What transmissions will fit in a 1990 gmc sierra 5.7L?

[sniperlif3]

Well ive got a 1990 gmc sierra c1500 that currently has a 5.7L engine with a 700R4 automatic transmission. I am going to be upgrading my engine to the 454 model but i need to have an transmission that can handle 800+ hp. Does anyone know which transmission would be best if i was to keep it an automatic?

I dont mind if i need to change the ECM/ECU in order to run the new transmission but im just looking for something that can handle the horsepower and can be able to be driven on the street daily

 

[Molson02536]

Well ive got a 1990 gmc sierra c1500 that currently has a 5.7L engine with a 700R4 automatic transmission. I am going to be upgrading my engine to the 454 model but i need to have an transmission that can handle 800+ hp. Does anyone know which transmission would be best if i was to keep it an automatic?

I dont mind if i need to change the ECM/ECU in order to run the new transmission but im just looking for something that can handle the horsepower and can be able to be driven on the street daily

You can install a 4L80E transmission or a 6L80E transmission to your 454. Be interesting to see how your going to get the engine to be a 800 HP and still street drivable though.

Post us back to your 800+ engine set up.