Horse power, torque, mpg 4.44K viewsJanuary 7, 20170 sambrown January 7, 2017 0 Comments i have a 82 ford 300 i6 that I’m looking to upgrade with your 4 barrel intake manifold. What kind of changes will I see in hp, torque, and mpg? Also, what size carburetor do you recommend for the best results?Share and Enjoy !0Shares0 0 1 AnswerActiveVotedNewestOldest 0 DMarv Posted January 11, 2017 0 Comments Will you be using a Dual Port or a “C” Series intake manifold. Also, will you be doing any other changes to the engine?Share and Enjoy !0Shares0 0 Register or LoginOffenhauser Sales Corp, 5300 Alhambra Avenue, Los Angeles, CA 90032Phone: (323) 225-1307