Yes its worth it. The bigger, the better. My next one I am going to jump from my little 484 to at least a +540...604 would be nice too...

And just to dispell any myths we have a little 477 in a 3900lb street car that has run 11.13 already! Pump gas, nearly stock ride...650hp.

My Cuda with a super mild 484 has already clipped off some 6.90's in the 1/8th...

'70 Cuda,...605 EFI Hemi Street Car (6.20 best pass, 1.33 60ft)
https://www.youtube.com/watch?v=WYw6RA-k5Bk (6.25 at 108.75mph from inside car)
https://www.youtube.com/watch?v=3zQEb9uxFng (6.25 at 108mph from outside car)
https://www.youtube.com/watch?v=JCvfzsC4NgM (9.9)

'66 Barracuda AWB Stretched nose Blown 440 Car in build stage

'71 Duster Drag Car 400 Low Deck 512 best 6.002 at 115.44mph
https://www.youtube.com/watch?v=Znuo3jMUXTk