross ref the center housing part numbers? Do a comparison? Even mechanical drawings would be a good start? Trying to think outside the box here.

I am interested, like I said, I'm almost ready to go through this with my own car, once I finish moving, and purchase one, am starting to keep an eye out now for a project candidate.

.
Oh, I didn't take it as sarcasm at all!

I might be a "wee bit" sensitive because I spent a couple months last fall trying to figure out how to shoehorn a 9" or a GM 12 bolt under the car and gave up.

Sadly, finding prints for cars that we made 55 years ago is not an easy task. That was all back in the day when each division had its own engineering staff in a different part of town. Cadillac was downtown, Oldsmobile was in Lansing, Buick was in Flint, Pontiac was in Pontiac, etc... Everything got condensed down to the Warren Technical Center a while back, but I have no idea where the archives are and I suspect a lot of that stuff was lost in the big flood of 2014.

If you want to see my suspension handiwork, look under one of our HD pickups. I was the lead suspension and structure design/release engineer on that program. Now I'm the corporate technical specialist for chassis elastomers, so I write technical requirements and give questionable advice to the other engineers.

You're gonna hate this, but I had a 66 Catalina convertible and I just sold it a month ago. I needed the space because I bought a 67 GTO and needed to "thin the herd". The Cat was a nice cruiser! All I can say is find one with a nice, solid body with no missing parts. The only parts you can get for a B body are parts that are common to an A body or other GM B body. Floor pans, quarter panels, fenders, many trim pieces etc are not reproduced, so you are pulling them off donor cars or fabbing it yourself.

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Matt Wieczorek
1966 Bonneville Hardtop Coupe (family cruiser that we take to car shows)
1967 GTO hardtop, 400HO, 4 speed (don't ask, its a basket case)
1973 Grand Prix SJ (currently doing a rolling restoration)

Trying to find that "sweet spot" between Roadkill and Concours d'Elegance
  #25  
Old 05-19-2022, 02:22 PM
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HWYSTR455 HWYSTR455 is offline
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That PMT Fab place may also be able to help, they may have mocked up a housing to make the control arms:

https://pmtfabrication.com/

They are a full 'suspension' fab shop.

.

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1970 GTO Judge Tribute Pro-Tour Project 535 IA2
http://forums.maxperformanceinc.com/...d.php?t=760624
1971 Trans Am 463, 315cfm E-head Sniper XFlow EFI, TKO600 extreme, 9", GW suspension, Baer brakes, pro tour car
https://forums.maxperformanceinc.com...ght=procharger
Theme Song: http://www.youtube.com/watch?v=7zKAS...ature=youtu.be
  #26  
Old 05-19-2022, 02:29 PM
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HWYSTR455 HWYSTR455 is offline
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Quote:
Originally Posted by Mwieczorek View Post
Oh, I didn't take it as sarcasm at all!

I might be a "wee bit" sensitive because I spent a couple months last fall trying to figure out how to shoehorn a 9" or a GM 12 bolt under the car and gave up.

Sadly, finding prints for cars that we made 55 years ago is not an easy task. That was all back in the day when each division had its own engineering staff in a different part of town. Cadillac was downtown, Oldsmobile was in Lansing, Buick was in Flint, Pontiac was in Pontiac, etc... Everything got condensed down to the Warren Technical Center a while back, but I have no idea where the archives are and I suspect a lot of that stuff was lost in the big flood of 2014.

If you want to see my suspension handiwork, look under one of our HD pickups. I was the lead suspension and structure design/release engineer on that program. Now I'm the corporate technical specialist for chassis elastomers, so I write technical requirements and give questionable advice to the other engineers.

You're gonna hate this, but I had a 66 Catalina convertible and I just sold it a month ago. I needed the space because I bought a 67 GTO and needed to "thin the herd". The Cat was a nice cruiser! All I can say is find one with a nice, solid body with no missing parts. The only parts you can get for a B body are parts that are common to an A body or other GM B body. Floor pans, quarter panels, fenders, many trim pieces etc are not reproduced, so you are pulling them off donor cars or fabbing it yourself.
You're right, gonna hate that! Heheh! And mental note on parts, uhg. I guess that's why nice ones aren't cheap.

The 'big flood', dang. I can only imagine what went up in smoke from that. Well, I suspect at least someone has either reverse engineered it, or have copies. Those guys in AU might be a good source, plenty down under are doing 50s & 60s cars there, sure someone has some info. That's why I was thinking those archive links might help.

.

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1970 GTO Judge Tribute Pro-Tour Project 535 IA2
http://forums.maxperformanceinc.com/...d.php?t=760624
1971 Trans Am 463, 315cfm E-head Sniper XFlow EFI, TKO600 extreme, 9", GW suspension, Baer brakes, pro tour car
https://forums.maxperformanceinc.com...ght=procharger
Theme Song: http://www.youtube.com/watch?v=7zKAS...ature=youtu.be
The Following User Says Thank You to HWYSTR455 For This Useful Post:
  #27  
Old 05-19-2022, 02:49 PM
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HWYSTR455 HWYSTR455 is offline
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Looks like there are 2 series for the 65-70 rears:

https://forums.maxperformanceinc.com...d.php?t=826247

May want to poke around in the Big Pontiac Tech section.

https://forums.maxperformanceinc.com...play.php?f=431

.

__________________
.

1970 GTO Judge Tribute Pro-Tour Project 535 IA2
http://forums.maxperformanceinc.com/...d.php?t=760624
1971 Trans Am 463, 315cfm E-head Sniper XFlow EFI, TKO600 extreme, 9", GW suspension, Baer brakes, pro tour car
https://forums.maxperformanceinc.com...ght=procharger
Theme Song: http://www.youtube.com/watch?v=7zKAS...ature=youtu.be
  #28  
Old 05-19-2022, 02:58 PM
Mwieczorek Mwieczorek is offline
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Posts: 59
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Quote:
Originally Posted by HWYSTR455 View Post
Looks like there are 2 series for the 65-70 rears:

https://forums.maxperformanceinc.com...d.php?t=826247

May want to poke around in the Big Pontiac Tech section.

https://forums.maxperformanceinc.com...play.php?f=431

.
Yep, my "barn find 66 Bonneville" thread is in the 61-66 B body section.

https://forums.maxperformanceinc.com...d.php?t=850097

__________________
Matt Wieczorek
1966 Bonneville Hardtop Coupe (family cruiser that we take to car shows)
1967 GTO hardtop, 400HO, 4 speed (don't ask, its a basket case)
1973 Grand Prix SJ (currently doing a rolling restoration)

Trying to find that "sweet spot" between Roadkill and Concours d'Elegance
  #29  
Old 05-22-2022, 03:20 AM
mrmark1957 mrmark1957 is offline
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I put the 2.75 low gear ( 10 % lower than stock 2.48 ) set into my 67 Catalina with a T-400 and 2.56 rear posi. 9.5 compression 462, mild cam ,stock converter. Gets off the line quick and runs on highway nice. Ten percent lower on a 3.08 will feel like 3.42's in low gear, and still cruise the highway with the 3.08.

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