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Old 09-21-2020, 02:08 PM   #1
4406mopar
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Default 1971 GTX SS/HA Anybody know this car

This car in SS/HA 1973 What engine and carbs? 4bbl or 6bbl? Seems to low of a class for a hemi. 1751 Joe Umbra on the window. Tell us what you know. Thanks in advance!
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Old 10-11-2020, 08:43 PM   #2
DeuceCoupe
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Default Re: 1971 GTX SS/HA Anybody know this car

The NHRA file only shows a 71 Road Runner, no GTX listed.
But, for 1973, SS/HA=9.50 lb//hp


The Road Runner 440-6v/385hp meets this class with W/P=9.63
So that's my guess


The Hemi was always factored way above its 425hp rating (ROTFLMAO) so depending on factoring would likely be in the SS/EA=8.00 class.


Still lots of power in 1971 but everybody's cars were heavy except the Duster.
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Old 09-22-2022, 11:25 AM   #3
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Default Re: 1971 GTX SS/HA Anybody know this car

Quote:
Originally Posted by 4406mopar View Post
This car in SS/HA 1973 What engine and carbs? 4bbl or 6bbl? Seems to low of a class for a hemi. 1751 Joe Umbra on the window. Tell us what you know. Thanks in advance!
Photos taken by yours truly at the Mopar Atlantic Nationals at Raceway Park, Englishtown, NJ June 1996.


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