In a recent interview given to British magazine Autosport, McLaren boss Martin Whitmarsh declared that Formula 1 must decide on one engine format and stick to it for 2014.
Autosport understands that there's been talks amongst the teams to introduce some sort of equivalency formula between the normally aspirated V8s and the new turbo V6 engines since some teams may not be ready to make the switch in two years.
There are concerns that there may not be enough engines available for all the teams or that certain smaller teams may find using turbo engines too expensive. This format would allow some teams to continue using V8s as a back-up option.
Withmarsh, who is also the chairman of FOTA, the Formula One Teams Association said that some sort of an equivalency formula would be an 'unattractive' option for the sport.
"I think you'd have to arrange, if you did it, such that the new turbo engines have advantage over normally aspirated, so you're creating a two-tier championship, which is I think not an attractive thing to have," Withmarsh declared.