Gallery: The Day Art Pollard & Plymouth Ruled Indy Cars - Mopar Connection Magazine | A comprehensive daily resource for Mopar enthusiast news, features and the latest Mopar techMopar Connection Magazine | A comprehensive daily resource for Mopar enthusiast news, features and the latest Mopar tech This story really starts when Richard Petty decided he was leaving Chrysler and going to Ford for the 1969 NASCAR season despite having won 16 races in a Plymouth in 1968 and finishing third in the NASCAR point championship. This left extra money in the Plymouth budget for 1969 and it was decided to use this money to develop a Plymouth high-revving V8 for use in the Indy Car series. Plymouth decided to team up with Andy Granatelli’s STP race team and had engines to Granatelli 90 days after design work had begun. Special help on the engines were provided by International known British engineer Harry Weslake who had developed the powerful Weslake V-12 engine that Dan Gurney drove in winning the 1967 Belgium Grand Prix. Weslake provided special Weslake cylinder heads for the Plymouth motor.