new info on the drop spindles vs control arms thread - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Dropt72Shortbed · 12-01-2002, 02:59 PM

i emailed DJM to ask them about their lower arms and if they maintained stock geometry. this was the reply..

Subj: Re: question about dropped lower arms for 72 chevy c-10
Date: 11/26/2002 7:27:44 AM Pacific Standard Time
From: djm@dslextreme.com
To: Dropt72shortbed@aol.com
Sent from the Internet (Details)

Hi,
The spindle remains in the same position. The upper arm is now angeled upward to allow your truck to lower

crazy longhorn · 12-01-2002, 03:23 PM

I made a couple phone calls last week on dropped arms, one was to DJM tech info, & the other was to Charley's drop shop. from the info I gathered, the dropped lower arms are made shorter than stock to correct geometry problems that happen with that type drop. The "optional " upper arms are made longer to also help with alignment.......without adding a bunch of shims. I have a 3" drop on front of the longhorn(cut coil), & it does change the angle of the top arm quite a bit! I talked with Charley for about 1/2hr, ......a great guy to talk with, with loads of good ideas!

ChevLoRay · 12-02-2002, 03:34 PM

....going thru my collection of magazines and the February 2000 issue of Custom Classic Trucks has an article detailing the alteration of control arms to drop a 63 and up truck. I know that they modified an upper control arm for the article, but my concern is all that cutting and welding that was needed to modify the A-arm when swapping in another spindle would accomplish the same thing with a lot less work....and retain the original stamping of the upper A-frame and its' inherent strength. If all aftermarket A-frames are cut and modified in a similar manner, well, let's just say that I am more than satisfied with my dropped spindles.

Okay. I'm gonna be quiet for now.

crazy longhorn · 12-02-2002, 04:44 PM

Im not too nuts about cutting & modifying stock arms either, & will more likely go for the aftermarket tube style arms(top), as they are longer than stock to help with alignment with the shorter springs......

12-01-2002, 02:59 PM	#1
Dropt72Shortbed Registered User Join Date: May 2002 Location: Huntington Beach CA Posts: 678	new info on the drop spindles vs control arms thread i emailed DJM to ask them about their lower arms and if they maintained stock geometry. this was the reply.. Subj: Re: question about dropped lower arms for 72 chevy c-10 Date: 11/26/2002 7:27:44 AM Pacific Standard Time From: djm@dslextreme.com To: Dropt72shortbed@aol.com Sent from the Internet (Details) Hi, The spindle remains in the same position. The upper arm is now angeled upward to allow your truck to lower

12-01-2002, 03:23 PM	#2
crazy longhorn Fabricate till you "puke" Join Date: Jun 2002 Location: Ill Posts: 9,402	I made a couple phone calls last week on dropped arms, one was to DJM tech info, & the other was to Charley's drop shop. from the info I gathered, the dropped lower arms are made shorter than stock to correct geometry problems that happen with that type drop. The "optional " upper arms are made longer to also help with alignment.......without adding a bunch of shims. I have a 3" drop on front of the longhorn(cut coil), & it does change the angle of the top arm quite a bit! I talked with Charley for about 1/2hr, ......a great guy to talk with, with loads of good ideas! __________________ 69 longhorn,4" chop,3/5 drop, 1/2 ton suspension/disc brakes,1 1/2" body drop,steel tilt clip, 5.3/Edelbrock rpm intake/600 carb, Hooker streetrod shorties,2 1/2" exhaust/ H pipe/50's Flows , 6 spd Richmond trans,12 bolt/ 3.40 gears....

12-02-2002, 03:34 PM	#3
ChevLoRay Old Skool Club Join Date: Jun 2001 Location: Benton, AR "The Heart of Arkansas" Posts: 10,880	....going thru my collection of magazines and the February 2000 issue of Custom Classic Trucks has an article detailing the alteration of control arms to drop a 63 and up truck. I know that they modified an upper control arm for the article, but my concern is all that cutting and welding that was needed to modify the A-arm when swapping in another spindle would accomplish the same thing with a lot less work....and retain the original stamping of the upper A-frame and its' inherent strength. If all aftermarket A-frames are cut and modified in a similar manner, well, let's just say that I am more than satisfied with my dropped spindles. Okay. I'm gonna be quiet for now. __________________ Member Nr. 2770 '96 GMC Sportside; 4.3/SLT - Daily driven....constantly needs washed. '69 C-10 SWB; 350/TH400 - in limbo The older I get, the better I was.

12-02-2002, 04:44 PM	#4
crazy longhorn Fabricate till you "puke" Join Date: Jun 2002 Location: Ill Posts: 9,402	Im not too nuts about cutting & modifying stock arms either, & will more likely go for the aftermarket tube style arms(top), as they are longer than stock to help with alignment with the shorter springs...... __________________ 69 longhorn,4" chop,3/5 drop, 1/2 ton suspension/disc brakes,1 1/2" body drop,steel tilt clip, 5.3/Edelbrock rpm intake/600 carb, Hooker streetrod shorties,2 1/2" exhaust/ H pipe/50's Flows , 6 spd Richmond trans,12 bolt/ 3.40 gears....



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