steel1212 said:Whats the diffrence between 620s and 720s? I thought the 720s where for the bigger cars but I see some of the 67s have 620s and some 66s have 720s
grego37 said:540 =much firmer than stock, perfect for most small block ford mustangs who want to firm up their ride.
620 = stiffer, for the driver who will sacrafice comfort for better handeling, street car / weekend warrior (me)
720 = super stiff, too stiff for me. for hardcore apps. or for the person who wears a mouthpeice while driving so he doesnt shatter his teeth, haha. I cant imagine driving with 720's everyday on the street.
I think it breaks down to personal preferance.
HistoricMustang said:Mainly ride quality, what you do with the old girl and how many times a year you want to see the dentist.
I have run springs with a rate as high as 1200 pounds at some tracks.
HistoricMustang
www.historicmustang.com
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