LD340 vs LD4B Differences?

Back in the day I owned four LD340's, one was stock, one just had the divider wall cut down, one was modified to accept a Thermoquad & one was hogged out by a local racer.. It had a Chrysler pt# so it must have been "stock".....

They all worked pretty well, I actually ran the one with the Thermoquad mod more that all the others combined... I had a Tquad that just worked... It spanked a few stout big blocks & pulled decent fuel mileage..

I also had one LD4B... Probably should have tried that one but I was more into going fast than the best low RPM torque..

I swapped more cams, carbs & intakes on that car than all the other cars I owned...

Funny thing, Edelbrock flipped the upper & lower planes between the two manifolds... Always wondered what they were thinking...