I'm confused. I think you said it made these dyno numbers with the cam errantly retarded 8 deg. Then you later say you have since corrected the cam centerline and degreed it to the cam mfg spec. Is that correct?
Has the car been to the track with the cam now properly degreed (if it was)? If so, what did it run?
A 512 RB in a Scamp? That's a rocket waiting to go! Seems like that's an easy 10 sec street/strip car that I would froth at the mouth for!! Sadly, when I was in Michigan a friend i met at the track had a 505 inch BBM in a later model Dart. It woukd only run about 7.30's in the 1/8 mile. Never made sense to me and I moved before he figured it out (if he did). And there's a guy here in Florida with a 440 in one that also runs about 7.30. Car is quite a bit lightened too. Makes no sense to me as I love me a BBM even though I run a 408 that's faster.