We put nearly 15 dyno pulls on my buddy's all aluminum 572 Hemi and it liked 29 the best. Lost 20hp & 20 torque at 30 degrees....My 605 is 32-33 and I have not played with it. So far best 1/8th mile was 6.32 spinning....Lots more in it, but I am only legal to 6.50, so we left the timing where it was, and the mufflers on it.

Vid of one of the 572 dyno pulls
https://www.youtube.com/watch?v=5QjkTW-o1QY

My 6.36 pass against y buddies slower full race car....
https://www.youtube.com/watch?v=NVTE82X6ZQ8

'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