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#1 |
Registered User
Join Date: Nov 2008
Location: Rowlett, TX
Posts: 863
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K30 Front Leaf Spring Help
Does anyone know what the factory front leaf springs under an '85 K30 look like? The frame I picked up for my build has a set on the front that really doesn't look stock....they are a 4-leaf pack. Here is a couple of pics...they seem to be maybe lift springs. Thanks in advance
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#2 |
Senior Member
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Location: Illinois
Posts: 2,957
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Re: K30 Front Leaf Spring Help
Not sure if this will help you or not but here is my 84 K30 C&C. It has 4 leafs on the front.
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Roy 85 Short Bed Silverado- Work in progress. http://67-72chevytrucks.com/vboard/s...d.php?t=564818 1987 R10 shortie |
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#3 |
Registered User
Join Date: Nov 2008
Location: Rowlett, TX
Posts: 863
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Re: K30 Front Leaf Spring Help
Those look similar....but still seem to have some lift to them.
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#4 |
Senior Member
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Location: Illinois
Posts: 2,957
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Re: K30 Front Leaf Spring Help
Mine look sprung out of shape to me. I would think for being a K30 there would be more leafs myself. Of course I am sure it depends on what the trucks GWVR or whatever it is, is rated at.
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Roy 85 Short Bed Silverado- Work in progress. http://67-72chevytrucks.com/vboard/s...d.php?t=564818 1987 R10 shortie |
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#5 |
Registered User
Join Date: Mar 2012
Location: edgartown mass
Posts: 852
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Re: K30 Front Leaf Spring Help
i will have to check mine but i think it only has 3 and its the hd gvw. could be wrong on the lelfs.
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1986 c20 "the hillbilly" 350 sm465 3.42gears 21mpg at 70mph 1985 k30 "the ice cream truck from hell" no rust az truck 197-8??? c30 "ramp truck" 454 1978 monte carlo 350 350th with 2.73 gears. no rust. sc car |
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#6 |
Registered User
Join Date: May 2009
Location: Motor City
Posts: 9,194
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Re: K30 Front Leaf Spring Help
I don't have time to read right now; see if it says something about how many leafs in here:
http://www.gmheritagecenter.com/docs...olet-Truck.pdf K
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Chevrolet Flint Assembly 1979-1986 GM Full Size Truck Engineering 1986 - 2019 Intro from an Old Assembly Guy: http://67-72chevytrucks.com/vboard/s...d.php?t=342926 My Pontiac story: http://forums.maxperformanceinc.com/...d.php?t=560524 Chevelle intro: http://www.superchevy.com/features/s...hevy-chevelle/ |
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#7 |
Registered User
Join Date: Nov 2008
Location: Rowlett, TX
Posts: 863
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Re: K30 Front Leaf Spring Help
I check those out a lot for info, but they dont ever list how many leafs....I wish they did though...thanks for the idea.
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#8 |
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Join Date: Aug 2009
Location: S.C.
Posts: 1,593
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Re: K30 Front Leaf Spring Help
Seems to me some on-line spring stores listed the number of leafs.
I was shopping for my old K-20, that had 3, listed the K-30 at 4. I did try 2 extra leafs. 8' snowplow only dropped the nose 1/2" and rode worse than a buckboard. Those 2 leafs are sitting on the scrap pile now.
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'86 C-30 dually, 454/tbh400 '73 K-20 350/350/205 (sold ![]() I'm kinda like duct tape- no real purpose, but handy to have around. |
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#9 |
Next!
Join Date: Jan 2003
Location: Eastern Pa.
Posts: 2,479
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Re: K30 Front Leaf Spring Help
The stock K30 military CUCVs have 3 springs in front. when its light I will get you pics of my 83 K30 and My 86 K30 dump.
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86 K30 CUCV M1028A1 86 K30 CUCV M1028a2 dually 86 K30 C&C 6.2 4:56s, 4M, 11,000 gvw, ex fire truck, now lowboy dump More square bodies and CUCVs than I care to admit to 2020 Silverado K3500HD Work truck |
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#10 |
Registered User
Join Date: Mar 2012
Location: stafford springs ct
Posts: 149
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Re: K30 Front Leaf Spring Help
i had a similar question when i first bought my truck, brought it to a guy i know whose seen, and owned, and worked on a lot of these trucks and he says that original springs will have a negative arch and lift springs are either flat or have a positive curve in them, depending on the amount of lift. installed in the truck of course. hope this helps.
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1977 srw cc lb 396/700r/4:11's/6'' bds lift/ 35's. sold 1986 suburban 350/700r/3:73's 31's: parted out. 1980 silverado swb 5.3/700r/ 2'' drop/ daily driver. sold 1985 c10 long bed 5.3/700r/2'' drop/17" wheels/ daily driver. sold 1970 c10 long bed-new project! getting ready for the 6.0 |
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#11 |
Registered User
Join Date: Nov 2008
Location: Rowlett, TX
Posts: 863
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Re: K30 Front Leaf Spring Help
Thanks for the replies guys......very helpful.
GM72, thanks for the picture and when u get a chance i would like to see the others too! Posted via Mobile Device |
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#12 |
Next!
Join Date: Jan 2003
Location: Eastern Pa.
Posts: 2,479
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Re: K30 Front Leaf Spring Help
These Both are factory 3 leaf setups, first is a 83 K30 dually pickup, second is an 86 K30 dually C&C (my dump truck)
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86 K30 CUCV M1028A1 86 K30 CUCV M1028a2 dually 86 K30 C&C 6.2 4:56s, 4M, 11,000 gvw, ex fire truck, now lowboy dump More square bodies and CUCVs than I care to admit to 2020 Silverado K3500HD Work truck |
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#13 |
Registered User
Join Date: May 2008
Location: Alta Loma, Ca.
Posts: 930
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Re: K30 Front Leaf Spring Help
Yep 3 leafs are stock, any more than that are added leafs by previous owners. You can usually tell the difference especially with an add a leaf since they don't usually follow the contour of the stock springs.
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#14 |
Senior Member
![]() Join Date: Jun 2010
Location: Illinois
Posts: 2,957
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Re: K30 Front Leaf Spring Help
If you look in my photo above why does only one leaf wrap around the bushing and it has 4 leafs. The other photos of the three leaf has two leafs that wrap around. What is the difference there. Since mine has four then that means that it is rated for more weight?
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Roy 85 Short Bed Silverado- Work in progress. http://67-72chevytrucks.com/vboard/s...d.php?t=564818 1987 R10 shortie |
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#15 |
Registered User
Join Date: Aug 2009
Location: S.C.
Posts: 1,593
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Re: K30 Front Leaf Spring Help
rs74 , Your spring packs "may" have been fixed. My K-20 did come with 3 leaves and 2 wrapped.
What's the rating on the front end? Does the build sheet show HD suspension? http://www.truckspring.com/suspensio...1985&model=K30 They show different leaves for the front, depending on weight rating. Just like rear springs, how many are in the pack? My K-20 did have the HD package, more than likely due to the dealer installed snowplow.
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'86 C-30 dually, 454/tbh400 '73 K-20 350/350/205 (sold ![]() I'm kinda like duct tape- no real purpose, but handy to have around. |
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#16 |
Senior Member
![]() Join Date: Jun 2010
Location: Illinois
Posts: 2,957
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Re: K30 Front Leaf Spring Help
Not sure what it is rated at. When I bought the truck it had the glove box mixing so no SPID sticker. I haven't seen anywhere else where the rating would be stamped.
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Roy 85 Short Bed Silverado- Work in progress. http://67-72chevytrucks.com/vboard/s...d.php?t=564818 1987 R10 shortie |
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