My current top speed is only about 155 mph. Eveb the 4L80 would only get me to 185 mph.
I am just wondering if I should do the 6 speed thing and upgrade it as I have problems. Hmmm.
I have a 12 bolt with a 3 seires True trac and 3.08 gears. To my knowledge this is as low as I can go with a good posi. I have a bullet proof 12 bolt which I am sure you know what they cost. If I sold it I would lose my a** and have to buy a different rear id a 9" can even go that low with a good posi.
I sure wish GM had an auto with 4 forward driving gears.
How long would I have to be in 4th gear for a standing mile? My calculations ahow about 15 seconds after I shift to 4th. FLT told me the fluid would start to get boiling hot if held at WOT in 4th. With my 2 trans coolers with all the air flowing through them, I wonder if a 15 second blast in 4th would get that hot or not? Unfortunatly it is a very expensive trans to experiment on.
