72-73 Super Stock 340
 

My first post here.


I'm interested in race weight and MPH of a strong, low compression 340 Mopar.
You can add 60' and other incrementals as well but, really looking for horsepower
based on weight and MPH from a competitive engine.
Thank you for the help.

Re: 72-73 Super Stock 340
 

You can look in the NHRA Stock Car Classification Guide to find the weight based on the year/model and rated HP of the car you have in mind. Beyond that there are too many variables to predict. Maybe find the car as a stocker based on the guide and look up the class in the rule book. Then compare it to the national records for that class?

Dale

Re: 72-73 Super Stock 340
 

Check Nitro Joe's Stats, top of the page is a link. He keeps track of all the runs made at NHRA events. Not to many of those cars currently racing.

Re: 72-73 Super Stock 340
 

SS/KA = 123 to 125

SS/JA = 125 to 127

These are for a VERY good 340 Low Comp.

Our's are a couple slower unfortunately.

Re: 72-73 Super Stock 340
 

Thanks for the replies.


After registering to Mr. Southerland"s website, I found more helpful direction.
I Googled current S/S records and see SS/KA MPH is at 128. Figuring 3266 lbs.
for a 72 Duster at minimum K weight comes out to 530 HP to match that MPH.


Thanks again for the help.

Re: 72-73 Super Stock 340
 

s/st 340, would that 530 hp be flywheel or rear wheel hp?

Re: 72-73 Super Stock 340
 

I've always used it as flywheel HP.


(MPH x .00426)³ x Weight = HP

Re: 72-73 Super Stock 340
 

The LC 340 loves a manual trans and a 72 Demon, 73 Dart Sport have the advantage of a hood scoop.