Not to hijack the thread, but what how much duration can you go with a stock 11 inch converter in say a 440 or 383?? The stock cam was 268 duration but if I go to buy a new duration cam at 268 degrees the manufactuer recommends a bigger stall.

CAC

"It takes a Mopar to catch a Mopar!" 1969 Charger R/T 440 1969 Road Runner 383 1970 Cuda 440