1971 GTX SS/HA Anybody know this car

4406mopar · 09-21-2020, 02:08 PM

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!

DeuceCoupe · 10-11-2020, 08:43 PM

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.

mopar68 · 09-22-2022, 11:25 AM

Quote:

Originally Posted by 4406mopar

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.

09-21-2020, 02:08 PM	#1
4406mopar Member Join Date: May 2009 Posts: 233 Likes: 168 Liked 120 Times in 53 Posts	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! Attached Thumbnails Last edited by 4406mopar; 09-24-2020 at 02:53 PM.

10-11-2020, 08:43 PM	#2
DeuceCoupe Member Join Date: Feb 2016 Posts: 274 Likes: 98 Liked 48 Times in 44 Posts	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.