Question on how much to cut springs - Team Camaro Tech
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post #1 of 14 (permalink) Old May 23rd, 11, 06:42 AM Thread Starter
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Question on how much to cut springs

My 68 vert is about finished being restored. I used Hotchkis 2 inch drop 3 leaf springs and my restorer says I should cut my coil springs to make it look right. Level it out I guess. He would like me to put 255R60 on 15x8 on the back and 235R60 on 15x7 or 15x8 on the front. I have a new set of 235R60 14s all around on it now. I'm still shopping for 15 inch Rally wheels. So my thought is if the springs need to be cut now, leave the front 1 inch higher than level with the 235R60 14s all around for now. Then when I get 235R60 and 255R60 15s (or even put 255R60 14 on the back) it will level out.

I need to get an alignment right away after the springs are cut of course so does this plan make sense keeping that in mind?
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post #2 of 14 (permalink) Old May 23rd, 11, 06:50 AM
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Re: Question on how much to cut springs

Better option would be to buy a set of Hotchkis front springs if you can. As you cut the springs the rate will also change. I would cut 1/2 coil at a time then when you get the right stance then have the alignment done.

I'm running Hotchkis front and rear springs, 15x7 TT-D's with 225/60 up front and 245/60 in the back.


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(sold June 15,2014) 1968 RS convertible that is not quite stock

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post #3 of 14 (permalink) Old May 23rd, 11, 09:14 AM
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Re: Question on how much to cut springs

I would use 225-60's on the front like Russ has. 235's have given problems to some people, and if you are lowering the car it will make things tighter.

I'm going with 225's on the front and 255's-275's on the back.
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post #4 of 14 (permalink) Old May 23rd, 11, 09:22 AM
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Wink Re: Question on how much to cut springs

Cutting one 'full' coil will normally get you @1.5~2" of drop to the front.

To get the @3/4~1" drop I would suggest cutting a 1/2 coil and installing to check ride height.
You can always remove and cut additional amount as needed ...

This will also increase the spring rate slightly, resulting in a slightly stiffer ride.

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post #5 of 14 (permalink) Old May 23rd, 11, 09:28 AM Thread Starter
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Re: Question on how much to cut springs

Let me ask this: what is the goal? Do I measure from ground to top of wheel well and try to get front and back the same? I guess once it's all done I'll know where I'm at but I need to know how to measure it.
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post #6 of 14 (permalink) Old May 23rd, 11, 09:25 PM
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Re: Question on how much to cut springs

Greetings from Arizona
My 69 droptop sits low...22 1/4 top of front wheel well and 23 3/4 to top of rear wheel well. I run 15 inch rally wheels. 15x6 Custom made for front with 205/60hr15s and 15x7's on rear with 215/65hr15's (same height as 235/60r15's) I'm running CPP drop spindles with big block spring. Pictures on photobucket Jay


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post #7 of 14 (permalink) Old May 24th, 11, 07:50 AM
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Re: Question on how much to cut springs

The goal is up to you and honestly your personal preference as there is no right or wrong answer. Some folks like the OE look which often had the front slightly higher than the rear. Some like the car level front to back. Many (myself included) like the front slightly lower than the rear aka: raked. This is however not with the rear jacked up aka: nosebleed or the cheap seats.

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post #8 of 14 (permalink) Old May 24th, 11, 07:59 AM Thread Starter
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Re: Question on how much to cut springs

I guess it was what the OE look would be that I was asking about. So it was slightly raised in the front?

I remember in the 60s we put spreaders in the coil springs of our 55 Chevys to raise the front end. I'm not sure I'd like that look anymore though
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post #9 of 14 (permalink) Old May 24th, 11, 09:45 AM
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Wink Re: Question on how much to cut springs

The "OEM" 'look' was actually quite level - when new ...
The rear springs tended to sag a little and folks also carried more $-tuff in their trunks than GM initially imagined.
All this resulted in many cars exhibiting a slightly 'nose-high' stance.

The installation of new front springs during a restoration, while retaining the original rear springs will only serve to exaggerate this 'nose-high' look

Like 'rj' said - it's up to you to decide how you want your car to 'look' or it's stance.
I agree with him on the slightly "raked" (nose-lower/tail stock or slightly higher) stance as being my preferred 'look' on a Camaro

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post #10 of 14 (permalink) Old May 24th, 11, 01:25 PM Thread Starter
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Re: Question on how much to cut springs

Just spotted a set locally. They are 235R60 15 and 275R60 15. Think those are too big for a 68?
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post #11 of 14 (permalink) Old May 25th, 11, 04:26 AM Thread Starter
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Re: Question on how much to cut springs

What do you think these would like on my 68 vert?
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post #12 of 14 (permalink) Old May 25th, 11, 07:17 AM
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Re: Question on how much to cut springs

275's are probably too wide for the rear but it would really depend on the backspacing of the wheels. The 15x7 TT-D's I'm running are 3.76" backspace.

Russ (RJ)
The Garlic Capital, Gilroy,CA

(sold June 15,2014) 1968 RS convertible that is not quite stock

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post #13 of 14 (permalink) Old May 26th, 11, 07:17 AM Thread Starter
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Re: Question on how much to cut springs

Obviously I don't know much about all this. I'm pasing on those those 275R60s. Now I've spotted some 15x8 wheels locally that I will put 255R60s on for the back.

Let me ask this: what is the smallest size R60 I could put on 15x8 wheels? I could pick up 4 15x8 but I thought I'd go with 225R60 on the front. Would I need to go to a 15x7 for that size or smaller?
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post #14 of 14 (permalink) Old May 26th, 11, 07:50 AM
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Re: Question on how much to cut springs

Quote:
Originally Posted by Winch View Post
Obviously I don't know much about all this. I'm pasing on those those 275R60s. Now I've spotted some 15x8 wheels locally that I will put 255R60s on for the back.

Let me ask this: what is the smallest size R60 I could put on 15x8 wheels? I could pick up 4 15x8 but I thought I'd go with 225R60 on the front. Would I need to go to a 15x7 for that size or smaller?
You can put a 225 wide tire on an 8" wide rim.
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