Re: Help - BBC 396 - 440 Stroker Street Build
satx 675, dont waste too much money on alloy heads as your bore size and ci wont work them well at all. oem 781 are likely your best choice or RR-ovals in iron if you have no heads. In fact, this may be the application where the shrouded ( for a 4.25" X4") old closed chambers work OK. Small combustion chamber = compression. And they're barely shrouded for a 396.
Anywhere near 500 is going to require a roller cam imho, PROPERLY matched to your heads. To me, that is the "system" you ought be entirely focused on. In fact, you might get ahold of a pro, like Straub or Foxwell if they dont chime in here, and see which head/cam combo might shine for a small bore low displacement rat.
ACES 3112/Team Chevelle Gold #62
Be big, be a 'builder'!