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Old 11-01-2018, 12:17 AM   #4
'63GENIII
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Join Date: Sep 2008
Location: San Carlos, Ca.
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Re: 64" spring swap ?

Quote:
Originally Posted by Miller's Metal View Post
I've looked through your thread a few times,nice work! I have the same blazer tank just waiting to go in with the springs.The springs that I have are the 3/4 ton 4x4 version. Looking at my front hanger if I move it forward on the lower frame rail rivets. Swapping the back hole for the front. It will move it forward 6.5'' and down 2". Is that about where yours ended up? Also for the rear I'll use a shackle flip compression style two plate design like you used,so I can adjust the height for the rear.How far down did your front shackle end up from the stock hanger? Did you gain any lift from the spring it self? Thanks,Gary
Hey Gary,

I'll try and get some pics off of my computer to show the relationship of the new front hanger vs. where the old one was. I should have taken measurements but was in more of a hurry and trying to make sure that the axle was straight consumed most of my attention..

I do remember clamping the hangers onto the frame and loosely setting everything down onto the axle to estimate what the sag would be several times to mock up the positioning of the hangers before drilling. It was a lot of eyeballing. Not very scientific.

As far as lift, I do not have 4-1/2" blocks anymore and the truck sits with about 3/4" rake. If I had to guess, total lift is around 5".
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'63 k15 long step
Vortec 7.4 - L29 Blackbear tune, Five 0 Motorsports injectors, Chris Straub Cam, NV4500, divorced 205
52" front and 63" rear spring swap
D44 / 14bff - disc axles
Milemarker 9K and 10.5K hydraulic winches

63" & B52 Spring Install http://67-72chevytrucks.com/vboard/s...ng+swap+thread


NV4500 Reverse Build Thread http://67-72chevytrucks.com/vboard/s...=reverse+build

L29 - 7.4 Vortec Build http://67-72chevytrucks.com/vboard/s...&highlight=L29
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