Quote:
Originally Posted by WildBillyT
No argument there. I just don't buy into the whole ultra efficiency they are peddling now. I am in awe of the DI V6 in my dad's Caddy. REAL nice. But it seems to me that even though power numbers for smaller engines are higher, the fuel economy is right where it would be in a engine with more cyls. So what's the point, really? Weight savings? Production costs? Neither of which probably matter much to joe average car buyer.
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Another case in point
2002 Camaro Z28
3500-3600lbs or so
305hp V8 with 6spd manual trans, 3.42 rear gears
EPA numbers converted to the new standard is something like 16/24
2010 Mustang GT
3500-3600lbs
315hp V8 with 5spd manual with 3.31 gears
EPA numbers was somethng like 17/25
2010 Camaro LT
3700-3800lbs
312hp V6 with 6spd auto or manual with 3.45 rear geras
EPA numbers 18/29
GM and everyone else have to meet 35mpg across the board.
The 3.6SIDI probably cost as much to make as the LS3, especially when you bring in the cost of the super high output fuel pump and fuel system that has to handle the now thousands of PSI that is being pumped, but the engines are producing equal power to V8 couterparts of several years ago. But yes the fuel economy and the lower emissions via the direct injection help out the whole cause.
Everyone will start rolling out new and better systems on how to make more power out of much smaller packages. 300hp turbo 4cyl are only a step away.