engine size autocross

[dontlifttoshift]

In attempting to contradict me you are making my point, thanks! The LS7, even cammed to match the theoretical HP output of you 5.5 liter screamer, will be waaaay easier to drive......because flat and predictable torque curve. The LS7 is awesome but it's a pretty mild engine.



From the link you posted

the 339-inch motor produced 607 hp at 7,900 rpm and 466 lb-ft of torque at 6,200 rpm.

That's going to suck to autocross

[short&wide65]

In attempting to contradict me you are making my point, thanks! The LS7, even cammed to match the theoretical HP output of you 5.5 liter screamer, will be waaaay easier to drive......because flat and predictable torque curve. The LS7 is awesome but it's a pretty mild engine.

From the link you posted That's going to suck to autocross

While I agree that upon first glance the engine at the link I posted could be considered peaky, I'm not looking to build an exact copy. Those horsepower and torque numbers are also on an engine dyno so they are gross, not net so once it's in a car, it's probably close to the LS7's 505 horsepower.

The LS7 makes 475 lb-ft at 4800 RPM, which is still pretty high. I've also autocrossed a 2008 BMW M3 V8 which only makes 295 lb-ft at 3900 rpm. It makes 414 horsepower at 8500 RPM and was also really good to autocross.

I disagree that a higher torque peak can't still have a flat and predicable curve. I want a responsive engine that revs and not a burnout machine.