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Old 03-10-2015, 03:22 AM   #22
fradaj

 
Drives: RS
Join Date: Jan 2013
Location: Florida
Posts: 1,037
Quote:
Originally Posted by SuperSound View Post
Do you have any basis for that? They make identical HP and the LT1 makes more torque. All the indications are both engines weigh nearly the same. Since we haven't seen a dyno chart on the LF4, there's no basis to believe it would make a similar car faster than one with the LT1.



You are right, gearing does make the difference. Look at the C7 Vette. 3.9 in the manual vs 3.7 in the auto. The 8spd has a taller 1st gear resulting in quicker launch and not shifting as close to 60 as the manual.

We have to remember the SS will likely be "de-tuned" to not match the Vette. I say 4.0-4.2 should be a reasonable target.

There was someone on the forum that said that the LT1 is actually lighter than the LF4, I don't know where they got their facts from though.
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