DBK said:Heffner Performance 2.7".
A lot of guys on here have it including me.
bony said:Heffner 2.7 w/ Heffner Tune... 100% satisfied, installed by the GT GUYS
What size is the OEM pulley?bony said:Heffner 2.7 w/ Heffner Tune... 100% satisfied, installed by the GT GUYS
TEXAS GT said:What's the power increase?
californiacuda said:If you go to the Kenne Bell website and look up the Ford GT, there is a table that lists different pulley sizes and the boost that they will make.
TEXAS GT said:What's the power increase?