is this needed for an LS1 swap? havent seen anything about them around the swap threads...

 

Are you referring to the TAC (Throttle Actuator Controller) module? If so, you only need that if you're going with the drive-by-wire throttle body

 

i had a feeling it was for DBW but just wanted to make sure, thanks Dan, i have almost all my engine swap parts! just need a couple things and then im moving onto suspension and transmission, and damn is that tranny gonna kill the budget.

 

Sellers really like their 6 speeds

 

you said it and its too bad i missed out on one cheap, back in Oct i found one rebuilt for $900 on CL and it was 20 minutes from my house... shoulda bought it!

 

I bought my MN12 off LS1tech.com for $1500 shipped to my door

 

what other parts are required to run an mn12 Dan? i have direct access to a T56 when one comes in so its not like i cant find one but if an mn12 is better for the same or less cash id consider it...

 

The only things to keep in mind if you're going to use an MN12 is that there is no torque arm mount on the mn12, so you'd have to relocate your torque arm in which a lot of people are buying transmission crossmembers with the torque arm mounts. The other thing is that I don't think you'll be able to use the GTO shifter, no big deal you can just buy any stock/aftermarket f-body shifter and it'll work if you change the cup to the f-body cup. You also have to use the ls2 starter, as the f-body/truck starters will not fit in the bellhousing of the MN12

Here's what i'm referring to as the "shifter cup" it's held in by a roll pin

 

A lot of people prefer the MN12 over the T56 because of its better gearing and synchro setup. The gearing and synchro setup is the same as a Zo6 vette

Ratios:

fbody - z06/gto
1st - 2.66 2.97
2nd - 1.78 2.07
3rd - 1.30 1.43
4th - 1.00 1.00
5th - 0.74 0.84
6th - 0.50 0.56