engine size autocross

[dontlifttoshift]

High revving engines tend to be peaky. There is no torque and then suddenly it will blow the tires off as the RPMs come up. It is difficult to drive a car like that.

Take the engine with the flattest torque curve as it is the most predictable to drive.

[short&wide65]

I would 99% of the time take the cubic inches. So many people are into the destroke idea but RPM capability has a lot to do with valvetrain stability more than bottom end. Look at LS engines for comparison. 6.2-7.0 liter LS engines make better power than 4.8-5.3 engines but the architecture is nearly the same.

The key is combining them both. I'm currently considering a 6.2 block with a 4.8 crank for a total of 5.5 litres that'll rev to 8000 rpm and make about 600 horsepower naturally aspirated.

https://www.motortrend.com/how-to/4-...pm-ls-stroker/

High revving engines tend to be peaky. There is no torque and then suddenly it will blow the tires off as the RPMs come up. It is difficult to drive a car like that.

Take the engine with the flattest torque curve as it is the most predictable to drive.

I've autocrossed a C6 Corvette Z06 and in no way was it peaky at all. It also wasn't difficult to drive and is very competitive. I liked how easy it was to drive at autocross, even on a tight course.