Highlights in this issue include a conversation with Dr Donatus Wichelhaus and a dossier on the KPE EFI blown big block Chevrolet. A look at the Roger Clark Motorsport Gobstopper II as well as reports from the PRI Show 2015 and the Top Fuel Horsepower Measurement Seminar. Part two of our insight into crankshaft torsional vibration as well as focus articles covering con rods, radiators and coolers.