bb/s would be at 500hp while a stroker or big bore will be around 460. Those numbers would be for 7000rpm setups. 550rw with a high RPM big bore is doable.
We (Apocalypse Performance/TW cams) were approached by Engine Labs online magazine to spec a build for a n/a cobra that would see street and road race duties. The goal was to develop and engine that would run on 93 octane, be very affordable, live a long life and be a hell of a lot of fun to...
aftermarket tensioners are very good, just ensure you use those that are metal.
Aviator engines require you to use the cobra oil pan and front cover. DO NOT use the Aviator intake manifold.
4v and 2v blocks are the same. 4V engines used Romeo, WAP and teskid blocks. 2Vs used WAP, Romeo and Windsor block.
yes, you will need C heads and they are inexpensive