From the Talladega records book. This would have been a 358cid probably Ford since it was Wallace doing the driving.
Looks like a very well built small block paired with a great aero package is capable of getting the job done.
June 10, 2004: Rusty Wallace, while testing a stock car without a restrictor plate for series sponsor Nextel to test communication capabilities, got an overall lap time of 44.27 seconds at 216.309 mph (348.116 km/h), beating Elliott's old record by more than seven-tenths of a second.[16] Wallace topped out at 228 mph in testing and said that speeds of about 235 mph were attainable.[32][33]
