Shadowdriver
Well-Known Member
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- #1
I am looking at getting 4.09 gears in place of the current 355 . Have a gt350 intake, catback and a dyno tune (8k limit) at this point. Up until recently it was my understanding it was not an issue and a tuner merely “checks the box” and it’s good to go after the install. But I’ve read recently of multiple cars going into limp mode and that the gear can’t be tuned for . Also have read Ford no longer offers the 4.09 gears. Is this a common issue? I’ll need to drive the car a couple days before I can get to the tuner but while he says it’s no big deal he also has not done a car getting a gear swap. Any input is appreciated
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