determining my current rear spring height - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Custom 68 · 04-19-2013, 10:34 AM

Like the title says, I purchased drop springs a few years ago and believe them to be a 4 inch drop, that is what I remember. I have added 1.5 inches worth of blocks and now think I want to lower it one more inch. I would like to confirm what I have before I purchase the 5 inch drop ones.
I will also do a little looking thru my receipts but this has been a multi year evolving project and I have a stack of receipts a trained dog cant jump over...

I will measure my current ones bud didnt know if anybody has a quick reference on what the various heights are.
Thanks
David

**lolife99** · 04-22-2013, 10:08 PM

Different brands are different heights due to spring rates and wire diameter.

Sammy · 04-23-2013, 04:59 AM

Some place but not sure where is a ground to top of wheel arch factory specs. Maybe someone has that number you can use as reference keeping in mind factory size tires will give you something to go by. For some reason I'm thinking it was about 31/32"..

Custom 68 · 04-23-2013, 10:04 AM

Thanks guys, I am pretty sure at the time I didnt want to go too low so I went with 4 inch but since then I have added a spacer and moved the front trailing arm mount so who knows where it is now...
here is a picture I am thinking another inch in the back? Thoughts?

Custom 68 · 04-23-2013, 10:06 AM

I also have room to go a little lower in the front. Right now I am about an inch different on wheel opening measurement. I believe my rear is 29.5 or so but I know my tire is 28.5 so from the picture it looks like I am higher than that. I will remeasure.

67WrenchHead · 08-17-2013, 02:18 PM

Nice looking truck, I'm trying to decipher the same thing. Only I dont have any background on the truck, bought it this way. I suppose the easy way out would be airbags, not sure if I want to go that route though. I kinda like the stance of yours as it is...

kaycee · 08-18-2013, 02:43 PM

I would leave it the way it is that is a nice stance IMO

Custom 68 · 08-18-2013, 08:38 PM

Thanks guys I just couldn't leave it alone. I dropped it just a touch more I will post new pics.
Posted via Mobile Device

Custom 68 · 08-19-2013, 03:31 PM

Here it is now with a little tweeking done on the heights.

**oldman3** · 08-19-2013, 08:05 PM

I like how it looks, nice job...Jim

**66 C10 383** · 08-19-2013, 11:18 PM

It's amazing just when you think it looks good, how much better a "little tweaking" can do. Looks good!

Custom 68 · 08-20-2013, 09:02 AM

Thanks guys I appreciate that.

04-19-2013, 10:34 AM	#1
Custom 68 Registered User Join Date: Nov 2001 Location: Springfield, MO Posts: 2,939	determining my current rear spring height Like the title says, I purchased drop springs a few years ago and believe them to be a 4 inch drop, that is what I remember. I have added 1.5 inches worth of blocks and now think I want to lower it one more inch. I would like to confirm what I have before I purchase the 5 inch drop ones. I will also do a little looking thru my receipts but this has been a multi year evolving project and I have a stack of receipts a trained dog cant jump over... I will measure my current ones bud didnt know if anybody has a quick reference on what the various heights are. Thanks David __________________ Dave 1968 Custom Chevy with turbo charged 5.3 gen III 4l80e swap 1967-71 GMC 3/4 ton long step 4x4 (not sure what year exactly?) "A good friend will bail you out of jail...but a true friend will be sitting next to you saying "that was frekin awesome". "If it doesn't fit force it...If it breaks then it needed to be replaced anyway!"

04-22-2013, 10:08 PM	#2
lolife99 67-72 parts collector,… Join Date: Nov 2002 Location: Mid-MO Posts: 22,700	Re: determining my current rear spring height Different brands are different heights due to spring rates and wire diameter. __________________ Keith Convert to disc brakes. http://67-72chevytrucks.com/vboard/s...d.php?t=444823

04-23-2013, 04:59 AM	#3
Sammy Registered User Join Date: Apr 2000 Location: Bonne Terre, Mo Posts: 3,005	Re: determining my current rear spring height Some place but not sure where is a ground to top of wheel arch factory specs. Maybe someone has that number you can use as reference keeping in mind factory size tires will give you something to go by. For some reason I'm thinking it was about 31/32".. __________________ '69 Chevy Long Fleet & '71 GMC Short Step & Project "ODD BALL" "You can wash a pig, soak it in most expensive perfume. In the end it is still just a pig." ODD BALL build thread http://67-72chevytrucks.com/vboard/s...d.php?t=478629"

04-23-2013, 10:04 AM	#4
Custom 68 Registered User Join Date: Nov 2001 Location: Springfield, MO Posts: 2,939	Re: determining my current rear spring height Thanks guys, I am pretty sure at the time I didnt want to go too low so I went with 4 inch but since then I have added a spacer and moved the front trailing arm mount so who knows where it is now... here is a picture I am thinking another inch in the back? Thoughts? Attached Images __________________ Dave 1968 Custom Chevy with turbo charged 5.3 gen III 4l80e swap 1967-71 GMC 3/4 ton long step 4x4 (not sure what year exactly?) "A good friend will bail you out of jail...but a true friend will be sitting next to you saying "that was frekin awesome". "If it doesn't fit force it...If it breaks then it needed to be replaced anyway!"

04-23-2013, 10:06 AM	#5
Custom 68 Registered User Join Date: Nov 2001 Location: Springfield, MO Posts: 2,939	Re: determining my current rear spring height I also have room to go a little lower in the front. Right now I am about an inch different on wheel opening measurement. I believe my rear is 29.5 or so but I know my tire is 28.5 so from the picture it looks like I am higher than that. I will remeasure. __________________ Dave 1968 Custom Chevy with turbo charged 5.3 gen III 4l80e swap 1967-71 GMC 3/4 ton long step 4x4 (not sure what year exactly?) "A good friend will bail you out of jail...but a true friend will be sitting next to you saying "that was frekin awesome". "If it doesn't fit force it...If it breaks then it needed to be replaced anyway!"

08-17-2013, 02:18 PM	#6
67WrenchHead Registered User Join Date: Jun 2013 Location: California Posts: 7	Re: determining my current rear spring height Nice looking truck, I'm trying to decipher the same thing. Only I dont have any background on the truck, bought it this way. I suppose the easy way out would be airbags, not sure if I want to go that route though. I kinda like the stance of yours as it is...

08-18-2013, 02:43 PM	#7
kaycee Registered User Join Date: Jan 2000 Location: Wyoming USA Posts: 2,449	Re: determining my current rear spring height I would leave it the way it is that is a nice stance IMO __________________ 2001 Silverado K-1500 2005 FXDWG stage3 69 CHEVY Short/Step 327/4L60 373 posi 63 IMPALA 327

08-18-2013, 08:38 PM	#8
Custom 68 Registered User Join Date: Nov 2001 Location: Springfield, MO Posts: 2,939	Re: determining my current rear spring height Thanks guys I just couldn't leave it alone. I dropped it just a touch more I will post new pics. Posted via Mobile Device __________________ Dave 1968 Custom Chevy with turbo charged 5.3 gen III 4l80e swap 1967-71 GMC 3/4 ton long step 4x4 (not sure what year exactly?) "A good friend will bail you out of jail...but a true friend will be sitting next to you saying "that was frekin awesome". "If it doesn't fit force it...If it breaks then it needed to be replaced anyway!"

08-19-2013, 03:31 PM	#9
Custom 68 Registered User Join Date: Nov 2001 Location: Springfield, MO Posts: 2,939	Re: determining my current rear spring height Here it is now with a little tweeking done on the heights. Attached Images __________________ Dave 1968 Custom Chevy with turbo charged 5.3 gen III 4l80e swap 1967-71 GMC 3/4 ton long step 4x4 (not sure what year exactly?) "A good friend will bail you out of jail...but a true friend will be sitting next to you saying "that was frekin awesome". "If it doesn't fit force it...If it breaks then it needed to be replaced anyway!"

08-19-2013, 08:05 PM	#10
oldman3 Senior Member Join Date: Mar 2011 Location: West Plains, Missouri Posts: 7,559	Re: determining my current rear spring height I like how it looks, nice job...Jim __________________ my build thread: http://67-72chevytrucks.com/vboard/s...d.php?t=459839 Jimbo's long bed step build:http://67-72chevytrucks.com/vboard/s...t=464626<br />

08-19-2013, 11:18 PM	#11
66 C10 383 Senior Member Join Date: Aug 2012 Location: Somewhere In So. IL. Posts: 412	Re: determining my current rear spring height It's amazing just when you think it looks good, how much better a "little tweaking" can do. Looks good!

08-20-2013, 09:02 AM	#12
Custom 68 Registered User Join Date: Nov 2001 Location: Springfield, MO Posts: 2,939	Re: determining my current rear spring height Thanks guys I appreciate that. __________________ Dave 1968 Custom Chevy with turbo charged 5.3 gen III 4l80e swap 1967-71 GMC 3/4 ton long step 4x4 (not sure what year exactly?) "A good friend will bail you out of jail...but a true friend will be sitting next to you saying "that was frekin awesome". "If it doesn't fit force it...If it breaks then it needed to be replaced anyway!"



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