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Old 08-31-2013, 02:48 PM
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48 pontiac front coil springs

Hi, need help deciding on cutting coils springs or buying lowering springs.
48 pontiac streamliner, rebuilding king pinns and shocks on original suspension.
pulled the old straight 8 out and installing a S/B engine, estimate that it is about 350 # lighter and will set the front end up . maybe too stiff also.

any sugestions ? ?

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Old 09-03-2013, 04:11 AM
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Get the 350 installed so you know what height difference you will be dealing with. I would avoid cutting the springs at all costs, especially if you are going more then an inch or so. Cutting the springs drastically changes the spring rate and will create a harsh riding suspension.
Your best option here is to talk to Eaton Spring EATON Detroit Spring - The leading manufacturer of leaf and coil springs for the street rod and restoration industries and try to find a spring that will match your new height and spring rate requirements. You may want to have the car weighed so you know the front/rear weight bias and what the new front weight is.
Of course, there may be some suspension companies that offer new springs for this combination. The chassis for the GM cars were essentially the same so doing a search for a '48 Chevy may get you more info.
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