how much HP loss from T56 to my TH-400
06-24-2006, 10:12 PM
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how much HP loss from T56 to my TH-400 well as you can see in the sig im putting out around 550 hp. for people who have done the swap, how much HP did you loose.
how much should i expect to loose?
how much should i expect to loose?
06-24-2006, 10:50 PM
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Originally Posted by TondSS
well as you can see in the sig im putting out around 550 hp. for people who have done the swap, how much HP did you loose.
how much should i expect to loose?
how much should i expect to loose?
If you add a stall converter, it will be even more, since they allow for much more slippage.
06-25-2006, 06:08 PM
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Originally Posted by TondSS
holllly **** i hope that is not in my case!!
06-25-2006, 08:01 PM
#7
So long as you get the right TC, you'll be fine. The Power #'s on a Dyno never ever tell the whole truth. Only racing it will.
It's hard to say. It more depends on the TC then the trans. The trans is will rob some more power since you are turning heavier part. But that's what it will take to keep the power in the car and put it to the ground.
It's hard to say. It more depends on the TC then the trans. The trans is will rob some more power since you are turning heavier part. But that's what it will take to keep the power in the car and put it to the ground.
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06-27-2006, 12:06 PM
#8
Friend of mine just did the swap, his car made 497 hp thru the 6 speed and 12 boltw/4.10's, after the swap he made 435 rwhp, but the tq went thru the roof. This is with a loose hughes stll that is stalling about 5000 in his car.
I don't knwo 100% if there's any tuning changes that have to be made for the auto,. maybe a slight tweak for the idle or whatever, but my advise, is do the swap, go to the track first, see what that gets you, and then dyno. This way, when you go to the track and see a massive improvment, you'll be happy, get the dyno # after.
Best part about the dyno #, os that people will ask you what your car makes for power, and you tell them the th400 dyno # and then what the car ran, they'll be like what?
I don't knwo 100% if there's any tuning changes that have to be made for the auto,. maybe a slight tweak for the idle or whatever, but my advise, is do the swap, go to the track first, see what that gets you, and then dyno. This way, when you go to the track and see a massive improvment, you'll be happy, get the dyno # after.
Best part about the dyno #, os that people will ask you what your car makes for power, and you tell them the th400 dyno # and then what the car ran, they'll be like what?
06-27-2006, 01:14 PM
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Wouldn't really worry about the dyno number, huge difference between an unlocked auto and an M6. Like mentioned before, the results will show at the track. Just be sure to put better wheel studs on there so your tire stays on this time 
...
Dan
...Dan
06-27-2006, 02:10 PM
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Originally Posted by DanZ28
Just be sure to put better wheel studs on there so your tire stays on this time ...
Dan
...Dan
OUCH low blow hahaha
thanks for reminding me. we have got them on and reasy to go! cool guys well what do you mean about the tranny being locked or unlocked im new to the auto deal. but i wont have to worry about that right because my tranny doesnt have the stuff the 4l60e does !?!
06-27-2006, 03:50 PM
#11
You mean all the junk that breaks in a 4l60.... no, none of that garbage is in there. I asume you went manual valve body too... also a good move if you did.
Unlocked, means the converter will never lock, so the tranny will always have some slip, but alot of that depends on teh converter you are running, a good effecient converter will have very little slip once up to speed.
Unlocked, means the converter will never lock, so the tranny will always have some slip, but alot of that depends on teh converter you are running, a good effecient converter will have very little slip once up to speed.
06-27-2006, 05:54 PM
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Originally Posted by TondSS
hmm i thought the th-400 was always locked up ...
06-27-2006, 07:01 PM
#14
Or.... you can have your A3 set up for a lock up verter(but is pricey). I bought my(rmvb/TB'd)TH400 already built LU ready and can lock it up at will with the flip of a switch. Almost the best of both worlds in a non computer controlled tranny.
Still haven't had the time or *** to install it, but am thinking it will suit my needs well w/the tall gear.
As for rwhp loss..... the example in the above post seems 'bout right..... 12-15% would be my guess, but may vary depending on race weight and rear gear/tire combo.
Still haven't had the time or *** to install it, but am thinking it will suit my needs well w/the tall gear.
As for rwhp loss..... the example in the above post seems 'bout right..... 12-15% would be my guess, but may vary depending on race weight and rear gear/tire combo.
06-27-2006, 08:15 PM
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I have a 4l80 coming with a 3600 stall and the b&m shifter. Going to add a manual push button on the sixspeed upper console to lock and unlock the converter. I cant wait. I was torn between a 4l80 and a th400. I rode in two cars. One with a th400 and another with the 4l80. It was really nice having the extra OD when enjoying the car and not all out racing.
06-28-2006, 01:28 AM
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Originally Posted by TondSS
OUCH low blow hahaha thanks for reminding me. we have got them on and reasy to go! cool guys
well what do you mean about the tranny being locked or unlocked im new to the auto deal. but i wont have to worry about that right because my tranny doesnt have the stuff the 4l60e does !?!
thanks for reminding me. we have got them on and reasy to go! cool guys well what do you mean about the tranny being locked or unlocked im new to the auto deal. but i wont have to worry about that right because my tranny doesnt have the stuff the 4l60e does !?!
. 
06-28-2006, 11:11 PM
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Originally Posted by JMBLOWNWS6
I have a 4l80 coming with a 3600 stall and the b&m shifter. Going to add a manual push button on the sixspeed upper console to lock and unlock the converter. I cant wait. I was torn between a 4l80 and a th400. I rode in two cars. One with a th400 and another with the 4l80. It was really nice having the extra OD when enjoying the car and not all out racing.