The 6.6L Duramax diesel engine has made ... had a choice between the Allison and a ZF 6-speed manual, many went with the more ...

Either diesel engine option for the Ford F-350 Super Duty comes with a 10-speed automatic transmission and provides up to a maximum of 40,000 pounds of towing. Like the 6.6 Duramax, the 6.7 Power ...