NASCAR tentatively approved the new R99 engine General Motors wants to use in the Craftsman Truck Series next year. The R99 is expected to generate more horsepower than the current SB2 engine, but GM is more focused on durability. The R99 has larger camshafts and more bore spacing that is similar to the engine Dodge uses now and that Toyota will run in 2004. If the R99 performs well, GM will push to use it in Winston Cup races in 2005, but NASCAR isn’t likely to grant approval before Toyota joins the Cup series.( Sporting News )(6-9-2003)
