What Goatrider said.
Also consider that the Hotchkis springs are rated at 600 lbs/inch. If your engine weighed 100 lbs more than a smallblock (which there is no way that it does), your ride height would only be lower by 1/6".
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'72 Formula 400
12.77 @ 108 / 234/244 cam / Q-jet / 3840# / 3.23s / street tires (not DRs)
'73 Firebird 400/4-speed