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Frame/Suspension/Brake... Talk & Q&A All things... Frame/Suspension/Brake

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  #1  
Old 04-30-2018, 07:55 PM
Az33 Az33 is offline
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Default 4 link mount question

I am in the process of setting up my rear suspension. It is a 33 Chevy frame that will be completely boxed in. I have sectioned about 3.5 feet out of the frame and Z'd it. My plan is to bag it and have it lay frame when aired out.
I want to do a parallel 4 link setup to save space under the bed. I want to mount the bars outside the frame. The bed sides will fit between the frame and link bars. In order to minimize chopping up the bed sides I want to mount my bars similar to a hairpin mount, allowing for only one hole drilled in each side as the lower link will be just below the frame.
My question(s) is/are can this be done and is it safe. Most bar mounts I see have a fixed width between two sides that keeps a stagnant amount of play for the ends. Can the ends be bolted through the bar link end, enter through a tube that is welded through the frame on both sides and secured on the opposite side? My concern would be this would not allow free movement and restrict/wear the bar ends when articulating.... whew, hope that made sense. I have attached a few pics and a sketch of my idea as well as a hairpin type mount I am referring to.
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  #2  
Old 04-30-2018, 08:50 PM
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Sam_Fear Sam_Fear is offline
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Default

I'm a little rusty on this stuff, but I'm thinking you want a double shear mount on those front bolts. Basically add a bracket sticking out from the frame so that the links mount in between the bracket and frame.
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Old 04-30-2018, 09:53 PM
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Dr Crankenstein Dr Crankenstein is offline
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Double shear mounts are best, but many, many hot rods are running 4 bar suspensions on single shear frame mounts.

I think your plan is sound and safe, assuming you're not throwing a ton of power at it...

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Last edited by Dr Crankenstein; 04-30-2018 at 10:36 PM.
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  #4  
Old 04-30-2018, 10:24 PM
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X2^^^^
Make sure you use grade 8 bolts 5/8" diameter minimum.
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  #5  
Old 05-01-2018, 01:02 AM
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earthman earthman is offline
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I have no advice, just wanted to say we are glad to see you are still working on this.
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Old 05-01-2018, 07:37 AM
Az33 Az33 is offline
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Quote:
Originally Posted by Dr Crankenstein View Post
Double shear mounts are best, but many, many hot rods are running 4 bar suspensions on single shear frame mounts.

I think your plan is sound and safe, assuming you're not throwing a ton of power at it...

.
Thanks, thats great news! Its just an old crate 350 and a T5, but I can't promise not to spin the tires a little here and there...

Quote:
Originally Posted by Old Iron View Post
X2^^^^
Make sure you use grade 8 bolts 5/8" diameter minimum.
OK, had planned on 9/16, but 5/8 sounds even better, thanks.

Quote:
Originally Posted by earthman View Post
I have no advice, just wanted to say we are glad to see you are still working on this.
Ya, thanks, still chipping away at it. It sat for way too long, but I'm pretty motivated again and working on it pretty regularly now.
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Old 05-01-2018, 12:56 PM
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Blue Eyed Devil Blue Eyed Devil is offline
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With the parallel setup you will need a panhard bar or a watts link. Something to keep in mind...
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Old 05-02-2018, 07:30 AM
Az33 Az33 is offline
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Quote:
Originally Posted by Blue Eyed Devil View Post
With the parallel setup you will need a panhard bar or a watts link. Something to keep in mind...
Sure, been planning on a panhard bar, thanks for the heads up
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