It can be difficult if the engine is in drive because the rear axle noises, gear noises, wheel noises, and other ambient noises will cloud out the engine. You're best bet for an V8 engine is to try and get an recording of the engine in neutral. Try and get half throttle noises, full throttle noises with the engine at full rpm, and full throttle noises in general, idle noises in both drive and neutral. If you have these sounds, the remaining sounds can be created within audio software by changing the speed of the recording.