340 Cam Kits which ones work with a stock block

RT so leave the converter alone for awhile
Have you changed your timing chain lately
If not do it
put one in where you can andvance current cam 3-5 degrees or 6
rerun your compression check and drive test
look no the front of the cam there may be numbers (or not they may be on the back
install one of those cam chain idler tensioners- they do help
AJ do not use any Mopar numbers to compare with any non mopar numbers
mopar does not get those measurement by measuring duration at some lift
they get it from the cam design blueprint
they look at where the clearance ramp meets the acceleration ramp and go 8 degrees further- same on the closing side
that's why it's impossible to degree one in using the timing numbers in the service manuals well not impossible- I've done it by trial and error- repeat-repeat
best to use centerlines
That said the 268 Mopar has very long ramps- It can practically wear out and still not make any noise intake is about 209 @50 Crane would say LOW INTENSITY
he can actually use 260 or even shorter with quicker ramps and much more duration at .200 you can get 209 @.050 with a 256 @.006 cam easily with around 125@200
run that through your dynamic calculator
say intake closes at 55 @006 compared to what he has now