Road Runner Nest

Not sure if I'm posting this thread in the right place, but here it goes.

I have a decently built '72 Roadrunner, and am looking to put some Mopar Super Stock springs in the back. I have three choices though. 3,400 lb., 3,600 lb., and 3,800 lb. Does anyone have a guess on what the factory curb weight on these are? Currently with a 440, 727, and the obviously-lighter 8 3/4 rear.

Any help would be awesome. Thanks!

can't answer your question, but here's a bump and a welcome to the nest!

You did say best guess, should come in at closer to 3800lbs with the 440 in a stock configuration from the info I have.

definitely go with the heavier weight springs...you're probably close to 3800 and maybe even a little over

Thanks for the welcome and the info, guys! I Google'd how much it weighed yesterday and couldn't find anything. It was originally a 400 car (not sure if that has anything to do with anything). I just needed a guesstimate as to what it weighed. The engine's been reworked, still cast iron block and heads, but aluminum intake, water pump and housing, and radiator. That's certainly not 200 pounds worth.

Just thinking out loud. I'll probably just go with the 3,800 lb. springs.

Thanks again!

Your car, depending on options and undercoating, is probably right around 4000. However, a low optioned small block car with no undercoating and removal of spare tire, carpet and a/c heat could come in around 3350.
If you have a truck stop or co-op nearby you could have it weighed, let us know.