Anyone running a 904 behind a 340?

Both your 76 Charger and the 75 Cordoba had the 999 transmissions. You must be doing something wrong or maybe not had the kickdown adjusted correctly. The 999's are pretty tough. Just saying.
Yeah but how many go to that extent with a Nasty 904? I've blown up more 904s and replaced them with 727s than you can shake a stick at.
This is normal driving, never had a race or street/strip car. I was happy (and quite surprised) to discover that my newest (to me) D150 came with a/6 and a 727!!! My 1st couple of vehicles were a 76charger SE and a 75 Cordoba back in the 80s both 360/904 2 barrel carbs and both wound up with 727s in them. And those were just the start.

I do have an A500 here (yeah I know 904 based) that I may tempt fate with and "build up" if I can find a adapter to put a SB trans behind the/6.