318 LA torque?

"I once put a 340 cam and X-heads on a smogger-teen, and that teen needed 4.10s and a hi-stall,just to get off the line. It did however have pretty good passing power at 65 mph in second gear with 3.23s."
you got it right aj DON'T DO IT unless you ae going racing (in a stock cam class) and have it reved up ALL the time
the 340 cam is around 300 seat to seat and the 440 magnum even larger (and lazier)
the mopar book is wrong
"Mopar says that 268 cam is a 228/235/114/44 overlap [email protected]/[email protected] arms" (lift is correct and very anemic)
340 cam is in the 209 range on the intake- and it just takes forever getting there- the closing ramps are worse than the opening side
the use of some magic factor in the mopar advertised durations to estimat duration is worthless factory cams are different (worse) than MP cams and MP cams changed through the years
the factory durations are consistent and may realistically compared with other factory cams and the DC/MP cams
can use .008 as a reasonable estimator- but again it's different on the open and close also you can compare with Racer Brown and Engle and Isky Mega cams (not quite)