Rear suspension - The 1947 - Present Chevrolet & GMC Truck Message Board Network

softballnrd27 · 09-02-2015, 05:38 PM

73 C10 SWB
What would be the better all around performing rear suspension?
4 Link or truck arm both W/coilovers.

**biketopia** · 09-03-2015, 07:21 AM

NASCAR to this day still uses the trailing arm suspension, if it's good enough for NASCAR it's good enough for me. I'm going with trailing arms and coilovers when I pull the trigger.

andrewmp6 · 09-03-2015, 09:46 AM

All around the truck arms,Drag racing 4 link,Road racing 4 link or a 3 link depends who you ask.

69gmcc10 · 09-03-2015, 01:36 PM

They are both good systems. the 4 link has the potential, depending on features, for allot of adjustments for fine tuning of the suspension to get exactly what you want, but with all the extra moving parts and adjust-ability can be more complicated. the truck arm is a simple and proven system, but does lack in some areas when it comes to making adjustments.

Allot of companies make 4 link systems for your truck and I know Porterbuilt makes a truck arm kit for the square body trucks. Good luck and let us know what you choose and why.

bluex · 09-04-2015, 01:21 PM

CPP has a truck arm conversion for the squarebody as well. I have no experience with it but based off my experience so far with my porterbuilt kit I'd say go CPP if you want truck arms on a square. That or make the square fit a factory trailing arm frame, either would be easier probably...

**biketopia** · 09-08-2015, 07:06 AM

bluex have you had issues with your porterbuilt stuff??

bluex · 09-09-2015, 12:20 PM

Quote:

Originally Posted by biketopia

bluex have you had issues with your porterbuilt stuff??

With the square body trailing arm conversion, yes. Several issues in fact and I'm not the only one....

PBFAB.COM · 09-09-2015, 12:52 PM

The main challenge was being able to find and determine the frame rail variances that exist on the 73-87 frames. Unfortunately there are a couple of differences from driver side to passenger side depending on the CAT or no CAT options. It led to some fitment issues on the trailing arm crossmember that caused a few headaches along the way.

We don't sell very many of these kits, so it took a little while to find the main discrepancies. The truck that we originally proto-typed the kit on turned out to be the least common.... go figure!

Nate

09-02-2015, 05:38 PM	#1
softballnrd27 Always a work in progress Join Date: Jun 2007 Location: Harker Heights, TX Posts: 1,599	Rear suspension 73 C10 SWB What would be the better all around performing rear suspension? 4 Link or truck arm both W/coilovers. __________________ USMC Retired Never trust a man who can't laugh at his own fart! 2010 Silverado Crew Cab 73 SWB 5.3/4l80e Build Thread: http://67-72chevytrucks.com/vboard/s...d.php?t=695168

09-03-2015, 07:21 AM	#2
biketopia Senior Member Join Date: Jul 2015 Location: Warrenton VA Posts: 1,110	Re: Rear suspension NASCAR to this day still uses the trailing arm suspension, if it's good enough for NASCAR it's good enough for me. I'm going with trailing arms and coilovers when I pull the trigger. __________________ 71 c-10 Long Bed, under the knife for a No Limit Engineering Wide Ride Chassis Pack and coil over static drop. 07 Silverado Classic 2wd 95 Camaro 427SBC/TH350

09-03-2015, 09:46 AM	#3
andrewmp6 Registered User Join Date: Jan 2009 Location: Louisville,Ky Posts: 5,811	Re: Rear suspension All around the truck arms,Drag racing 4 link,Road racing 4 link or a 3 link depends who you ask.

09-03-2015, 01:36 PM	#4
69gmcc10 Registered User Join Date: May 2011 Location: Missoula, MT Posts: 934	Re: Rear suspension They are both good systems. the 4 link has the potential, depending on features, for allot of adjustments for fine tuning of the suspension to get exactly what you want, but with all the extra moving parts and adjust-ability can be more complicated. the truck arm is a simple and proven system, but does lack in some areas when it comes to making adjustments. Allot of companies make 4 link systems for your truck and I know Porterbuilt makes a truck arm kit for the square body trucks. Good luck and let us know what you choose and why. __________________ 69 GMC C10 build thread- http://67-72chevytrucks.com/vboard/s...d.php?t=501676 03 Silverado build thread-http://67-72chevytrucks.com/vboard/s...d.php?t=591582

09-04-2015, 01:21 PM	#5
bluex Registered User Join Date: Jun 2004 Location: Spartanburg, SC Posts: 1,963	Re: Rear suspension CPP has a truck arm conversion for the squarebody as well. I have no experience with it but based off my experience so far with my porterbuilt kit I'd say go CPP if you want truck arms on a square. That or make the square fit a factory trailing arm frame, either would be easier probably... __________________ Paul '78 GMC Serria 15 Heavy Half. 361/NV3500/3.73. Former LWB NV3500 swap Trailing arm swap '98 ECSB Z71 daily driver -traded '03 burb. Family cruiser http://upstategmtrucks.com/

09-08-2015, 07:06 AM	#6
biketopia Senior Member Join Date: Jul 2015 Location: Warrenton VA Posts: 1,110	Re: Rear suspension bluex have you had issues with your porterbuilt stuff?? __________________ 71 c-10 Long Bed, under the knife for a No Limit Engineering Wide Ride Chassis Pack and coil over static drop. 07 Silverado Classic 2wd 95 Camaro 427SBC/TH350

09-09-2015, 12:52 PM	#8
PBFAB.COM Senior Member Join Date: Dec 2003 Location: Mesa,Az Posts: 3,981	Re: Rear suspension The main challenge was being able to find and determine the frame rail variances that exist on the 73-87 frames. Unfortunately there are a couple of differences from driver side to passenger side depending on the CAT or no CAT options. It led to some fitment issues on the trailing arm crossmember that caused a few headaches along the way. We don't sell very many of these kits, so it took a little while to find the main discrepancies. The truck that we originally proto-typed the kit on turned out to be the least common.... go figure! Nate __________________ 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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