hey guys i want to do efi live but wont be able to do a trans right away how much hp can i push out of my lb7 with out blowin up the trans
thanks
thanks
efi liive
- Thread starter tomc983
- Start date
Just tell the tuner you want a stock trans tune.....roughly 60-80 hp (every one seems different) over stock is as far as you can go with the trans......but I'm warning you now, the excess power is very addicting :angel:
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ive been running the 85 superchips tune for as long as ive had my truck. id say thats about as much horse power you should be adding without doing aleast a trans go or some type of upgrade to your tranny. mine hasnt slip yet... but ive never dropped the tranny to see if the clutches were still good. they could have hot spots all over them, but it still holds with that power so...
We have alot of guys with a +100hp tune (~350 rwhp on the dyno) and stock trans. None of them have limped yet. When guys ask for more I warn that the trans won't like it and the best advice is to lock out OD before you get in it on the highway, then unlock it once you are full throttle. If you are in the sweet spot of 5th on the highway where you are just fast enough it doesn't want to downshift when you roll into it that's when it is easiest to slip and limp it.
Oh yeah, with a built trans it's the same sweet spot that will pin you and hold you in the seat until over 100mph with no interuption from a pesky shift.
I think the bigger question is whether the trans has ever been limped before. Some hold better than others. If it has been limped in the past, 80-90 will limp it again. I would be in the 60-75 range to be safe. A lot depends on driving style as well.
With efilive you can kind of detorque and defuel under 2800rpms. It kind of worked for me untill I decided to try a WOT 4-5shift and it limped after that. then you have to watch out for the TC.