Lower spring hangers and scissor shackles - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Joey-D · 01-22-2005, 11:54 PM

My truck is undergoing a new build up; I am doing alot of things including 2 1/2 ton axles, military tires, clocking the transfer case, blah blah blah.. Anyway I doing a shackle flip in the rear using front rear spring hangers (still need some if someone has them cheap) and still need 4" up front. Decided to do a lowered spring mount and longer rear shackles (front end) I have many ideas for the spring hangers but would like to see some complete. Anyone? Also has anyone used scissor shackles in front for more articulation. Comments?

*1FaastC10* · 01-23-2005, 12:02 AM

how about swapping to 52" rear springs up front? that should give you about 4" of lift.

Joey-D · 01-23-2005, 12:55 AM

I already have the 8" springs and want another 4" so the top loaders and oil pan don't ever meet

**JIMs70GMC** · 01-23-2005, 10:45 AM

I'm going to be replacing the rear front spring hangers on my 70 to the 71 type. The 70 and earlier don't drop below the frame as far as the 71s. When I get them off do you want them for shipping only?

Joey-D · 01-23-2005, 12:38 PM

I think, will those work for my shackle flip, I mean 4". You said they don't hang down as far, would that give less than 4"?

*1FaastC10* · 01-23-2005, 01:25 PM

Quote:

Originally Posted by Joey-D

I already have the 8" springs and want another 4" so the top loaders and oil pan don't ever meet

uhm, ok... so get some 12" springs

moving the hangers can be very dangerous if not done properly.

*1FaastC10* · 01-23-2005, 01:26 PM

Quote:

Originally Posted by Joey-D

I think, will those work for my shackle flip, I mean 4". You said they don't hang down as far, would that give less than 4"?

you cant shackle flip the front end, its already "flipped".

**JIMs70GMC** · 01-23-2005, 02:41 PM

I believe it would move it down a fair amount. You need an overall drop of the spring end of 8" to get 4" of lift. I'll take pic of it tomorrow.

*1FaastC10* · 01-23-2005, 05:23 PM

Quote:

Originally Posted by JIMs70GMC

I believe it would move it down a fair amount. You need an overall drop of the spring end of 8" to get 4" of lift. I'll take pic of it tomorrow.

that much drop on only one end of the spring, you might as well go ahead and kiss your driveshaft goodbye, the angles are gonna be so far off.

what's wrong with the 12" spring idea? you've already got 8" of lift, its not like you're used to a lot of articulation anyways.

Joey-D · 01-23-2005, 05:42 PM

Front axles drop springs hangers and front spring rear shackles longer for 4" more lift = $25 in steel; 12" fronts springs = $400 minimium. Front driveshaft angle, no problem...Duece and a half axles that are top loader, pinion flange is 9" above the axle. Driveshaft angle will be barely any at all. Also I am thinking about scissor shackles up front or rear of spring (still doing homework) for more articulation.
The rear will be my 8" springs with the stock rear shackle hanger removed and a front rear spring hanger used. Poorman ORD shackle flip.
Does that clear up the confusion?
The point of this post is to find info on droping the front spring front mounts and learn about the scissor shackle; I know the scissor shackle will give me great articulation, even with stiff springs, but how does it keep the axle centered and do you do it on the front front spring mount and leave the factory style in back of the front spring, or solid mount the front front spring and do the scissor in back front spring shackle? Questions questions....

Joey-D · 01-23-2005, 05:43 PM

I will drop the front mount and also elongate the rear shackles. Evenly or almost even for the driveshaft angle. (Front Axle)

**JIMs70GMC** · 01-23-2005, 09:01 PM

Are you talking about revolver shackles? I don't know if your truck would be safe on the road anymore if you do that to the front mount of the front spring, that is probably a trail only mod. As for the shackle flip, you could remove the shim from the spring pack if it had one.

Joey-D · 01-23-2005, 09:47 PM

why would I want to remove a shim if I had one?

**JIMs70GMC** · 01-24-2005, 07:15 AM

The shackle flip will point the pinion up a lot, more than you'll need for driveshaft angle correction. Removing the shim will allow it to point down some.

**special-K** · 01-24-2005, 11:40 AM

I`d just fab spring mounts to sit 4" below original location on frame,solid.You don`t want to risk lateral movement in the front-end.I built a`71 GMC with 2 1/4ton axles for mud-bogging.That`s what I did.I drove it on the street at hi-way speed,no problem.

Joey-D · 01-24-2005, 08:13 PM

thanks for the info

**Richard** · 01-25-2005, 05:03 AM

I am not sure about a scissor shackle but I do know that the revolver type shackles are not recommended for the front springs on street driven vehicles. My brothers jeep had the revolver shackles on the rear springs but used what is called a buggy spring for the front. Basically a short leaf pack mounted to the frame at the shackle location. This allowed the shackle to pull away from the frame and twist. At rest the pack is against the frame. The jeep still scared the crap out of me at highway speeds. For a front spring hanger drop I would look at ORD's straight axle conversion for the late model Chevys. It is a bolt on unit I have seen a couple of trucks around here with the conversion.

01-22-2005, 11:54 PM	#1
Joey-D City's Articulation Ramp Join Date: Jan 2004 Location: St. Louis Missouri Posts: 452	Lower spring hangers and scissor shackles My truck is undergoing a new build up; I am doing alot of things including 2 1/2 ton axles, military tires, clocking the transfer case, blah blah blah.. Anyway I doing a shackle flip in the rear using front rear spring hangers (still need some if someone has them cheap) and still need 4" up front. Decided to do a lowered spring mount and longer rear shackles (front end) I have many ideas for the spring hangers but would like to see some complete. Anyone? Also has anyone used scissor shackles in front for more articulation. Comments? __________________ 85 K90 SWB Rockwells 46x19.5 on double beadlocks 20" lift 305/sm465/NP208 Toy 00 Silverado 2wd SWB 4.8 auto 3/4 drop slamair bags esclade rims Daily Driver 06 Harley Sporster 883 low 19?? Zamboni, Really I own a Zamboni! "If your gonna be stupid, then you better be tough."

01-23-2005, 12:55 AM	#3
Joey-D City's Articulation Ramp Join Date: Jan 2004 Location: St. Louis Missouri Posts: 452	I already have the 8" springs and want another 4" so the top loaders and oil pan don't ever meet __________________ 85 K90 SWB Rockwells 46x19.5 on double beadlocks 20" lift 305/sm465/NP208 Toy 00 Silverado 2wd SWB 4.8 auto 3/4 drop slamair bags esclade rims Daily Driver 06 Harley Sporster 883 low 19?? Zamboni, Really I own a Zamboni! "If your gonna be stupid, then you better be tough."

01-23-2005, 10:45 AM	#4
JIMs70GMC user # 2756 Join Date: Jun 2001 Location: Chesapeake, Virginia Posts: 4,612	I'm going to be replacing the rear front spring hangers on my 70 to the 71 type. The 70 and earlier don't drop below the frame as far as the 71s. When I get them off do you want them for shipping only? __________________ 1970 K25, 8' stepside bed 350/465/205 44 up front, 60 in the rear 4.10s rolling on 33" Dunlop MTs 1986 K5, 350/465/208 Dana 60/14 bolt from a cucv 36" Super Swampers TSL/SX 1983 K20 w/ CUCV axles, 350/700R4/208 sitting on 37" Goodyears 1986 M1031 6.2 diesel, TH400/NP205 locker in the rear and a LS in the front, all stock for now..... 1986 K30, 350/400/205 dana 60 and 14 bolt. I kept the drivetrain. Body/bad and chassis are gone. 1981 K30, 350/465/205 dana 60 and dually 14 bolt. Has a G80, and a flat bed. Going to replace the flat bed. 1985 K20, 350/400/208 10 bolt and SF 14 bolt. I wonder where I can find some 1 tons. Hmmmmm

01-23-2005, 12:38 PM	#5
Joey-D City's Articulation Ramp Join Date: Jan 2004 Location: St. Louis Missouri Posts: 452	I think, will those work for my shackle flip, I mean 4". You said they don't hang down as far, would that give less than 4"? __________________ 85 K90 SWB Rockwells 46x19.5 on double beadlocks 20" lift 305/sm465/NP208 Toy 00 Silverado 2wd SWB 4.8 auto 3/4 drop slamair bags esclade rims Daily Driver 06 Harley Sporster 883 low 19?? Zamboni, Really I own a Zamboni! "If your gonna be stupid, then you better be tough."

01-23-2005, 02:41 PM	#8
JIMs70GMC user # 2756 Join Date: Jun 2001 Location: Chesapeake, Virginia Posts: 4,612	I believe it would move it down a fair amount. You need an overall drop of the spring end of 8" to get 4" of lift. I'll take pic of it tomorrow. __________________ 1970 K25, 8' stepside bed 350/465/205 44 up front, 60 in the rear 4.10s rolling on 33" Dunlop MTs 1986 K5, 350/465/208 Dana 60/14 bolt from a cucv 36" Super Swampers TSL/SX 1983 K20 w/ CUCV axles, 350/700R4/208 sitting on 37" Goodyears 1986 M1031 6.2 diesel, TH400/NP205 locker in the rear and a LS in the front, all stock for now..... 1986 K30, 350/400/205 dana 60 and 14 bolt. I kept the drivetrain. Body/bad and chassis are gone. 1981 K30, 350/465/205 dana 60 and dually 14 bolt. Has a G80, and a flat bed. Going to replace the flat bed. 1985 K20, 350/400/208 10 bolt and SF 14 bolt. I wonder where I can find some 1 tons. Hmmmmm

01-23-2005, 12:02 AM	#2
1FaastC10 Account Suspended Join Date: Oct 2002 Location: Elkhart, IN Posts: 6,399	how about swapping to 52" rear springs up front? that should give you about 4" of lift.

01-23-2005, 05:42 PM	#10
Joey-D City's Articulation Ramp Join Date: Jan 2004 Location: St. Louis Missouri Posts: 452	Front axles drop springs hangers and front spring rear shackles longer for 4" more lift = $25 in steel; 12" fronts springs = $400 minimium. Front driveshaft angle, no problem...Duece and a half axles that are top loader, pinion flange is 9" above the axle. Driveshaft angle will be barely any at all. Also I am thinking about scissor shackles up front or rear of spring (still doing homework) for more articulation. The rear will be my 8" springs with the stock rear shackle hanger removed and a front rear spring hanger used. Poorman ORD shackle flip. Does that clear up the confusion? The point of this post is to find info on droping the front spring front mounts and learn about the scissor shackle; I know the scissor shackle will give me great articulation, even with stiff springs, but how does it keep the axle centered and do you do it on the front front spring mount and leave the factory style in back of the front spring, or solid mount the front front spring and do the scissor in back front spring shackle? Questions questions.... __________________ 85 K90 SWB Rockwells 46x19.5 on double beadlocks 20" lift 305/sm465/NP208 Toy 00 Silverado 2wd SWB 4.8 auto 3/4 drop slamair bags esclade rims Daily Driver 06 Harley Sporster 883 low 19?? Zamboni, Really I own a Zamboni! "If your gonna be stupid, then you better be tough."

01-23-2005, 05:43 PM	#11
Joey-D City's Articulation Ramp Join Date: Jan 2004 Location: St. Louis Missouri Posts: 452	I will drop the front mount and also elongate the rear shackles. Evenly or almost even for the driveshaft angle. (Front Axle) __________________ 85 K90 SWB Rockwells 46x19.5 on double beadlocks 20" lift 305/sm465/NP208 Toy 00 Silverado 2wd SWB 4.8 auto 3/4 drop slamair bags esclade rims Daily Driver 06 Harley Sporster 883 low 19?? Zamboni, Really I own a Zamboni! "If your gonna be stupid, then you better be tough."

01-23-2005, 09:01 PM	#12
JIMs70GMC user # 2756 Join Date: Jun 2001 Location: Chesapeake, Virginia Posts: 4,612	Are you talking about revolver shackles? I don't know if your truck would be safe on the road anymore if you do that to the front mount of the front spring, that is probably a trail only mod. As for the shackle flip, you could remove the shim from the spring pack if it had one. __________________ 1970 K25, 8' stepside bed 350/465/205 44 up front, 60 in the rear 4.10s rolling on 33" Dunlop MTs 1986 K5, 350/465/208 Dana 60/14 bolt from a cucv 36" Super Swampers TSL/SX 1983 K20 w/ CUCV axles, 350/700R4/208 sitting on 37" Goodyears 1986 M1031 6.2 diesel, TH400/NP205 locker in the rear and a LS in the front, all stock for now..... 1986 K30, 350/400/205 dana 60 and 14 bolt. I kept the drivetrain. Body/bad and chassis are gone. 1981 K30, 350/465/205 dana 60 and dually 14 bolt. Has a G80, and a flat bed. Going to replace the flat bed. 1985 K20, 350/400/208 10 bolt and SF 14 bolt. I wonder where I can find some 1 tons. Hmmmmm

01-23-2005, 09:47 PM	#13
Joey-D City's Articulation Ramp Join Date: Jan 2004 Location: St. Louis Missouri Posts: 452	why would I want to remove a shim if I had one? __________________ 85 K90 SWB Rockwells 46x19.5 on double beadlocks 20" lift 305/sm465/NP208 Toy 00 Silverado 2wd SWB 4.8 auto 3/4 drop slamair bags esclade rims Daily Driver 06 Harley Sporster 883 low 19?? Zamboni, Really I own a Zamboni! "If your gonna be stupid, then you better be tough."

01-24-2005, 07:15 AM	#14
JIMs70GMC user # 2756 Join Date: Jun 2001 Location: Chesapeake, Virginia Posts: 4,612	The shackle flip will point the pinion up a lot, more than you'll need for driveshaft angle correction. Removing the shim will allow it to point down some. __________________ 1970 K25, 8' stepside bed 350/465/205 44 up front, 60 in the rear 4.10s rolling on 33" Dunlop MTs 1986 K5, 350/465/208 Dana 60/14 bolt from a cucv 36" Super Swampers TSL/SX 1983 K20 w/ CUCV axles, 350/700R4/208 sitting on 37" Goodyears 1986 M1031 6.2 diesel, TH400/NP205 locker in the rear and a LS in the front, all stock for now..... 1986 K30, 350/400/205 dana 60 and 14 bolt. I kept the drivetrain. Body/bad and chassis are gone. 1981 K30, 350/465/205 dana 60 and dually 14 bolt. Has a G80, and a flat bed. Going to replace the flat bed. 1985 K20, 350/400/208 10 bolt and SF 14 bolt. I wonder where I can find some 1 tons. Hmmmmm

01-24-2005, 11:40 AM	#15
special-K Special Order Join Date: Nov 2004 Location: Mt Airy, MD Posts: 85,851	I`d just fab spring mounts to sit 4" below original location on frame,solid.You don`t want to risk lateral movement in the front-end.I built a`71 GMC with 2 1/4ton axles for mud-bogging.That`s what I did.I drove it on the street at hi-way speed,no problem. __________________ "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 ~

01-24-2005, 08:13 PM	#16
Joey-D City's Articulation Ramp Join Date: Jan 2004 Location: St. Louis Missouri Posts: 452	thanks for the info __________________ 85 K90 SWB Rockwells 46x19.5 on double beadlocks 20" lift 305/sm465/NP208 Toy 00 Silverado 2wd SWB 4.8 auto 3/4 drop slamair bags esclade rims Daily Driver 06 Harley Sporster 883 low 19?? Zamboni, Really I own a Zamboni! "If your gonna be stupid, then you better be tough."

01-25-2005, 05:03 AM	#17
Richard Senior Member Join Date: Dec 1999 Location: Southern California Posts: 2,906	I am not sure about a scissor shackle but I do know that the revolver type shackles are not recommended for the front springs on street driven vehicles. My brothers jeep had the revolver shackles on the rear springs but used what is called a buggy spring for the front. Basically a short leaf pack mounted to the frame at the shackle location. This allowed the shackle to pull away from the frame and twist. At rest the pack is against the frame. The jeep still scared the crap out of me at highway speeds. For a front spring hanger drop I would look at ORD's straight axle conversion for the late model Chevys. It is a bolt on unit I have seen a couple of trucks around here with the conversion. __________________ Richard 1972 K10 Custom Deluxe SWB Fleetside My build https://67-72chevytrucks.com/vboard/...d.php?t=800746



Register or Log In To remove these advertisements.

Register or Log In To remove these advertisements.