My previous car was a Gen II Viper. With that car the rockers (valve train) could be changed from 1:6 to 1:7 ratio and it gave a exhaust note a very aggressive chop at idle and added a few horsepower.
Are the LT4 stock cam specs such that a rocker ratio upgrade could induce a noticeable chop without having to do a cam swap?
Here’s an example. This is stock cam and stock heads except for the 1:7 rocker upgrade.
http://youtu.be/_LxjHtuQTec