Bolt the rear bag to trailing arm? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

daved · 03-10-2011, 09:36 AM

so I am mounting the rear bag in place of the coil spring and bolting it on top....do I need to weld a bag plate and then a center bolt through the trailing arm? just a bolt and no plate? What do ya'll think?

**lolife99** · 03-10-2011, 09:40 AM

I used Slam Specialties air bags.
I just bolted them to the trailing arm.
No bracket.

daved · 03-10-2011, 09:52 AM

Thanks Lo.....btw got rid of the pink name....all the info on this site is worth the 25 bucks!

**lolife99** · 03-10-2011, 10:21 AM

Quote:

Originally Posted by daved

Thanks Lo.....btw got rid of the pink name....all the info on this site is worth the 25 bucks!

You are so right!
Thanks for supporting the board.

I used a 3/8"x4" bolt with a heavy washer to secure the bag to the trailing arm.
Then I made a template of the top of the bag.
I used this to locate the two bolt holes and the air fitting hole in the frame.

SCOTI · 03-10-2011, 10:28 AM

Quote:

Originally Posted by lolife99

You are so right!
Thanks for supporting the board.

I used a 3/8"x4" bolt with a heavy washer to secure the bag to the trailing arm.
Then I made a template of the top of the bag.
I used this to locate the two bolt holes and the air fitting hole in the frame.

x2.

daved · 03-10-2011, 10:53 AM

in reading different threads I saw that you need to drill the mounting holes front to rear with the fitting to the inside.....the kit I got supplied two straight and two 90deg bag fittings and I used the 90's on the front so he sent me two 90's for the back. Thanks guys....made my template and gonna drill the frame today!

**lolife99** · 03-10-2011, 11:35 AM

daved,... I also used studs in the top of the bag (instead of mounting bolts).
It's such a tight area of the frame,... that most of it is done by "feel".
You can then shove the studs up thru the frame, and much easier to install a nut on the stud than to start a bolt into the bag.
Plus I know I have full "thread engagement" into the bag.
Just my way of doing it.

raider65 · 03-10-2011, 01:55 PM

Quote:

Originally Posted by lolife99

daved,... I also used studs in the top of the bag (instead of mounting bolts).
It's such a tight area of the frame,... that most of it is done by "feel".
You can then shove the studs up thru the frame, and much easier to install a nut on the stud than to start a bolt into the bag.
Plus I know I have full "thread engagement" into the bag.
Just my way of doing it.

Good tip there I love this board!

tubbedII · 03-10-2011, 02:00 PM

Quote:

Originally Posted by raider65

Good tip there I love this board!

Wow! That sure is! Bolting the top of the rear bag was such a PITA...

72MARIO · 04-21-2011, 07:09 PM

Did anyone bother to use stainless bolts/studs ? The base looks to be aluminum on my Slam SS7's ?

70chevyolbetty · 05-05-2011, 06:38 AM

Did the same with the bag. Luv the fact info is to the point and accurate. Well done gents .
Posted via Mobile Device

03-10-2011, 09:36 AM	#1
daved Registered User Join Date: Feb 2011 Location: Austin texas Posts: 44	Bolt the rear bag to trailing arm? so I am mounting the rear bag in place of the coil spring and bolting it on top....do I need to weld a bag plate and then a center bolt through the trailing arm? just a bolt and no plate? What do ya'll think?

03-10-2011, 09:40 AM	#2
lolife99 67-72 parts collector,… Join Date: Nov 2002 Location: Mid-MO Posts: 22,700	Re: Bolt the rear bag to trailing arm? I used Slam Specialties air bags. I just bolted them to the trailing arm. No bracket. __________________ Keith Convert to disc brakes. http://67-72chevytrucks.com/vboard/s...d.php?t=444823

03-10-2011, 09:52 AM	#3
daved Registered User Join Date: Feb 2011 Location: Austin texas Posts: 44	Re: Bolt the rear bag to trailing arm? Thanks Lo.....btw got rid of the pink name....all the info on this site is worth the 25 bucks!

03-10-2011, 10:53 AM	#6
daved Registered User Join Date: Feb 2011 Location: Austin texas Posts: 44	Re: Bolt the rear bag to trailing arm? in reading different threads I saw that you need to drill the mounting holes front to rear with the fitting to the inside.....the kit I got supplied two straight and two 90deg bag fittings and I used the 90's on the front so he sent me two 90's for the back. Thanks guys....made my template and gonna drill the frame today!

03-10-2011, 11:35 AM	#7
lolife99 67-72 parts collector,… Join Date: Nov 2002 Location: Mid-MO Posts: 22,700	Re: Bolt the rear bag to trailing arm? daved,... I also used studs in the top of the bag (instead of mounting bolts). It's such a tight area of the frame,... that most of it is done by "feel". You can then shove the studs up thru the frame, and much easier to install a nut on the stud than to start a bolt into the bag. Plus I know I have full "thread engagement" into the bag. Just my way of doing it. __________________ Keith Convert to disc brakes. http://67-72chevytrucks.com/vboard/s...d.php?t=444823

04-21-2011, 07:09 PM	#10
72MARIO Registered User Join Date: Nov 2000 Location: Huntsville Ontario Canada Posts: 4,051	Re: Bolt the rear bag to trailing arm? Did anyone bother to use stainless bolts/studs ? The base looks to be aluminum on my Slam SS7's ? __________________ 1968 Suburban numbers matching all original truck now equipped with 6.0/4L80 on Accuair http://67-72chevytrucks.com/vboard/s...d.php?t=625017 1967 C/20 6.0/4L80 Roofing Truck 1990 V2500 Suburban "Plow Truck" 2005 TAHOE DD Last edited by 72MARIO; 04-21-2011 at 07:10 PM.

05-05-2011, 06:38 AM	#11
70chevyolbetty Registered User Join Date: May 2011 Location: Sylmar Posts: 59	Re: Bolt the rear bag to trailing arm? Did the same with the bag. Luv the fact info is to the point and accurate. Well done gents . Posted via Mobile Device



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