First engine build question

It is not in the peak HP which is all that number means; I sure wish folks would get away from that stupid HP vs CR Wallace calculator (which is not accurate anyway). It is totally misleading as to the outcome of SCR/DCR changes.

The operating difference for DCR shows up in the low RPM torque. Anyone with hot rod sense will indeed feel a difference of .25 point of DCR in everyday driving, in terms of throttle response. 0.5 point will be noticeably quicker taking off. A full point of DCR makes the engine a very different animal.

So, for a street engine, CR IS quite worth worrying over, as well as forsome racing disciplines. Drag racers just work around it with high stall torque converters, etc., but that is not what works well for a road race car or rally car, where the wider torque band, extended down to the lower RPM's, is very much needed.... or for some street usage if you don't want to rev to 2500+ RPM just to move away from a stop sign. (Though some people may like that LOL)


My point is most just want hassle free performance. They just want car they can just put gas in cruise and burn some rubber.
Their better off being on the low side of acceptable CR. Especially when the gains of a .5:1 is relatively small. His build is gonna be about twice the stock 318 hp Im sure he'll be happy with 9:1 performance.