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When did they begin using disc brakes on...


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#1 Bonekrosha

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Posted 26 February 2013 - 11:24 PM

What year did they begin using disc brakes on NASCAR Plymouths/Dodges ?



#2 MAGNUM4342

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Posted 27 February 2013 - 02:30 AM

1974



#3 Bonekrosha

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Posted 27 February 2013 - 05:06 PM

Many thanks...



#4 bbowser

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Posted 28 February 2013 - 01:25 PM

Wow, I'm surprised it was that late.  Can you imagine Martinsville or North Wilkes in a 73 Charger with drum brakes?  Talk about nerves :o



#5 MAGNUM4342

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Posted 28 February 2013 - 01:30 PM

Brake wear-out was a major problem in those days and probably accountable for at least a third of on track and pit road accidents.



#6 1972coronet

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Posted 02 March 2013 - 02:43 AM

Those early disc brake calipres caused a lot of drag ( by nature of their function ) , which is why 99% of race cars ( Stock Car , 1/4 mile , etc. ) had drums until the early-mid seventies .



#7 MAGNUM4342

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Posted 02 March 2013 - 04:34 AM

Very true John. Even the Petty team tended to shun them except on the smaller tracks. IIRC, they only used disks on the front end, and only onshorter tracks during most of the seventies. On restrictor plate races they continued using drums all the way round.