67-72 Air suspension/driveline issues- Need some help - The 1947 - Present Chevrolet & GMC Truck Message Board Network

heymoe · 06-05-2010, 08:57 PM

Here's the skinny,

I have a 67 SWB that has a complete mild air suspension from ART. I have almost the entire Porter catalog except for the dropmember. I am having some issues with driveshaft interference when I air up. The rear bags almost have to be completely aired down and the front has to almost as low so that the driveshaft does not contact the center crossmember. I am looking for some advice on how to trouble shoot what could be the problem. The shaft is 3.5" diameter. I had this sized to meet the horsepower the engine. Could this be a pinion angle issue? Can you shim up the transmission mount?

Any help would be greatly appreciated.
Thanks
Also I can post pics later

VA72C10 · 06-05-2010, 09:05 PM

One piece or two piece driveshaft? do you have his trailing arm crossmember with carrier bearing? Pics will probably help...

heymoe · 06-05-2010, 09:08 PM

One piece driveshaft.
Here are some pics

heymoe · 06-05-2010, 09:22 PM

Quote:

Originally Posted by VA72C10

One piece or two piece driveshaft? do you have his trailing arm crossmember with carrier bearing? Pics will probably help...

One piece driveshaft with out carrier bearing. I attached some pics.
Thanks

VA72C10 · 06-05-2010, 09:25 PM

Have you talked with Nathan? I assume you could raise up the tranny mount pending how that affects your engine angle....can't tell that from the pics.

Ghostwhite · 06-05-2010, 09:42 PM

I'm pretty sure you would need a two piece for that specific trailing arm member, but wait for nate to answer.

PBFAB.COM · 06-05-2010, 09:59 PM

Matt-

PM sent. I have the perfect solution.

heymoe · 06-05-2010, 10:00 PM

Quote:

Originally Posted by VA72C10

Have you talked with Nathan? I assume you could raise up the tranny mount pending how that affects your engine angle....can't tell that from the pics.

Yea I have a email into him. I hope to hear back on Monday. Didn't know if anyone has had the issue before.
Thanks

heymoe · 06-05-2010, 10:09 PM

Quote:

Originally Posted by porterbuilt

Matt-

PM sent. I have the perfect solution.

You are the man Nathan! Again customer service is top notch. Thanks again for jumping on here. I know how important family time is and didn't want to text you on the weekend.

72BlckButy · 06-05-2010, 10:20 PM

Curious... what was the solution?

PBFAB.COM · 06-06-2010, 12:09 AM

Quote:

Originally Posted by 72BlckButy

Curious... what was the solution?

I will be sending him a different variation of the crossmember.

bedsled71 · 06-07-2010, 08:37 AM

Awesome Service!

heymoe · 06-07-2010, 03:15 PM

Quote:

Originally Posted by bedsled71

Awesome Service!

With out a doubt Nate is top notch!

chapster · 06-07-2010, 05:15 PM

Hey there Heymoe,

I was having simular clearance issues as you desrcribed and was wondering if the new style cross member is going to hit the floor of the cab???

As for Nate he is top notch with outstanding customer service.

bedsled71 · 06-07-2010, 06:31 PM

yes i believe you have to cut a strip out to fit

PBFAB.COM · 06-07-2010, 06:35 PM

There are NO clearance issues with the upper bar on the TAXM and the cab. There are some pics of Project Old Aux (that was body-dropped) where the floor was modded. Factory cab mounts will yield no clearance issues.

heymoe · 06-08-2010, 09:29 PM

Quote:

Originally Posted by chapster

Hey there Heymoe,

I was having simular clearance issues as you desrcribed and was wondering if the new style cross member is going to hit the floor of the cab???

As for Nate he is top notch with outstanding customer service.

I do not have my cab on my chassis yet to provide any feed back but I am sure as Nate has listed in his post there will be no issues.

Thanks again Nate for all the help, Are you done yet?

06-05-2010, 08:57 PM	#1
heymoe Registered User Join Date: Mar 2009 Location: Lebanon, Ohio Posts: 324	67-72 Air suspension/driveline issues- Need some help Here's the skinny, I have a 67 SWB that has a complete mild air suspension from ART. I have almost the entire Porter catalog except for the dropmember. I am having some issues with driveshaft interference when I air up. The rear bags almost have to be completely aired down and the front has to almost as low so that the driveshaft does not contact the center crossmember. I am looking for some advice on how to trouble shoot what could be the problem. The shaft is 3.5" diameter. I had this sized to meet the horsepower the engine. Could this be a pinion angle issue? Can you shim up the transmission mount? Any help would be greatly appreciated. Thanks Also I can post pics later

06-05-2010, 09:05 PM	#2
VA72C10 VA72C10 Join Date: Mar 2008 Location: Midlothian, VA Posts: 25,267	Re: 67-72 Air suspension/driveline issues- Need some help One piece or two piece driveshaft? do you have his trailing arm crossmember with carrier bearing? Pics will probably help... __________________ Looking for a 67-72 swb or blazer project in or around VA.

06-05-2010, 09:08 PM	#3
heymoe Registered User Join Date: Mar 2009 Location: Lebanon, Ohio Posts: 324	Re: 67-72 Air suspension/driveline issues- Need some help One piece driveshaft. Here are some pics Attached Images

06-05-2010, 09:25 PM	#5
VA72C10 VA72C10 Join Date: Mar 2008 Location: Midlothian, VA Posts: 25,267	Re: 67-72 Air suspension/driveline issues- Need some help Have you talked with Nathan? I assume you could raise up the tranny mount pending how that affects your engine angle....can't tell that from the pics. __________________ Looking for a 67-72 swb or blazer project in or around VA.

06-05-2010, 09:42 PM	#6
Ghostwhite Squarebody guy Join Date: Apr 2009 Location: Minnesota Posts: 335	Re: 67-72 Air suspension/driveline issues- Need some help I'm pretty sure you would need a two piece for that specific trailing arm member, but wait for nate to answer.

06-05-2010, 09:59 PM	#7
PBFAB.COM Senior Member Join Date: Dec 2003 Location: Mesa,Az Posts: 3,981	Re: 67-72 Air suspension/driveline issues- Need some help Matt- PM sent. I have the perfect solution. __________________ www.PorterbuiltFabrication.com Phone: 480-297-2621 E-mail: sales@pbfab.com Find us on FaceBook under Porterbuilt Fabrication Specializing in Chassis and Suspension Components for your Classic Chevrolet Truck. We offer components from the following manufacturers: Porterbuilt Accuair Ridetech (Air Ride Technologies) Air Lift Wilwood Intro Unisteer ECE Gotta Show Air Lift Borgeson CPP Supporting this forum since 2003!

06-05-2010, 10:20 PM	#10
72BlckButy Tot Roddin' Join Date: Apr 2005 Location: Mid-MO Posts: 24,461	Re: 67-72 Air suspension/driveline issues- Need some help Curious... what was the solution? __________________ -Nate 1969 CST SWB - Project Blank Slate (4.5/6" ECE Static Drop, 6-lug disc brake upgrade (manual), Billet Specialties Vintec 20x8.5 255/40 (F) 20x10 295/40 (R), 250 I-6) 1960 AMF Skylark - Tot Roddin' (Lowered with custom frame; soon to include custom push bar and interior) 2008 Silverado CrewCab 1LT (5.3L, 3:73, 4x4, LT1, Z-71, Towing Package)

06-07-2010, 08:37 AM	#12
bedsled71 Registered User Join Date: Feb 2007 Location: yuma arizona Posts: 448	Re: 67-72 Air suspension/driveline issues- Need some help Awesome Service!

06-07-2010, 05:15 PM	#14
chapster Registered User Join Date: Jul 2005 Location: .. Posts: 455	Re: 67-72 Air suspension/driveline issues- Need some help Hey there Heymoe, I was having simular clearance issues as you desrcribed and was wondering if the new style cross member is going to hit the floor of the cab??? As for Nate he is top notch with outstanding customer service. __________________ 1967 GMC shorty Parts Pile: NoLimit, Accu Air, Kore 3, Matts Classic Bowtie, March Performance, Lokar, ScottsHot Rods, Vintage Air, American Auto Wire, Circle D, Accu Air, Borla, Budnik, Ididit, One Piece Windows, Doug Thorley, Pypes, AutoLoc, Porterbuilt, CPP, Dynamat, Dakota Digital, Fesler 1968 Chevy c10 shorty Stepper (Patina LS project) 1967 gmc custom Long Box (Farm Truck Project)

06-07-2010, 06:31 PM	#15
bedsled71 Registered User Join Date: Feb 2007 Location: yuma arizona Posts: 448	Re: 67-72 Air suspension/driveline issues- Need some help yes i believe you have to cut a strip out to fit

06-07-2010, 06:35 PM	#16
PBFAB.COM Senior Member Join Date: Dec 2003 Location: Mesa,Az Posts: 3,981	Re: 67-72 Air suspension/driveline issues- Need some help There are NO clearance issues with the upper bar on the TAXM and the cab. There are some pics of Project Old Aux (that was body-dropped) where the floor was modded. Factory cab mounts will yield no clearance issues. __________________ www.PorterbuiltFabrication.com Phone: 480-297-2621 E-mail: sales@pbfab.com Find us on FaceBook under Porterbuilt Fabrication Specializing in Chassis and Suspension Components for your Classic Chevrolet Truck. We offer components from the following manufacturers: Porterbuilt Accuair Ridetech (Air Ride Technologies) Air Lift Wilwood Intro Unisteer ECE Gotta Show Air Lift Borgeson CPP Supporting this forum since 2003!

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