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Old 11-02-2014, 12:17 AM   #1
1991monstersuburban
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60-66 lift springs

im having a hard time finding a lift kit for a k10 suburban and was wondering if a lift kit for a 73-87 will fit. Thanks
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Old 11-02-2014, 09:58 AM   #2
RANDY COX
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Re: 60-66 lift springs

You might get answers faster if you post this in the 4x4 section. Specify yr BURB you have.
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Old 11-02-2014, 11:16 PM   #3
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Re: 60-66 lift springs

There are no lift springs specifically for a 60-66. Leafs from a 70-72 k10 are the same length, and are available in popular lifts. The difference will be the eye size and the bushing types. 66 uses all bronze bushing, and a threaded bolts on the front spring shackle. 72 uses standard rubber or poly bushings.
I converted to the newer type when I built mine.
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Old 11-03-2014, 12:59 AM   #4
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Re: 60-66 lift springs

When you go with either '70-'72 or '73-'87 lift springs, you will also have to change the spring hangers to accommodate the springs.
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Old 11-03-2014, 08:16 AM   #5
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Re: 60-66 lift springs

Quote:
Originally Posted by Captainfab View Post
When you go with either '70-'72 or '73-'87 lift springs, you will also have to change the spring hangers to accommodate the springs.
That's what I did on my 61. Worked just fine.
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Old 12-19-2018, 06:38 PM   #6
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Re: 60-66 lift springs

So does the 67-72 or 73-87 give the same amount of lift or do you need a 6 inch to gain 4 on a 60-66?
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Old 12-20-2018, 05:00 PM   #7
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Re: 60-66 lift springs

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Originally Posted by raylube View Post
So does the 67-72 or 73-87 give the same amount of lift or do you need a 6 inch to gain 4 on a 60-66?
What I do know is a 4" Rancho will lift a K5 6"!
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Old 07-11-2019, 09:21 AM   #8
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Re: 60-66 lift springs

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Originally Posted by Captainfab View Post
When you go with either '70-'72 or '73-'87 lift springs, you will also have to change the spring hangers to accommodate the springs.
so what specifically is different? I've managed to find lift springs from Tuff Country and Procomp that are 52" long and 2.5" wide, which is the specs of whats on my 64 K10 4x4's rear...

why won't they fit?
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Old 07-12-2019, 09:04 AM   #9
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Re: 60-66 lift springs

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Originally Posted by pheengurs View Post
so what specifically is different? I've managed to find lift springs from Tuff Country and Procomp that are 52" long and 2.5" wide, which is the specs of whats on my 64 K10 4x4's rear...

why won't they fit?
The 60-66 4x4 uses a greaseable pin and bushing to mount the springs, the newer trucks use bolts to hold them in.
I don't believe the holes in the springs are the right size. That's why I used the springs hangers off of a square body 4x4 for the rear and my machinist buddy modified the original front hangers to accept the standard bolts to mount the front springs in my truck.
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Old 07-12-2019, 09:28 AM   #10
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Re: 60-66 lift springs

thanks 62shortstep!

so you mean the later model spring setups have larger shaft diameter bolts, and non greasable???


why manufacturers wouldn't just build a bushing to fit our trucks rather than not sell their product at all, baffles me...

or simply sell an undrilled bushing and let the user drill out the size needed...
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Old 07-12-2019, 09:55 AM   #11
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Re: 60-66 lift springs

Quote:
Originally Posted by pheengurs View Post
thanks 62shortstep!

so you mean the later model spring setups have larger shaft diameter bolts, and non greasable???


why manufacturers wouldn't just build a bushing to fit our trucks rather than not sell their product at all, baffles me...

or simply sell an undrilled bushing and let the user drill out the size needed...
Actually the later model spring bolts are smaller and non greaseable.

I called one of the lift companies in 2006 and they told me not enough interest for the older stuff.

Its really not that hard to do, here is a link to my build.
http://67-72chevytrucks.com/vboard/s...d.php?t=333036
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Old 07-13-2019, 12:31 AM   #12
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Re: 60-66 lift springs

62 short I saw your thread about the rear and front springs. Just wondering what you did as far as the front spring bushing. Square body bushings are around 3.5 inches and the 60 66 hangers are 2.5 inches.did you use a poly bushing and trim the sides down? Also what did you do to convert the front spring shackles and rear hangers? Thanks.
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Old 07-13-2019, 09:24 AM   #13
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Re: 60-66 lift springs

[QUOTE=62 short step;8557258]Actually the later model spring bolts are smaller and non greaseable.


so the difference between a 60-66 factory 52" x 2.5" rear leaf spring and a 67-73 (which use the same length and width springs?) is the bolt size ???

why do you need to change spring hangars, if it's just a bolt size difference?


I feel like this should be a no brainer and make sense but it doesn't.


I'm just trying to get a mental picture of why a guy can't bolt

https://www.summitracing.com/int/par...9670/overview/
or
https://www.summitracing.com/int/par...3311/overview/

on to his 1964 chev k10 4x4 with it's factory spring hangars in the rear...
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Old 07-13-2019, 04:32 PM   #14
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Re: 60-66 lift springs

The spring bushing on those spring from summit are 3 inches wide with a 5/8 bolt hole.the spring hanger bolt when tight will clamp the hanger to the rubber or poly sleeve bushing. On the stock set up it uses a center pin with bronze bushing that floats between the hanger. The eyes of the stock springs are smaller so the 1.5 inch bushings from the aftermarket or stock 67 and newer springs cannot be used.
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Old 07-14-2019, 01:32 PM   #15
pheengurs
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Re: 60-66 lift springs

Quote:
Originally Posted by raylube View Post
The spring bushing on those spring from summit are 3 inches wide with a 5/8 bolt hole.the spring hanger bolt when tight will clamp the hanger to the rubber or poly sleeve bushing. On the stock set up it uses a center pin with bronze bushing that floats between the hanger. The eyes of the stock springs are smaller so the 1.5 inch bushings from the aftermarket or stock 67 and newer springs cannot be used.

geez... those two links from summit are supposed to be 2.5" wide springs...

I submitted a product question asking what the width of the spring perch area would be...

but I think perhaps I understand what you're saying based on the pic provided in this post here by MFC66: http://67-72chevytrucks.com/vboard/s...d.php?t=790205

basically our stock mount, because of it's cast metal and center pin design, cannot be modified to accept a bolt on spring?
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Old 07-14-2019, 01:45 PM   #16
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Re: 60-66 lift springs

The spring from summit is 2.5 inches wide it is the bushing only on those that is 3 inches wide with a 1.5 diameter bushing. Go to the post you linked and search the members that I added that have done spring swaps.

Last edited by raylube; 07-14-2019 at 02:00 PM.
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Old Yesterday, 09:27 AM   #17
pheengurs
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Re: 60-66 lift springs

Quote:
Originally Posted by raylube View Post
The spring from summit is 2.5 inches wide it is the bushing only on those that is 3 inches wide with a 1.5 diameter bushing. Go to the post you linked and search the members that I added that have done spring swaps.
thanks Raylube, I'll check those posts out... but basically you're telling me that I need to replace the spring perches, correct?
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sm420 trans / t221 tcase / corp 10 front axle / corp 12 rear axle / 3.73 gears
rolling on 33x12x15 tires on 6 lug rims.
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Old Today, 01:06 AM   #18
raylube
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Re: 60-66 lift springs

Yes if going with newer springs will need newer hangers
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