It's holding up just fine and the car's previous dyno was ~380rwhp. Its getting a Megasquirt now and we are hoping for 400+rwhp at 28psi.

Dimitris

 

I am working for a rotary shop, and so I am seeing my fair share of FC/FD gearboxes. Almost all FC gearboxes have syncro problems. FDs don't. The only FD gearbox that I've seen breaking was on a RX-8 swap (FD 13BT+FD 5-speed tranny), where the input shaft literally snapped. The gears were fine. Horsepower was ~500rwhp at 15psi.

Dimitris

 

500whp and 15 psi with which turbo Dimitris?

My rx7 fc tranny holds perfectly 28 psi with gt2871r but I have some syncro problems.Who cares.

 

It's a Garret GT3582.

Dimitris

 

i have seen these trannies hold up to 600hp with ease..

 

I think I found a solution to the bellhousing issue with the Mazda TII transmission.

You may be able to use a TII tranny with a Ford Ranger 83-88 toyo-koyo bellhousing.
Its a 2.0 block and/or you can use the ranger tranny which has a longer input shaft but its internals are very similar to the mazda turbo style with the oil pan fins on the bottom,