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01-10-2011, 11:43 AM | #1 |
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Little help with bag selection please.
I decided to go with bags in the front of my truck and probably the rear. I wanted to just do static drop BUT Ive installed a Cummins motor that weighs about 1200lbs. I want the truck as low as possible and figured by the time I found the right mix of static drop parts to get the truck where I want it, I could of bought some bags and schraders(not to many drop kits out there for people with Cummins motors). This will at least get me going in the right direction. The truck will not be running and driving for a good while, as of right now the bare frame is hanging from the rafters in my garage while the paint dries. I can piece the rest of the bag setup together while Im finishing the rest of the truck, so............My question is what bags would work the best underneath that big motor? Thanks again!!
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68 lwb to swb Cummins swap in the works. I promise it will be cool someday. Last edited by 68GenIII; 01-10-2011 at 04:45 PM. |
01-11-2011, 10:21 AM | #2 |
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Re: Little help with bag selection please.
Ok...how about this, What are you iron headed bigblock people running for bags?
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68 lwb to swb Cummins swap in the works. I promise it will be cool someday. |
01-11-2011, 11:36 AM | #3 |
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Re: Little help with bag selection please.
You'll want some HD bags 8" minimum diameter. RE-8's or Firestone F7325's/26c's. 3400# 8.5" diameter, 3" min height, 5-6" ride height, 10" max height.
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67SWB-B.B.RetroRod 64SWB-Recycle 89CCDually-Driver/Tow Truck 99CCSWB Driver All Fleetsides @rattlecankustoms in IG Building a small, high rpm engine with the perfect bore, stroke and rod ratio is very impressive. It's like a highly skilled Morrocan sword fighter with a Damascus Steel Scimitar..... Cubic inches is like Indiana Jones with a cheap pistol. |
01-11-2011, 11:43 AM | #4 |
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Re: Little help with bag selection please.
Thats what I was thinking. Do you have any experience with the Air Lift bags? Ive seen the 2600 Dominator bags pretty reasonably priced.
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68 lwb to swb Cummins swap in the works. I promise it will be cool someday. |
01-11-2011, 11:51 AM | #5 |
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Re: Little help with bag selection please.
I've only used Firestone's. My current project 64 is utilizing some of the Slam RE series bags just to try them out.
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67SWB-B.B.RetroRod 64SWB-Recycle 89CCDually-Driver/Tow Truck 99CCSWB Driver All Fleetsides @rattlecankustoms in IG Building a small, high rpm engine with the perfect bore, stroke and rod ratio is very impressive. It's like a highly skilled Morrocan sword fighter with a Damascus Steel Scimitar..... Cubic inches is like Indiana Jones with a cheap pistol. |
01-11-2011, 11:54 AM | #6 |
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Re: Little help with bag selection please.
Thanks for the help SCOTI!
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68 lwb to swb Cummins swap in the works. I promise it will be cool someday. |
01-12-2011, 12:43 AM | #7 |
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Re: Little help with bag selection please.
I'd deff. stuff as big of bag as you can get in there.Like posted above.I have Slam HE8 in the back of my car an love them.Ride great an lock up nice.
If your looking for a nice drop.I'd think about boxing the lower arms so your not having to run cups. my buddy did this to his 65 (shortbed70) on here.Truck sits about 1/2" off the ground cross member that isAn locks up to where teh upper bump a arm bump stops arer hitting frame Last edited by baggedout81; 01-12-2011 at 12:45 AM. |
01-12-2011, 09:19 AM | #8 | |
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Re: Little help with bag selection please.
Quote:
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68 lwb to swb Cummins swap in the works. I promise it will be cool someday. |
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01-12-2011, 11:39 AM | #9 |
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Re: Little help with bag selection please.
I'd go with the HE-8's like mentioned above
Model HE-8 Diameter @ 0 PSI 8" Diameter @ Max PSI 8" Max PSI 400 Plate Material Zinc/Aluminum Min Height 2.9" Max Height 11" Mounting (Top) (2) 3/8" - 16 Mounting (Bottom) (3) 3/8" - 16 Air Port (2) 1/2" NPT Internal Bump Stops Yes Force to Collapse (to Min Height) 80 lbs Replaces Firestone 26 Goodyear 2B8 http://www.kplinks.com/product.php?p...6&cat=1&page=2
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'85 swb Last edited by droppedgmc; 01-12-2011 at 11:41 AM. |
01-12-2011, 01:53 PM | #10 | |
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Re: Little help with bag selection please.
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http://67-72chevytrucks.com/vboard/s...=332884&page=9 |
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01-12-2011, 03:37 PM | #11 | |
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Re: Little help with bag selection please.
Quote:
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68 lwb to swb Cummins swap in the works. I promise it will be cool someday. |
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01-12-2011, 05:27 PM | #12 | |
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Re: Little help with bag selection please.
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Boxing the lowers gives you teh ability to lay a little lower in the front.Your essentially moving your lower bag mount lower so when aired out the give the bag more room to fully collapse vs. if you run cups that just bolt to bag an sit in spring pocket your only gonna go as low as your cup/bag will let you. On my buddys truck (shortbed70) when his is aired out the lower control arm dam near hist the spring pocket.Its pretty close.Now hes not gonna drive it like this mostly for the extreme angle the ball joints are at when drooped.But that can be solved to w/ pie cutting the ball joints or.Another thing i havent looked into yet is powerperformance.com makes some ball joints that the joint it self is angled w/ the base so it dont bind as easy.I just dont know if they make them for these older chevys.I know they make em for 78-88 g-bodys/s-10's |
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01-12-2011, 05:31 PM | #13 |
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Re: Little help with bag selection please.
224c will be more than enough or the SS or RE7 .. Going with an re 8 is way over kill... the 224c has a 3200lb per bag load capacity at 100psi and is rated up to 150psi working pressure beauty of an air spring BBC, SBC, diesel don't matter
Check out our air suspension sale thread Slams, Dominators, Firestones all instock free shipping and low prices Last edited by tech@scottshotrods; 01-12-2011 at 05:36 PM. |
01-12-2011, 06:05 PM | #14 | |
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Re: Little help with bag selection please.
Quote:
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68 lwb to swb Cummins swap in the works. I promise it will be cool someday. |
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01-12-2011, 06:08 PM | #15 | |
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Re: Little help with bag selection please.
Quote:
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68 lwb to swb Cummins swap in the works. I promise it will be cool someday. |
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01-12-2011, 06:22 PM | #16 | |
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Re: Little help with bag selection please.
Quote:
The 73-91 C30 Cool Ride kit utilizes F7325/26c's. That's 8.5" dia/3400lb & the equivalent of an RE-8 last I checked. I would think since a heavier truck w/a lighter drivetrain warrants the larger bag, a heavier drivetrain in a lighter truck would benefit from it as well. Care to share your thoughts?
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67SWB-B.B.RetroRod 64SWB-Recycle 89CCDually-Driver/Tow Truck 99CCSWB Driver All Fleetsides @rattlecankustoms in IG Building a small, high rpm engine with the perfect bore, stroke and rod ratio is very impressive. It's like a highly skilled Morrocan sword fighter with a Damascus Steel Scimitar..... Cubic inches is like Indiana Jones with a cheap pistol. |
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01-12-2011, 06:54 PM | #17 |
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Re: Little help with bag selection please.
i have re 7s on my dually project up front, seem to be ok for the front. it has a 7.4l big block in it and it is a one ton truck. out back is a diffrent story, i ran a re 7 behind the axle.... big mistake. now i have ordered a sleeve style bag for ther rear. i almost have it finished, according to the great almighty nate it should make a world of difference.
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01-12-2011, 07:01 PM | #18 | |
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Re: Little help with bag selection please.
Quote:
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68 lwb to swb Cummins swap in the works. I promise it will be cool someday. |
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01-12-2011, 07:04 PM | #19 |
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Re: Little help with bag selection please.
Double convoluted bags in a 1:1 (mounted on the rear end) application usually don't ride very good. Sleeve type bags yield better ride characteristics in that mounting position.
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67SWB-B.B.RetroRod 64SWB-Recycle 89CCDually-Driver/Tow Truck 99CCSWB Driver All Fleetsides @rattlecankustoms in IG Building a small, high rpm engine with the perfect bore, stroke and rod ratio is very impressive. It's like a highly skilled Morrocan sword fighter with a Damascus Steel Scimitar..... Cubic inches is like Indiana Jones with a cheap pistol. |
01-12-2011, 07:19 PM | #20 |
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Re: Little help with bag selection please.
double convoluted bags work well on levers, not on a 1:1 ratio like scoti said. when mounting a bag on top or behind the axle a sleeve style bag is recommended. it is the construction of the bag that makes the difference. it rode so bad that i changed the whole rear suspension design. it should make for a smooth ride. a convoluted bag works well on a front suspension because it is working off of a lever. kind of like mounting a bag on a bar of a texas two link. excuse my lack of vocabulary on the suspension, i just say it where everyone can understand it.
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01-12-2011, 07:21 PM | #21 | |
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Re: Little help with bag selection please.
Quote:
As for bags yeah a 7" slam or comparable should do it.Thats what we put in shortbed70 65 but its got a small block.At 75 psi shop compressor it raises pretty reasonably 1/2" line an bags.Should pop right up at 150 psi |
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01-12-2011, 07:22 PM | #22 | |
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Re: Little help with bag selection please.
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01-12-2011, 07:32 PM | #23 |
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Re: Little help with bag selection please.
If you plan on mounting the bags over or behind the axle I would and will only suggest A F9000 Air Spring, reason being is because you are dealing with a 1:1 motion ration and a rolling sleeve has a linear spring rate unlike its double convoluted counter part which has an extremely progressive spring rate.
What that means while driving down the road a double convoluted spring will build spring rate as it compresses where the rolling spring will stay consistant through the range of motion. So the difference between the two is night an day with a double convoluted mounted over the axle you will experiance some jolts and a reall bumby like truck ride, where with the rolling sleeve you will experiance a nice smooth new like car ride.. Plus the rolling sleeve has more usable stroke. The only time a double convoluted bag should be used is when there is an un even ration involved IFS front, canti rear, any thing with leverage basically. Now as for using the biggest bag posible is not true. When installing an Air Suspension properly a 255c is more than suffeciant While at Air Ride/ Ridetech we used 255cs on the front of our 2006 duramax duallies with no problems at all its all about leverage and motion ratios. If you brackets have improper angles then yes they will require a little more preasure which then one would assume they need a larger bag. |
01-12-2011, 07:38 PM | #24 | |
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Re: Little help with bag selection please.
Quote:
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67SWB-B.B.RetroRod 64SWB-Recycle 89CCDually-Driver/Tow Truck 99CCSWB Driver All Fleetsides @rattlecankustoms in IG Building a small, high rpm engine with the perfect bore, stroke and rod ratio is very impressive. It's like a highly skilled Morrocan sword fighter with a Damascus Steel Scimitar..... Cubic inches is like Indiana Jones with a cheap pistol. |
|
01-12-2011, 07:41 PM | #25 |
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Re: Little help with bag selection please.
yes the ratios are different it was just an example as to weight doesn't have as much bearing as the ratios do
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