read from Dave M.'s book, corvette from the inside
pushrods
packaging, costs, weight, low hood line, ease of maint
HIGHER PROFIT MARGINS!!!
DOHC
flow velocity, superior light weight valves, expensive, hand built, heavy, barely fits, broad wide and tall (no low hood line)
the low intake of the LS and light weight makes the modern vettes more affordable.
the DOHC ford has gotten pretty good at HP and light weight AND being affordable which to me just means GM needs to get with the program
corvette needs a real engine again.
the LT5 is a real engine. given 20+ years of development there is no question the LT5 would be able to match the 520+ hp of the new Voodoo flat crank ford.
from an engineering standpoint there is no question the DOHC has some notable advantages, but not from a cost or packaging.
and with modern airflow computational analysis, the new heads flow 370 CFM which is better than BB chevy RACE heads of yore.
I like the little caddy twin turbo v6, it's sneaking up on 500 hp
slap two ecotec heads together with DI and hang a pair of turbos on it and GM could easily build a modern NA engine with over 600 HP that would rev to the moon and have the durability we crave.
I've blown up about 6 pushrod motors racing, I've yet to hurt an LT5 (just saying).
GM needs to smell the coffee the future is turbos, electic drivetrains (supplemental motors aka La Ferrari, NSX, Pooch, ect....)
but be prepared to pay for it. the vette is still a working mans exotic and that's how GM has positioned the car and it's trying to be "all things to all people" to sell more cars
why else would you see a covertable automatic z06 (those words don't even seem to go together do they?)
simple, sell cars. GM at the end of a day is a business, and the vette is finally turning the corner and looks like it may survive for a while longer
give me a turbine spinning a generator, and 4 electric motors with torq vectoring I don't need no STEENKEN valves or pistons
(aka Jag CX75)
I hope to see this before I go, it's on my bucket list.