302 casting on a set of 318 heads

Speaking of a lockup A904. How is that in relation to an A500 OD? Is first gear as low as the A500? How much RPM drop do you typically get out of an A904 lockup. I had a FWD 3 speed auto in a Daytona ES 2.5 N/A that had a lockup. I remember once the computer went to closed loop when driving on the highway, it would drop down 200 RPM.

Bunch of M body fifth Aves in my local boneyard. I planned on grabbing a pair of 302 heads when temps cool down and the rattlesnakes go into hibernation. May be able to score em for $50 each if I pull em.

Still $450 a pair of 302 heads without cores isnt bad from rockauto. I mean all the valves, guides, seals, decking, hot tanking done. What would somebody have to pay to have all that done at a machine shop I wonder? May make me rethink breaking my *** at the wrecking yard this fall lol.
Same as a 500 minus overdrive.