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#1 |
Account Suspended
Join Date: Apr 2016
Location: Rancho Mirage, Ca.
Posts: 875
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Lowering Block apinions
I went looking for some 2" lowering blocks to lower my 68 C10 just a little bit from some Auto Parts stores and found that the blocks they had were "hollow", not solid. **QUESTION 1- Would the hollow ones stand up as good as the solid ones? While down in Orange County I stopped in at the Truck Shop in Orange and bought 2 front 1" dropped coil springs. **QUESTION 2- I have heard a little bit of controversy on CPP's dropped springs dropping much more then the new spring was bought at mine (1"). QUESTION 3- So 1" new might drop maybe 2" or more ? " I hope not "
Fire at will ever one and don't be shy. thanks in advance |
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#2 |
BlahBlahBlah
Join Date: Feb 2002
Location: Wa.
Posts: 19,881
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Re: Lowering Block apinions
I have two inch blocks on the panel and it causes things to hang below the scrub line just a touch. Before the truck is driven we will do something else.
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#3 |
Account Suspended
Join Date: Apr 2016
Location: Rancho Mirage, Ca.
Posts: 875
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Re: Lowering Block apinions
CG my truck has on it now stock 8" u-bolts no low/blocks yet, I bought two u- bolts that are 10" long and will be using stock wheels 15x6 wide, tires not sure yet but might need a taller profile tire to get the wheel more off the ground so it might work better that way or not. what do you think about that?
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#4 |
Account Suspended
Join Date: Apr 2016
Location: Rancho Mirage, Ca.
Posts: 875
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Re: Lowering Block apinions
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#5 |
BlahBlahBlah
Join Date: Feb 2002
Location: Wa.
Posts: 19,881
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Re: Lowering Block apinions
I have 15 inch wheels too. With four inch drop springs, the springs are heavier duty because they are for burb/panel. I wanted 6 inch drop but the only size springs they made for burb/panel were four inch drop at the time.
As far as quality of the CPP stuff I hear both ways so I cant give you an answer. If you care about scrub lines don't use two inch blocks. Just my opinion =) Mine will be off before the panel hits the road. Ive given this project to my son and I want him and my grand kids to be safe if there is a blowout.
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#6 | |
Account Suspended
Join Date: Apr 2016
Location: Rancho Mirage, Ca.
Posts: 875
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Re: Lowering Block apinions
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#7 |
Registered User
Join Date: Sep 2014
Location: Florida
Posts: 184
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Re: Lowering Block apinions
With 2" blocks and 15" wheels you run the risk of dragging the trailing arms on pavement if the rear tire blows out or goes flat. I've read that using bigger wheels eliminates the problem, so 2" blocks are only suggested for trucks with wheel diameters larger than 15".
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Nick 1972 Chevrolet C10 Stepside |
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#8 |
BOHICA
Join Date: Mar 2008
Location: Stewartville, MN
Posts: 440
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Re: Lowering Block apinions
The hollow blocks should be fine, if they are quality made. I made my own out of 2x2 stainless with 1/4 wall thickness. Overkill for sure, but I had a piece available for free. There is a thread on here somewhere about how to build them. FYI, both my rear tires went completely flat over the winter and there was about 1/2" of clearance before anything touched the floor. May be a different story if you are at speed. Down the road I will be replacing them with drop springs, but for now it gave me the right stance cheap.
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Trying to save someone from their own stupidity is like teaching a pig to dance. It is a waste of your time, and it annoys the pig! |
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#9 |
BlahBlahBlah
Join Date: Feb 2002
Location: Wa.
Posts: 19,881
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Re: Lowering Block apinions
With drop springs, lowering blocks, and shock relocation to make sure everything works correctly you are going to have potential problems with a flat tire on 15 inch rims. It is super close so probably even moving up to a 16 inch rim would eliminate the problem. On a car just losing the air while sitting over time its not going to be noticeable.
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#10 | |
Account Suspended
Join Date: Apr 2016
Location: Rancho Mirage, Ca.
Posts: 875
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Re: Lowering Block apinions
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#11 |
Registered User
Join Date: Nov 2014
Location: Redmond, OR
Posts: 94
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Re: Lowering Block apinions
Here is a kit similar to what I got, has solid blocks. Wont make much difference if they're hollow or solid. Like said before, you can make your own blocks. It's the U bolts that you need to have made up if you know a local machine shop.
http://www.ebay.com/itm/1960-72-Chev...JTAquG&vxp=mtr |
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#12 |
Registered User
Join Date: Oct 2010
Location: Ocean Springs, MS
Posts: 1,746
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Re: Lowering Block apinions
After reading this, I was concerned because I have 2 inch drop blocks with 15 inch wheels on my truck. So I put an old 15 inch wheel with no tire on the rear of the truck and lowered it to the floor. The trailing arm did not hit. The U-bolts are the lowest point on the arm, and there was at least 3/4 inch between the floor and the bolt. The axle was at quite an angle with a good tire on the other side, so unless you had two flat tires at the same time, I don't think it would be a problem.
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Gary 1971 Chevrolet C/10 1951 GMC 100 1977 GMC C15 1955 Chevrolet 3100 |
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#13 |
BlahBlahBlah
Join Date: Feb 2002
Location: Wa.
Posts: 19,881
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Re: Lowering Block apinions
Maybe if you just use blocks it would be ok. But if you use springs, blocks, and the correct shock relocation kit its not fine.
Thanks for checking yours out.
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#14 |
Registered User
Join Date: Oct 2010
Location: Ocean Springs, MS
Posts: 1,746
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Re: Lowering Block apinions
Oh yes, forgot to mention, I have stock springs and shocks. The springs are pretty weak, though.
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Gary 1971 Chevrolet C/10 1951 GMC 100 1977 GMC C15 1955 Chevrolet 3100 |
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#15 | |
Account Suspended
Join Date: Apr 2016
Location: Rancho Mirage, Ca.
Posts: 875
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Re: Lowering Block apinions
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Thanks so far for all who has put there .02 cents in |
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#16 | |
Account Suspended
Join Date: Apr 2016
Location: Rancho Mirage, Ca.
Posts: 875
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Re: Lowering Block apinions
Quote:
With all that has gave there .02 cents here, I get it |
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#17 |
Registered User
![]() Join Date: Feb 2016
Location: Weatherford Texas
Posts: 306
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Re: Lowering Block apinions
- Drop springs have nothing to do with scrub line.
- Measuring scrub line clearance with two bare wheels is pretty extreme. Even the flattest of tires still add some height into the equation. When have you seen a tire so so profoundly flat that the wheel rubs the ground ? |
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#18 |
Special Order
![]() ![]() Join Date: Nov 2004
Location: Mt Airy, MD
Posts: 85,858
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Re: Lowering Block apinions
I have no opinion on lowering blocks because I have never used them.
I have never used them because I don't like them. I feel there are better ways. I guess that is an opinion.
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"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 ~ |
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#19 |
Senior Member
![]() Join Date: Jun 2002
Location: Murray, Kentucky
Posts: 3,483
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Re: Lowering Block apinions
I've had 2" drop blocks on my 2wd blazer for 13 years, never had a problem. Not saying the potential doesn't exist, but then there's only so much I can worry about.
Good luck, Rg
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Roger '68 Short step - https://67-72chevytrucks.com/vboard/...d.php?t=849675 '69 ('70?) 2wd Blazer '70 GMC Jimmy 2wd '73 Firebird - https://67-72chevytrucks.com/vboard/...d.php?t=853203 |
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#20 |
BlahBlahBlah
Join Date: Feb 2002
Location: Wa.
Posts: 19,881
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Re: Lowering Block apinions
Id have to go look at my chassis, but if I remember correctly the blocks with the shock relocators are what screws it up. Ill be out at the farm today getting some parts for John H. Ill see if I can snag a picture.
BTW, I'm not trying to argue one way or another, just stating where my rig stands (sits?) with this set up.
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#21 | |
Account Suspended
Join Date: Apr 2016
Location: Rancho Mirage, Ca.
Posts: 875
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Re: Lowering Block apinions
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#22 |
Account Suspended
Join Date: Apr 2016
Location: Rancho Mirage, Ca.
Posts: 875
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Re: Lowering Block apinions
Not going to Quote any body here. But here is what my 68 C10 is with stock 15" rims/wheels only.
All 4 pics are showing clearances with a 2" block of wood which would represent the 2" lowering block. 1st pic is the clearance 3/8" from ground to the coil spring retainer bolt. good 2nd & 4th pics show NO clearance (-3/16th") for the front U-bolt. bad 4th pic shows the clearance for the rear U-bolt almost 3/8". good So with all this said & with the pics showing the problems with 2" lowering blocks I have to agree that it is a BAD idea using 2" lowering blocks only. I hope my numbering of the pics are right , if not you all can figure it out, I have faith in you all. |
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#23 |
Registered User
Join Date: Jun 2012
Location: Clearwater Beach Florida
Posts: 872
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Re: Lowering Block apinions
Just wondering anyone out there have a blow out with the 2 in blocks and what we're the results?
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#24 |
Senior Member
![]() Join Date: Jun 2002
Location: Murray, Kentucky
Posts: 3,483
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Re: Lowering Block apinions
Well, I now have 17" wheels with tires that have 4" of side wall. The lowest point of the suspension is 4.875" (the bolt head for the spring cup, and it is the lowest due to the 4" drop springs, on a stock truck the ubolt ends would be lower). So the blazer is safe from this now. My jimmy has 15" wheels with 5.5" of side wall. If I had a flat on it (and if I had 2" blocks on it) there would be some suspension drag.
This being said, I have driven for 38 years and had one blow out on tires I knew were borderline (actually, worse than borderline, but I was a poor kid). My toys get maintained much better than any of my old cars ever did. I think Gary (Katrina10) is right if you had a fully inflated tire on the otherside then the flat side MAY not hit (I think your pictures with the blocks simulate both tires being flat instead of one...) You have to do what makes you feel safe. Good luck, Rg
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Roger '68 Short step - https://67-72chevytrucks.com/vboard/...d.php?t=849675 '69 ('70?) 2wd Blazer '70 GMC Jimmy 2wd '73 Firebird - https://67-72chevytrucks.com/vboard/...d.php?t=853203 Last edited by raggedjim; 07-02-2016 at 09:11 PM. |
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#25 |
Account Suspended
Join Date: Apr 2016
Location: Rancho Mirage, Ca.
Posts: 875
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Re: Lowering Block apinions
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