Quote:
Originally Posted by DGthe3
The weird thing with the LF3 vs LT1 is that the V8 seems to have been tuned more towards fuel economy rather than power, while its the opposite with the TTV6. So much so that it looks like the LT1 is the more efficient engine overall. It would be one thing if the V6 were more efficicient, while the V8 made more power. But if the V8 has the edge in both ... the LF3 becomes a pretty hard sellto the average buyer.
The only reason why the L99 exists is because an LS3 automatic would probably have gotten slapped with a gas guzzler tax. It wasn't really done to offer buyers a choice between 26 hp or 1 mpg.
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turbo engines by nature are less fuel efficient than n\a ones.