I have a gts 4 speed auto w/ m mode deal, i have put trd headers injen Intake ordered my dc headers and was wondering how much horsepower my transmission can hold before i need to upgrade it. does anybody have any clue.and no krackin on the auto
it's really a matter of how fast that horsepower is applied, not necessarily the total amount.
you can have all the horses/torque you want, but your tranny can only spin so fast before it starts redlining (i have a manual gts and redline is 7800rpms)...and obviously driving in the redline for a relatively long time (over 5 seconds) can damage your tranny if you do it constantly enough.
as a rule of thumb, you should be able to add 100 more whp (wheel horsepower) gradually without needing a new tranny--but you still will only be able to go about 170 mph before you hit redline. (thats what it is in a 6spd anyway...4 spd i don't know how big the 4th gear is).
adding horsepower/torque really isnt meant to add top-end speed, it's meant to accelerate faster. thats the limitation of your tranny.
anyway, adding bolt-ons will get you NOWHERE near 100 whp...you can add exhaust, Intake, header, Turbo, nos...whatever..and your still only looking at about 50-60 whp gain...all of which your stock tranny can handle easily (although replacing your clutch with a more aggressive one is recommeneded--the stock clutch is rather weak. if you plan on adding a significant amoutn of horsepower/torque...a new clutch/flywheel should be at the top of your list
anyway, adding bolt-ons will get you NOWHERE near 100 whp...you can add exhaust, Intake, header, Turbo, nos...whatever..and your still only looking at about 50-60 whp gain..:
anyway, adding bolt-ons will get you NOWHERE near 100 whp...you can add exhaust, Intake, header, Turbo, nos...whatever..and your still only looking at about 50-60 whp gain..:
sad isn't it? [/quote]agreed
LNK "you only need something when you know it exists..then it becomes a want"
there is really nothing you can do to upgrade your auto tranny...
it will be fine with IHE.
even if you added a Turbo/supercharger it would still handle the extra power easily (although as i already said a new clutch/flywheel would do him good)
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