How low until a drop x-member is needed? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

chevydog66 · 01-28-2009, 10:49 PM

How much drop until a drop crossmember is needed for the driveshaft? I have a 72 GMC lwb and will be swapping it to a 71 Chevy lwb frame with rearend in a few months. I already have the airride on the front with RE7's. I also have the RE7's for the rear along with the valves and 1/2" line. I just ordered the adj. trac bar and shock relocators, and c-notch, and hidden hitch. The only thing I need now is another tank and compressor. Then a lot of hard work. I will be getting the 71 frame stripped and powdercoated and installing the blazer tank. Any pics of drop x members?

**N2TRUX** · 01-29-2009, 10:19 AM

Anyone?

Rollie396 · 02-01-2009, 12:53 AM

My 72 project has a similar setup but with firestone 2600 bags and fabbed c notch that is about 2 3/4".The stock crossmember works fine for mine.

chevydog66 · 02-02-2009, 04:02 PM

Kewl, thanks Rollie!

01-28-2009, 10:49 PM	#1
chevydog66 GM ONLY BABY!!! Join Date: Oct 2003 Location: Fort Wayne, IN. Posts: 1,998	How low until a drop x-member is needed? How much drop until a drop crossmember is needed for the driveshaft? I have a 72 GMC lwb and will be swapping it to a 71 Chevy lwb frame with rearend in a few months. I already have the airride on the front with RE7's. I also have the RE7's for the rear along with the valves and 1/2" line. I just ordered the adj. trac bar and shock relocators, and c-notch, and hidden hitch. The only thing I need now is another tank and compressor. Then a lot of hard work. I will be getting the 71 frame stripped and powdercoated and installing the blazer tank. Any pics of drop x members? __________________ 2 wrongs don't make a right, but 3 lefts do. 66 Chevelle Malibu 406ci, 573hp, 10.99@121mph 96 Chevy Silverado Z71 72 GMC 1500 Super Custom LS 6.0/4L65 on airride http://www.cardomain.com/ride/707879...mc-c-k-pick-up Last edited by chevydog66; 01-28-2009 at 10:50 PM.

01-29-2009, 10:19 AM	#2
N2TRUX Happy to be here Join Date: Mar 2000 Location: Cypress, TX Posts: 39,021	Re: How low until a drop x-member is needed? Anyone? __________________ Follow me on Facebook and Instagram @N2trux.com Articles- "Jake" the 84 to 74 crewcab "Elwood" the77_Remix 85 GMC Sierra "Scarlett" "Refining Sierra"

02-01-2009, 12:53 AM	#3
Rollie396 someday it will be done! Join Date: Sep 2004 Location: Lloydminster,AB. Canada Posts: 1,620	Re: How low until a drop x-member is needed? My 72 project has a similar setup but with firestone 2600 bags and fabbed c notch that is about 2 3/4".The stock crossmember works fine for mine. __________________ '72 C-10 Proud owner of a million new and used pieces that used to be and will once again be(god willing) a testament to the term "they don't build em like that anymore. '80 LWB 2wd beater '67 GMC long fleet (cab donor) '66 long step (parked till it's turn comes around) '65 short step (parts truck that will donate it's bed and possibly frame to the '66) '06 Grand Prix wife's car (she hardly lets me touch it) my pics

02-02-2009, 04:02 PM	#4
chevydog66 GM ONLY BABY!!! Join Date: Oct 2003 Location: Fort Wayne, IN. Posts: 1,998	Re: How low until a drop x-member is needed? Kewl, thanks Rollie! __________________ 2 wrongs don't make a right, but 3 lefts do. 66 Chevelle Malibu 406ci, 573hp, 10.99@121mph 96 Chevy Silverado Z71 72 GMC 1500 Super Custom LS 6.0/4L65 on airride http://www.cardomain.com/ride/707879...mc-c-k-pick-up



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