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Old 04-30-2018, 01:39 PM   #1
JeffMo1
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rear coil springs

I'm wanting to go a little lower on my 70 C10 trucks rear and I'm wondering about my current springs and if there's a way to tell wether they are aftermarket drop springs, or springs that have been cut or heated to accomplish the current drop.

I've attached a pic of the drivers side spring.

Let me know what your thoughts are.
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Old 04-30-2018, 02:02 PM   #2
sick472
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Re: rear coil springs

Those sure look like they have been heated and dropped. Not that I am an expert or anywhere close. I have not seen any coils springs that were OLD and well used that looked all squashed down like yours. My bet is they have been torched.

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Old 04-30-2018, 02:06 PM   #3
demian5
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Re: rear coil springs

I'd get new 3" drop springs and some 2" blocks.
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Old 04-30-2018, 02:09 PM   #4
hewittca
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Re: rear coil springs

When I bought my '68 it had heated original springs in it and they looked exactly like that. I pulled them out and replaced them with some 5" CPP springs. The additional drop after the CPP springs was 2", so my heated springs amounted to about a 3" drop.

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Old 04-30-2018, 02:10 PM   #5
jessemthompson
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Re: rear coil springs

I agree with sick472chevy. Those have been heated. How much is your front end dropped? That’s how I would calculate what rear springs to buy. So if your dropped 4” up front, drop 6” I. The rear. You can do it with springs alone or springs and blocks. I went springs and blocks so the shock angle wouldn’t be as severe. Also make sure you do a shock relocation kit. That will also help with the correct shock angle. If your shocks are angled too much, they will not do their job.
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