Quote:
Originally Posted by Aurora40
Are you talking about the GM corporate "high feature" OHC V6? I don't think it has any real relationship to the ZR-1.
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Yeah, but I think Bob's point was the DOHC approach, and not so much the LT5 specifically, yes? W/ the new fuel economy regs on the horizon, it seems apparent that GM was going to have to consider a return to a 4-valve DOHC config to get any kind of performance from small displacement/efficient motors. Whenever doing a side-by-side comparison, the multi-valve, OHC config kicks butt. I drove a little Aveo for a bit; had a 4 banger w/ a DOHC/16 valve in it - damn thing surprised the hell outta me - would really scoot!
I'm betting we'll see more OHCs or DOHCs in the future from GM and others. Ford (for one) has really pushed that OHC concept out quite a bit - even pick-up trucks have 'em. When a N/A 4.6L Mustang makes ppl at an "all Corvette" drag event sweat bullets where none of the Vettes are packin' less than 5.7L pushrod motor, or Pete rubbin' shoulders with 10 seconds using a N/A 350 LT5, it seems to the casual observer that the only way to get comparable power from a 2-valve pushrod is to go to the cubic inches well again.
I'm not making a point except to say that it seems like stubborn tenacity to look a better technology in the face and continue to "drive a square peg in a round hole" (so to speak) with push-rod motors -
especially in their flagship car; the Corvette. Ponder what 6.2L Northstar motor might make...for example
Just rambling.
P.