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Old 07-27-2015, 09:33 PM   #1
62 bigwindow
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78 Suburban drop?????

Curious what you guys think about how far I need to drop my 78 suburban
Planned on 18s on front and 20s in the rear?
is 2.5 in spindles and 2 in springs in front and a flip kit in the rear enough?
any pictures/?
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Old 07-27-2015, 11:22 PM   #2
UKNOWME
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Re: 78 Suburban drop?????

That's probably a great drop. Or you should just sell me the suburban. Haha
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Old 07-27-2015, 11:45 PM   #3
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Re: 78 Suburban drop?????

cool burb. Drop sounds about right but 20"s all around look better on a square. Just my $.02
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Old 07-28-2015, 02:16 PM   #4
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Re: 78 Suburban drop?????

My truck has 3 in spindles and drop springs up front. In back, you probably won't be able to flip the axle and still have any clearance to the frame. In my case, I needed to replace the rear leafs anyway because some of them were cracked. I upgraded to a higher load bigger rear spring pack so that when I did flip the axle there was some clearance once I removed the factory bump stops. It still ended up being a little too low in the back so I used Rancho lift shackles to raise it back up a little. Also if you do flip the axles I would highly recommend welding on new spring perches and not using relocation brackets, a much stronger setup.

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Old 07-28-2015, 02:34 PM   #5
ultrahd4me
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Re: 78 Suburban drop?????

Here is a 74 a buddy of mine did with a 5/6 drop, 20x8 & 20x10 Torque Thrust, 245/35/20 and 275/35/20 tires.
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Old 07-30-2015, 12:26 PM   #6
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Re: 78 Suburban drop?????

Quote:
Originally Posted by Ol' Drippy View Post
My truck has 3 in spindles and drop springs up front. In back, you probably won't be able to flip the axle and still have any clearance to the frame. In my case, I needed to replace the rear leafs anyway because some of them were cracked. I upgraded to a higher load bigger rear spring pack so that when I did flip the axle there was some clearance once I removed the factory bump stops. It still ended up being a little too low in the back so I used Rancho lift shackles to raise it back up a little. Also if you do flip the axles I would highly recommend welding on new spring perches and not using relocation brackets, a much stronger setup.

What size are your tires? And whose 3" spindles and springs did you use? Thanks
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Old 07-31-2015, 02:01 PM   #7
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Re: 78 Suburban drop?????

My tires are 29" tall and all of my suspension stuff is DJM, I used their 3" spindles and I think 2" drop springs. My truck is a big block so it is probably a little lower in front than a small block truck would be. On big dips the front tires rub the inner fenders sometimes but other then that I don't have any issues.
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Old 08-03-2015, 10:41 AM   #8
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Re: 78 Suburban drop?????

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Originally Posted by Ol' Drippy View Post
My tires are 29" tall and all of my suspension stuff is DJM, I used their 3" spindles and I think 2" drop springs. My truck is a big block so it is probably a little lower in front than a small block truck would be. On big dips the front tires rub the inner fenders sometimes but other then that I don't have any issues.
Thanks for the info. Mine is a small block and I'll be running 225's up front, so that should eliminate the rubbing issue you mentioned.
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