1977 vs. 1984 Suspension - The 1947 - Present Chevrolet & GMC Truck Message Board Network

MobSled · 12-07-2009, 12:27 AM

Wondering if the lowering kit from a 1984 shortbed would fit on a 1977 longbed???? Shakles, shock extenders, leaf pack, blocks, U bolts, springs, swaybar etc....

bigblock73 · 12-07-2009, 12:30 AM

Spindles will likely be different (1" and 1.25" rotors), and there are two different length leaf springs...other than that, most should be interchangable.

MobSled · 12-07-2009, 12:33 AM

Quote:

Originally Posted by bigblock73

Spindles will likely be different (1" and 1.25" rotors), and there are two different length leaf springs...other than that, most should be interchangable.

No spindles included, just 3 inch lowering springs. So the leafsprings wont fit from a short onto a longbed?

flamingbig10 · 12-07-2009, 12:36 AM

no just depends if there 52" or 56" long

MobSled · 12-07-2009, 12:38 AM

Quote:

Originally Posted by flamingbig10

no just depends if there 52" or 56" long

I`m assuming 56" will fit and the 52s wont?

bigblock73 · 12-07-2009, 12:38 AM

The length of the bed has nothing to do with it (as previously mentioned, there were two diff length available)...you will have to measure to be sure.

bigblock73 · 12-07-2009, 12:40 AM

They will both physically fit, but you'll have to relocate the rear hangers if you change the length of the springs in your truck.

MobSled · 12-07-2009, 12:40 AM

Quote:

Originally Posted by bigblock73

The length of the bed has nothing to do with it (as previously mentioned, there were two diff length available)...you will have to measure to be sure.

I get it pretty much meassure my leafs and get the meassurements off the 84...if its the same length it`ll fit.

MobSled · 12-07-2009, 12:41 AM

Quote:

Originally Posted by bigblock73

They will both fit, but you'll have to relocate the rear hangers if you change the length of the springs in your truck.

Gotcha...everything else as in the front lowering springs is the same and will go right on?

bigblock73 · 12-07-2009, 12:42 AM

Quote:

Originally Posted by MobSled

I get it pretty much meassure my leafs and get the meassurements off the 84...if its the same length it`ll fit.

Bingo! An easy way is to look and see where your rear hangers sit on the frame. If they are tight to the bumper brackets, you have the long springs...if there is about 4" between the hanges and bumper brackets, you have the short springs. Measuring is always best, but this will tell you easily as well.

MobSled · 12-07-2009, 12:43 AM

Anything on the front lower swaybar?

MobSled · 12-07-2009, 12:43 AM

Quote:

Originally Posted by bigblock73

Bingo! An easy way is to look and see where your rear hangers sit on the frame. If they are tight to the bumper brackets, you have the long springs...if there is about 4" between the hanges and bumper brackets, you have the short springs. Measuring is always best, but this will tell you easily as well.

No matter what I can make both lengths fit by relocating the hangers?

bigblock73 · 12-07-2009, 12:44 AM

Quote:

Originally Posted by MobSled

Gotcha...everything else as in the front lowering springs is the same and will go right on?

Should. The only thing is the sway bar...if both trucks have one, then easy...if your truck doesn't, you will need to remove the mounts on the donor (they are riveted on).

bigblock73 · 12-07-2009, 12:44 AM

Quote:

Originally Posted by MobSled

No matter what I can make both lengths fit by relocating the hangers?

Yes, but it is a PITA. They are riveted on.

MobSled · 12-07-2009, 12:48 AM

Wow you guys are great...love this forum. Everytime I needed answers I got them in matter of minutes. Really appreciate all the help.

kevinr1970 · 12-07-2009, 05:38 PM

Not to sidetrack, but why is there two different springs?
Is it 1/2 ton vs. 3/4 ton, 1/2 vs HD 1/2 (or "big10") or is it something else?

12-07-2009, 12:27 AM	#1
MobSled Registered User Join Date: Oct 2009 Location: Downey, CA Posts: 110	1977 vs. 1984 Suspension Wondering if the lowering kit from a 1984 shortbed would fit on a 1977 longbed???? Shakles, shock extenders, leaf pack, blocks, U bolts, springs, swaybar etc....

12-07-2009, 12:30 AM	#2
bigblock73 yeller Join Date: Oct 2001 Location: Twin Cities Posts: 13,824	Re: 1977 vs. 1984 Suspension Spindles will likely be different (1" and 1.25" rotors), and there are two different length leaf springs...other than that, most should be interchangable. __________________ Jeff 73-87.com 73-87.com Facebook page 73-87 cab corner 6x9 speaker brackets for sale 67-72 cab corner speaker brackets for sale 47-54 cab corner speaker brackets for sale

12-07-2009, 12:36 AM	#4
flamingbig10 6.0 powered square Join Date: Feb 2008 Location: Mesquite texas Posts: 3,459	Re: 1977 vs. 1984 Suspension no just depends if there 52" or 56" long __________________ Aaron 1980 c-10 short bed lowered, cammed 6.0, 4l80e 3600 stall, smp tune, wilwoods, and flames best time so far best et 7.86 @87 on motor 7.57 90 on a 75 shot Build http://67-72chevytrucks.com/vboard/s...d.php?t=283326

12-07-2009, 12:38 AM	#6
bigblock73 yeller Join Date: Oct 2001 Location: Twin Cities Posts: 13,824	Re: 1977 vs. 1984 Suspension The length of the bed has nothing to do with it (as previously mentioned, there were two diff length available)...you will have to measure to be sure. __________________ Jeff 73-87.com 73-87.com Facebook page 73-87 cab corner 6x9 speaker brackets for sale 67-72 cab corner speaker brackets for sale 47-54 cab corner speaker brackets for sale Last edited by bigblock73; 12-07-2009 at 12:39 AM.

12-07-2009, 12:40 AM	#7
bigblock73 yeller Join Date: Oct 2001 Location: Twin Cities Posts: 13,824	Re: 1977 vs. 1984 Suspension They will both physically fit, but you'll have to relocate the rear hangers if you change the length of the springs in your truck. __________________ Jeff 73-87.com 73-87.com Facebook page 73-87 cab corner 6x9 speaker brackets for sale 67-72 cab corner speaker brackets for sale 47-54 cab corner speaker brackets for sale Last edited by bigblock73; 12-07-2009 at 12:40 AM.

12-07-2009, 12:43 AM	#11
MobSled Registered User Join Date: Oct 2009 Location: Downey, CA Posts: 110	Re: 1977 vs. 1984 Suspension Anything on the front lower swaybar?

12-07-2009, 12:48 AM	#15
MobSled Registered User Join Date: Oct 2009 Location: Downey, CA Posts: 110	Re: 1977 vs. 1984 Suspension Wow you guys are great...love this forum. Everytime I needed answers I got them in matter of minutes. Really appreciate all the help.

12-07-2009, 05:38 PM	#16
kevinr1970 Senior Member Join Date: Aug 2004 Location: Everett, WA Posts: 2,316	Re: 1977 vs. 1984 Suspension Not to sidetrack, but why is there two different springs? Is it 1/2 ton vs. 3/4 ton, 1/2 vs HD 1/2 (or "big10") or is it something else? __________________ 2009 Honda Fit CfC (bsf 44.9 mpg) 2000 Tahoe Limited 1991 GMC CrewCab Dually 2wd, will end up swb, not dually and replace CCswb below 1991 GMC CrewCab Dually 4x4, just going to fix things up for now 1982/1989 K5/GMC Jimmy 2wd 1987 GMC 1/2 ton swb 2wd Crew (sold)



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