Originally Posted by dreamstang
If your swapping the motor and s/cing it I say go for a 351.your starting off with more cubes and 4 bolt mains.(not sure they all do).therevare also some good 302-331 short block you can get that come with forged internals.e303 should work ok.the trick flow stuff is also pretty good.
---------- Post added at 08:44 PM ---------- Previous post was at 08:41 PM ----------
I want to get the afr heads if I ever decide to swap mine out.
Most 351W factory engines are not 4-bolt mains, but they do have a much stronger block than the 302. Properly built with main stud girdle, windage tray and valley girdles a stock block 351W is probably good for 600-800 HP which should satisfy your power needs.
The AFR heads are another good choice IMO. For the 351W I would go with the 205 or 215 AFR's.