BA GTP AUTO SUGGESTIONS

[captmarv]

Hi guys. It's been a while. I am looking to install a new auto into my GTP that will comfortably handle the power and not melt. Can anybody suggest somebody that knows what they are doing and what transmission they would recommend?

[k31th]

how much power does it make... ?

[captmarv]

Only 465rwkw at this stage. I had converted it to manual because I melted 3 auto's but the power delivery is much better with auto than manual. Need something that will handle more horsepower and not overheat

Edited 04/09/23 09:42 PM by captmarv

[k31th]

which auto's have you used? 

[captmarv]

Rebuilt the factory fitted one

[k31th]

Go with either a TH400 or a Powerglide. Optionally add an overdrive for highway cruising. 

[hjtrbo]

If you're rich,

6L90

Circle d triple plate 2800+rpm stall with woven fibre clutch discs suited for PWM lockup

TCM-2650 + 6L90 wiring kit.  

[captmarv]

Thanks for that. Just looked up the price. would be nice sadly outside the budget

[Puffwagon]

Built zf6 without a doubt. It's actually designed to fit the car, it is designed to work with the factory pcm and is tunable through the same system, it has a lockup converter for economy (also tunable), more ratios=more better in a street car, less likely to overheat compared to 70 yo transmissions, can be modified into a 3 speed for drag racing with relative ease, extremely common in wrecking yards for sourcing, you won't need a custom tail-shaft or shifter, many more things to add but not much point writing a novel.

 

For your power level, if you can fit and tune it you'll be around the 5 to 10k mark depending on options, add a few thousand more for fitting and tuning depending on the tuning work carried out. The pcm tune needs to be done as well as the tcm tune, they work together and as such should be tuned together.

 

Just my 2c, you might prefer something else and that is fine

[k31th]

it's a real pain to get a ZF6 to work in a BA... but I guess it's an option