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#1 |
Registered User
Join Date: Feb 2016
Location: indiana
Posts: 48
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flip kits
Reading up on axle flip kits for a '72 leaf spring rear. Some say to c-notch n some do not. Does anyone who installed them know What the distance is between the axle housing and spring with a kit installed? And did you c-notch it or not?
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#2 |
1972 C/20
Join Date: May 2005
Location: Santa Rosa, Ca
Posts: 273
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Re: flip kits
I c-notched mine. not much travel otherwise.
Will try and find some pics tomorrow. |
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#3 |
Senior Member
![]() Join Date: Mar 2003
Location: Colfax-California
Posts: 8,553
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Re: flip kits
If you go with a sprung under set-up, you will lower the truck about 5'' depending on the thickness of the leaf pack. You will need to notch the frame
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#4 |
Registered User
Join Date: Feb 2016
Location: indiana
Posts: 48
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Re: flip kits
wondering if I put in a lowering block, how thick of one I can use. I understand my c-notch can be big or small for clearance. but I was hoping for a 4 inch c notch,so not to cut the bed, and to use a 3 or 4 inch lowering block for a total of 8-9 inches of static drop. should leave me with 3 1/2-4 inches of travel. not sure its enough travel, if it wasn't I can always swap out a smaller block. that's why I was looking for the axle to spring distance on a flip kit bracket. looks like they may be 2 inches in addition to the 5 of the axle for a 7 ish total.
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#5 |
Registered User
Join Date: Dec 2012
Location: Fort Thomas, KY
Posts: 290
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Re: flip kits
I put a flip kit on my truck when I was building it, and I did not c notch the frame.
It originally came with the HD spring package, which had 5 standard springs, and then 4 more on top. I removed the 4 extra springs and left the standard ones. With the flip kit in, I had the standard bump stops on the axle and they nearly touched the frame while stationary. I had to cut around 2" off of them to get it to ride nicely. Kind of hard to see from this photo. I haven't had anything in the back yet, so I don't know what it is going to be like with some weight on it. I'm leery about cutting the frame and putting a c notch in. As a mechanical engineer, the analysis that I have seen state that there is no way to get the structural rigidity back unless you do the step notch. I wanted to keep the integrity of the frame so that I could still haul or tow. In the end, it's totally your call.
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1972 GMC 1500 Super Custom, 383 Stoker, TH350 Build Thread http://67-72chevytrucks.com/vboard/s...d.php?t=592157 Engine Thread http://67-72chevytrucks.com/vboard/s...d.php?t=592233 |
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#6 |
Registered User
Join Date: Jun 2007
Location: Everest Ks
Posts: 749
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Re: flip kits
Axle flip and c-notch in my 72. I have used it to move twice and still haul stuff in it occasionally, if you have it loaded down good it will bottom out sometimes. As for the c-notch I used a bolt in notch. The bolt in notch is actually made of thicker gauge steel than the truck frame is. Make sure you use good quality grade 8 bolts when you install it. I feel the section of the frame with the notch is stronger than original, but that's just me. Joseph
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1970 Chevelle Nomad station wagon 1966 C-10 lwb,250-six,granny 4speed ![]() ![]() 1966 C-10 lwb,factory A/C,Custom Cab ![]() 1954 Delray 2-door sedan [rat rod project]
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#7 |
Registered User
Join Date: Dec 1999
Location: Austin, TX, USA
Posts: 7,721
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Re: flip kits
DJM flip on my HD spring equipped '69. Lowered it just over 7". I removed the bumpstop pads from the axle and put the DJM bumpers on the frame rail. About 2 1/2" clearance. It will hit if I hit sharp impacts at speed, but for the most part it does not hit hard at least.
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44 Willys MB 52 M38A1 64 Corvette Coupe 68 Camaro 'vert LT1 & TH700 69 Z/28 355 12.6's @110 69 Chevy Short Step 4 1/2"/7" drop 72 Jimmy 4WD 4spd 4" & 35's 02 GMC 2500HD 4x4 Duramax |
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#8 |
Registered User
Join Date: Sep 2016
Location: Hooper,ut
Posts: 12
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Re: flip kits
Hey Sanford66 or cadillacart could you post a pic of you c notch with leaf springs I'm in the process of doing my flip kit on my 71 gmc c20 long bed. It looks like the frame is ganna sit on the axle.
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