What transmission for 572 Hemi?

[boss351]

Hi guys, i'm finishing the project for my 70 convertible cuda and now I have to choose which automatic transmission put in my car.. 727 with gear vendors? GM 4l80e? Any advice?ah the engine si a 572 Hemi with 810hp. Thanks

[Schwartz Performance]

I'd do the 4L80. We have done that a few times behind hemis. Lots of aftermarket support. You will likely need to cut your tunnel though.

-Dale

[boss351]

Thanks Dale. what brand do you recommend?

[Schwartz Performance]

Bowler if the budget allows, otherwise Jakes Performance or PATC. The adapter plates are available from PATC as well.

-Dale

[Schwartz Performance]

TCI also has an adapter plate.

-Dale

[benno505]

whats wrong with a 727 thats built? no cutting required. hold 2000hp with a vendors unit too

[boss351]

Thanks for the reply. Cut is not a problem because the car has not the tunnel. Why 5l80 is better than 727 with gear vendor ?

[boss351]

What do you think about tci 6x transmission ?

[Schwartz Performance]

I don't have much experience with 727's but like I said we've done the 4L80e swap a few times.

The 6x I do not recommend after the 60+ hours we spend diagnosing a problem with it and TCI directly. 4 weeks, 3 Trans control modules, 3 handheld tuners, and 1 transmission rebuild later, the problems seem to have been corrected. PCS has a 6 speed valve body for the 4l80e but I don't know how it works not do we have any experience with it.

-Dale

[boss351]

I don't have much experience with 727's but like I said we've done the 4L80e swap a few times.

The 6x I do not recommend after the 60+ hours we spend diagnosing a problem with it and TCI directly. 4 weeks, 3 Trans control modules, 3 handheld tuners, and 1 transmission rebuild later, the problems seem to have been corrected. PCS has a 6 speed valve body for the 4l80e but I don't know how it works not do we have any experience with it.



-Dale

Thanks Dale

[boss351]

I didn't Find Patc internet site..

[Schwartz Performance]

Transmissioncenter.net

[boss351]

Transmissioncenter.net

my mechanic insist to choose the 727 with gear vendor unit. i think that the 4l80e is a better solution.. my partner in business wants to choose a manual transmission (Tremec t56 xl). but the manual does not make the car too nervous? 800 hp on a manual I think they are too many. What do you think?

[Schwartz Performance]

Too many what? And what do you mean by too nervous?

-Dale

[boss351]

Too many what? And what do you mean by too nervous?

-Dale

Too many hp for to use with a manual transmission in the normal street..

[boss351]

Too many hp for to use with a manual transmission in the normal street..

my mechanic says that i would not use the first three gears. then says that the clutch would be too hard and that here in Italy would be a problem. He recommend me the 727 with gear vendor

[Schwartz Performance]

There are clutches like the McLeod RXT that offers easy effort with 1000 ft lb torque capability but they're nearly $1000 USD.
I don't know how traffic is there but maybe you will benefit from an automatic?
The first three gears will get you well over 100mph so you will definitely use them.

-Dale

[boss351]

There are clutches like the McLeod RXT that offers easy effort with 1000 ft lb torque capability but they're nearly $1000 USD.
I don't know how traffic is there but maybe you will benefit from an automatic?
The first three gears will get you well over 100mph so you will definitely use them.



-Dale

If I chose the manual transmission would choose the t56 magnum with the bowler Stage 2 . Mark is a very kind person and he have a lot of patience. In their quote They provided me with all the kit with the double clutch disk but i don't know the model..