tunnel ram tunning help 408sb

crackedback said
Don't waste your time with the power valves. putting a 3.5 in only makes them open later which isn't the issue at WOT.

When it starts to run poorly, what occurs if you roll out of the throttle slightly? Does it pick up?

what he said and ill add......when you say 60 nozzles i assume you mean jets.going from 54s to 60s is a big jump.try 56 jets first to see if that helps.