Re-arching Springs? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

68Maniac · 09-17-2008, 04:12 PM

Hello 4x4 forum, Newbie here. I am needing front 10" springs for my 69 4x4 build but can't seem to find any. Superlift has a 8" spring. One company told me that they could re-arch the 8" to a 10" spring. My question is will the springs sag over time and won't this change the spring length? Another lift company has told me I could use 73-87 springs with 1" longer shackles on my 69 swb 4x4. Any truth to this?

orbot · 09-17-2008, 07:13 PM

Ive had rearching done twice and yes, with time they loss it, they shackles would do the same in matter of time..thats my opinion

Jtrux · 09-17-2008, 07:31 PM

The newer model springs are not a bolt in, requires pretty extensive modifications, luckily the aftermarket has come to the rescue. Look up diy4x and they have a kit called b52, it allows you to use the longer springs, again, not the easiest to do. Custom springs is another answer, I recommend Alcan.

**special-K** · 09-17-2008, 08:48 PM

I don`t think new springs being over-arched will sag any more than any other spring.All springs are flat steel that is arched.An aged spring will flatten over time,from factory or after re-arching.Like the springs did originally from age before they required re-arching.
I don`t see how 73-upleafs could work.The lift springs are made to end up the right length after desired arch.So,maybe,if you arched stock 73-up leafs 10" they would end up short enough to use in a pre-73.But,10" lift springs you buy are made from longer stock to end up the proper length after arching.

**Captainfab** · 09-18-2008, 12:05 AM

I would suggest using a set of 52" and 56" springs for the '73-'87's in a 6" lift. Then combine these with the B52's and a rear shackle flip from diy4x.com. This should give you about 10" of lift, but of course it is a bit of work.

**special-K** · 09-18-2008, 07:14 AM

10" of lift is alot of work no matter what way you go.I agree with Captainfab.That would be the way to go.I`d want longer springs for that much arch.

68Maniac · 09-18-2008, 02:34 PM

Thanks for the quick replys, I am getting a bid on the Alcan springs. But I really like the diy4x setup that you guys have spoke about and am researching it now.How tough is it moving the diy4x rear shackle eye hanger?

68Maniac · 09-18-2008, 02:43 PM

Will the truck "flex" with this setup? I am going to be running 39.5 boggers and don't want the tires getting into the body. More lift?

09-17-2008, 04:12 PM	#1
68Maniac Registered User Join Date: Sep 2008 Location: Lufkin, Texas Posts: 51	Re-arching Springs? Hello 4x4 forum, Newbie here. I am needing front 10" springs for my 69 4x4 build but can't seem to find any. Superlift has a 8" spring. One company told me that they could re-arch the 8" to a 10" spring. My question is will the springs sag over time and won't this change the spring length? Another lift company has told me I could use 73-87 springs with 1" longer shackles on my 69 swb 4x4. Any truth to this?

09-17-2008, 07:13 PM	#2
orbot Registered User Join Date: Jan 2008 Location: Chula Vista, Ca Posts: 518	Re: Re-arching Springs? Ive had rearching done twice and yes, with time they loss it, they shackles would do the same in matter of time..thats my opinion

09-17-2008, 07:31 PM	#3
Jtrux I'm a poor spectator Join Date: Aug 2006 Location: San Antonio, Tx Posts: 2,287	Re: Re-arching Springs? The newer model springs are not a bolt in, requires pretty extensive modifications, luckily the aftermarket has come to the rescue. Look up diy4x and they have a kit called b52, it allows you to use the longer springs, again, not the easiest to do. Custom springs is another answer, I recommend Alcan. __________________ 2006 Jeep Unlimited IMPACT ORANGE 1993 Chevy 2500 4x4 ExCab LWB 454/NV4500 Tow rig 1977 Ford F100 2x4 LWB 1st truck I owned, still have it!!! 1979 Ford F150 4x4 SWB Built Ford Tough!!! 1971 Chevy Blazer 350 / SM465 / NP205 UNDER CONSTRUCTION Soon to have a LQ4 6.0!!!

09-17-2008, 08:48 PM	#4
special-K Special Order Join Date: Nov 2004 Location: Mt Airy, MD Posts: 85,851	Re: Re-arching Springs? I don`t think new springs being over-arched will sag any more than any other spring.All springs are flat steel that is arched.An aged spring will flatten over time,from factory or after re-arching.Like the springs did originally from age before they required re-arching. I don`t see how 73-upleafs could work.The lift springs are made to end up the right length after desired arch.So,maybe,if you arched stock 73-up leafs 10" they would end up short enough to use in a pre-73.But,10" lift springs you buy are made from longer stock to end up the proper length after arching. __________________ "BUILDING A BETTER WAY TO SERVE THE USA"......67/72......"The New Breed" GMC '67 C1500 Wideside Super Custom SWB: 327/M22/3.42 posi.........."The '67" (project) GMC '72 K2500 Wideside Sierra Custom Camper: 350/TH350/4.10 Power-Lok..."The '72" (rolling) Tim "Don't call me a redneck. I'm a rough cut country gentleman" R.I.P. ~ East Side Low Life ~ El Jay ~ 72BLUZ ~ Fasteddie69 ~ Ron586 ~ 67ChevyRedneck ~ Grumpy Old Man ~

09-18-2008, 12:05 AM	#5
Captainfab 60-66 Nut Join Date: Mar 2007 Location: Coeur d'Alene, Idaho Posts: 23,254	Re: Re-arching Springs? I would suggest using a set of 52" and 56" springs for the '73-'87's in a 6" lift. Then combine these with the B52's and a rear shackle flip from diy4x.com. This should give you about 10" of lift, but of course it is a bit of work. __________________ Power Steering Box Adapter Plates For Sale HERE Power Brake Booster Adapter Brackets For Sale '63-'66 HERE and '67-'72 HERE and '60-'62 HERE and "60-'62 with clutch HERE Rear Disc Brake Brackets For Sale. Impala SS calipers HERE Camaro Calipers HERE D52 Calipers HERE 6 Lug HERE Hydroboost Mounting Plates HERE

09-18-2008, 07:14 AM	#6
special-K Special Order Join Date: Nov 2004 Location: Mt Airy, MD Posts: 85,851	Re: Re-arching Springs? 10" of lift is alot of work no matter what way you go.I agree with Captainfab.That would be the way to go.I`d want longer springs for that much arch. __________________ "BUILDING A BETTER WAY TO SERVE THE USA"......67/72......"The New Breed" GMC '67 C1500 Wideside Super Custom SWB: 327/M22/3.42 posi.........."The '67" (project) GMC '72 K2500 Wideside Sierra Custom Camper: 350/TH350/4.10 Power-Lok..."The '72" (rolling) Tim "Don't call me a redneck. I'm a rough cut country gentleman" R.I.P. ~ East Side Low Life ~ El Jay ~ 72BLUZ ~ Fasteddie69 ~ Ron586 ~ 67ChevyRedneck ~ Grumpy Old Man ~

09-18-2008, 02:34 PM	#7
68Maniac Registered User Join Date: Sep 2008 Location: Lufkin, Texas Posts: 51	Re: Re-arching Springs? Thanks for the quick replys, I am getting a bid on the Alcan springs. But I really like the diy4x setup that you guys have spoke about and am researching it now.How tough is it moving the diy4x rear shackle eye hanger?

09-18-2008, 02:43 PM	#8
68Maniac Registered User Join Date: Sep 2008 Location: Lufkin, Texas Posts: 51	Re: Re-arching Springs? Will the truck "flex" with this setup? I am going to be running 39.5 boggers and don't want the tires getting into the body. More lift?



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