Rear leaf arch 4X4-4X2 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

GMCMAX · 01-20-2006, 12:13 AM

What's the difference between the arch on 4X4 vs 4X2 rear leaf springs?
I converted my 68 GMC 2wd to 4wd. The front axle and springs are from a 70 blazer, as is the t/case and 4 speed. The rear springs are the 2wd ones the truck came with, but I had to use 4" blocks in the rear to bring it level with the stock front 4wd suspension. Iwould like to put a 4" lift on it, but with the blocks in the back, more blocks aren't the answer. Would the rear leaves from a 4X4 make it right? And yes, adding the 4X4 front axle to the 2wd frame without another to look at or measure was a PITA, but it all works fine.

67-72williso · 01-20-2006, 09:45 PM

You need the rear spring, front hangers I have. They are off a 68 K-20. That will set the rear at the rite heights for 4X4. The one on the right is the 68 4X4.
Later Willis

GMCMAX · 01-20-2006, 11:47 PM

Willis,
You say I need the set you have, is this a set like you used on yours or a set you have and want to get rid of?
Thanks for the info.......
Max

67-72williso · 01-21-2006, 06:59 AM

Max
Are your frame rails parallel or do they bow out at the rear axle area? These are off a parallel (4X4) so you might have to work on them a little that way. The heights will be correct thow. If you want them $25.00 to your door.
Later Willis

GMCMAX · 01-21-2006, 11:03 AM

I'll go check the frame here later, but most likely I'll take them regardless,just need the buying info.
Thanks again.....
Max

67-72williso · 01-21-2006, 08:34 PM

Max
One more thing I just thought of to is the spring width. 67-68 4X4 are 3" wide at the hanger area I`m gessing yours are 2 1/4". I gess you could use spacers there.
Later Willis

GMCMAX · 01-21-2006, 08:53 PM

Willis,
Yeah, it has zigzag frame and 2 1/2" springs....
I'll still buy your hangers and fab to fit.
Need your info
Thanks
Max

**special-K** · 01-22-2006, 10:54 AM

The wider perches might help to adjust to the difference in frames.Another thought is there are shackle reversal hangers that give 4 or 6 inches of lift.They`re a couple hundred bucks.But if those perches don`t do the trick...
You say your lifting the truck 4",also,right?Either way,you could get away from blocks with these.BTW,welcome and nice truck.

01-20-2006, 12:13 AM	#1
GMCMAX Active Member Join Date: Jan 2006 Location: Lower Mid-East Ca. Posts: 326	Rear leaf arch 4X4-4X2 What's the difference between the arch on 4X4 vs 4X2 rear leaf springs? I converted my 68 GMC 2wd to 4wd. The front axle and springs are from a 70 blazer, as is the t/case and 4 speed. The rear springs are the 2wd ones the truck came with, but I had to use 4" blocks in the rear to bring it level with the stock front 4wd suspension. Iwould like to put a 4" lift on it, but with the blocks in the back, more blocks aren't the answer. Would the rear leaves from a 4X4 make it right? And yes, adding the 4X4 front axle to the 2wd frame without another to look at or measure was a PITA, but it all works fine. __________________ Never try to teach a pig to sing; it wastes your time and annoys the pig! Gets More Chicks My lugnuts require more torque than your honda makes! 68 GMC, 4X4 conversion w/73 k20 running gear and springs, 350 4spd, 4.10's, D44 powerlok front, 14BFF govlock rear, 33" tires, lifted 4".

01-20-2006, 09:45 PM	#2
67-72williso Junk/Daily Driver Club Join Date: Feb 2004 Location: Manheim, PA 17545 Posts: 253	Re: Rear leaf arch 4X4-4X2 You need the rear spring, front hangers I have. They are off a 68 K-20. That will set the rear at the rite heights for 4X4. The one on the right is the 68 4X4. Later Willis Attached Images __________________ Daily Driver: 1970 C-20 400 sbc,sm-465,Dana 61 one ton SRW rear, 3.07 gears, locker. There are three kinds of people: those who make things happen, those who watch things happen, and those who have no idea what happened! Last edited by 67-72williso; 01-20-2006 at 09:50 PM.

01-20-2006, 11:47 PM	#3
GMCMAX Active Member Join Date: Jan 2006 Location: Lower Mid-East Ca. Posts: 326	Re: Rear leaf arch 4X4-4X2 Willis, You say I need the set you have, is this a set like you used on yours or a set you have and want to get rid of? Thanks for the info....... Max __________________ Never try to teach a pig to sing; it wastes your time and annoys the pig! Gets More Chicks My lugnuts require more torque than your honda makes! 68 GMC, 4X4 conversion w/73 k20 running gear and springs, 350 4spd, 4.10's, D44 powerlok front, 14BFF govlock rear, 33" tires, lifted 4".

01-21-2006, 06:59 AM	#4
67-72williso Junk/Daily Driver Club Join Date: Feb 2004 Location: Manheim, PA 17545 Posts: 253	Re: Rear leaf arch 4X4-4X2 Max Are your frame rails parallel or do they bow out at the rear axle area? These are off a parallel (4X4) so you might have to work on them a little that way. The heights will be correct thow. If you want them $25.00 to your door. Later Willis __________________ Daily Driver: 1970 C-20 400 sbc,sm-465,Dana 61 one ton SRW rear, 3.07 gears, locker. There are three kinds of people: those who make things happen, those who watch things happen, and those who have no idea what happened!

01-21-2006, 11:03 AM	#5
GMCMAX Active Member Join Date: Jan 2006 Location: Lower Mid-East Ca. Posts: 326	Re: Rear leaf arch 4X4-4X2 I'll go check the frame here later, but most likely I'll take them regardless,just need the buying info. Thanks again..... Max __________________ Never try to teach a pig to sing; it wastes your time and annoys the pig! Gets More Chicks My lugnuts require more torque than your honda makes! 68 GMC, 4X4 conversion w/73 k20 running gear and springs, 350 4spd, 4.10's, D44 powerlok front, 14BFF govlock rear, 33" tires, lifted 4".

01-21-2006, 08:34 PM	#6
67-72williso Junk/Daily Driver Club Join Date: Feb 2004 Location: Manheim, PA 17545 Posts: 253	Re: Rear leaf arch 4X4-4X2 Max One more thing I just thought of to is the spring width. 67-68 4X4 are 3" wide at the hanger area I`m gessing yours are 2 1/4". I gess you could use spacers there. Later Willis __________________ Daily Driver: 1970 C-20 400 sbc,sm-465,Dana 61 one ton SRW rear, 3.07 gears, locker. There are three kinds of people: those who make things happen, those who watch things happen, and those who have no idea what happened! Last edited by 67-72williso; 01-21-2006 at 08:35 PM.

01-21-2006, 08:53 PM	#7
GMCMAX Active Member Join Date: Jan 2006 Location: Lower Mid-East Ca. Posts: 326	Re: Rear leaf arch 4X4-4X2 Willis, Yeah, it has zigzag frame and 2 1/2" springs.... I'll still buy your hangers and fab to fit. Need your info Thanks Max __________________ Never try to teach a pig to sing; it wastes your time and annoys the pig! Gets More Chicks My lugnuts require more torque than your honda makes! 68 GMC, 4X4 conversion w/73 k20 running gear and springs, 350 4spd, 4.10's, D44 powerlok front, 14BFF govlock rear, 33" tires, lifted 4".

01-22-2006, 10:54 AM	#8
special-K Special Order Join Date: Nov 2004 Location: Mt Airy, MD Posts: 85,851	Re: Rear leaf arch 4X4-4X2 The wider perches might help to adjust to the difference in frames.Another thought is there are shackle reversal hangers that give 4 or 6 inches of lift.They`re a couple hundred bucks.But if those perches don`t do the trick... You say your lifting the truck 4",also,right?Either way,you could get away from blocks with these.BTW,welcome and nice truck. __________________ "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 ~

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode



Register or Log In To remove these advertisements.

Register or Log In To remove these advertisements.