340 or 408

Why not wait to see whats in your 340 block first? Maybe someone stuck a forged crank in a later block, and maybe had the rotating assembly balanced already and put good pistons in, you could already be sitting on some good stuff. Kinda just depends on what you got and what you want. No doubt the strokers run well but it aint that hard to put a streetable 340 in the 12s, how fast you wanna go?

Not bad advice right there. I planned to stroke (416) my 72 340 when I first bought the Duster last year. But upon opening her up, I was surprised/happy to find it already had a forged crank, was balanced and running 10.2 KB pistons. Have yet to get to the strip but it runs strong w zero traction through 1st and most of 2nd. My daughters & I plan on adding a 3.90-4.11 gear set, subframe connectors and slicks. If we break into the low 13's-Hi 12's with this combo we'll be very happy.

That said, our long term plans are to stroke the 340 to 416, aluminum heads etc....

Good luck with whatever course you take, and I look forward to following your progress.

Pat