Early Classic did a comparison on stopping distance with stock vs. their disc setup and suspension components on a 60-66 C10. To be fair, I'm sure the original stuff was completely worn out, and it is an article to help sell their suspension components, but they came up with a 30' difference in stopping distance with some springs and tires:
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This wheel and tire package took the 60-0 braking distance down from 266ft. to 237ft. and the slalom speed from 32.4mph up to 36.2mph.
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They did the upgrades in stages, that included some springs and modern fatter radial tires.
They then did the disc brake upgrade and it dropped the stopping distance to 172':
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With the new Early Classic Enterprises front disc brake conversion installed, the braking distance dropped an additional 65ft., netting an impressive 172ft. The remainder of the suspension upgrade yielded another significant gain through our 420ft. slalom course. This speed was increased another 5mph to 41.2mph. A notable improvement in the handling characteristics of this truck is evident in these before and after (headlights on) photos.
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http://www.earlyclassic.com/Tech.asp...7s+Makeover+II
For comparison, let's say a C10 with discs can stop in 175 ft. A 2016 Silverado can stop in 137', and F-150 in 140, a Ram in 147' and a Tundra in 153' and these are 5,500 lb beasts.
http://news.pickuptrucks.com/2016/02...g-braking.html
The average family car can stop in 130-140' and a modern sports car in under 120'.
#'s from 2011:
http://www.consumerreports.org/cro/m...ance/index.htm
Just wanted to show the vast difference in braking between modern cars and our old trucks. At highway speeds you need to damn near be 100' back behind a modern car with drums. Where I live... good luck leaving more than 20-30'
