340 stroked to 378

Any time slips? Thought about doing this with my 340 for more power off the line.
no time slips just bought the car engine is very fresh only 400 street miles on it I"ll take it to the track a few times this year, it's a street - strip car I imagine its a high 11s low 12s car, not the fastest car around but a lot of car for the money I paid, wanted a pump gas car been through race fuel only car there fun but expensive.