383 runs like a giant turd WTF

I was told my MP 284/484 was "way too much cam" for my 9.5:1 70 HP 383.

I had the same torker intake as well.

Mine ran great, but... I spent time understanding and degreeing the cam.

I believe that 509 may actually be "too much cam", especially if you haven't degreed it.

I also had lots of stumbling issues, until I concocted "frankencarb", which was a 600 Holley with a seconday metering block added from a DP Holley (650, I think), and a whole bunch of pump, cam and jet swapping around. The 650, and 750 I tried must have been too much off idle, but not enough "shot". Was a nightmare to tune, but once it was in, it rocked!

I also ran a ****-load of advance, like 38* or so, but it did fine on 89 octane with a 1/2 tank of 93 on Friday night