GT40 or 62-1

[cnewingham]

which one do you suggest as I will probably have both. the gt40 has an .81 ar exh and the 62-1 has the .68 exh.
both are fresh so what do you suggest? I will be running 440's, safc2, and only looking for about 12psi right now.

 

[Doward]

62-1 will be better with your current setup (I recommend having your injectors blueprinted by Rich @ Cruizinperformance before doing anything, though)

GT40 will be the way to go, when you upgrade fueling and airflow

 

[annoyingrob]

My GT40 was a little too laggy for my liking on my 1JZ. I would suggest the 62-1

(The GT40 on the 1.5JZ is perfect though )

Ninja edit: 1000 posts

 

[porsches4lunch]

which one do you suggest as I will probably have both. the gt40 has an .81 ar exh and the 62-1 has the .68 exh.
both are fresh so what do you suggest? I will be running 440's, safc2, and only looking for about 12psi right now.

The .68 A/R Turbine housing will give you better spool up than the .81 A/R (depending on the Turbine wheel size) It depends on what you want though, make more power or better throttle response.

 

[86_sports_1jz]

i like the gt40, but the 62-1 is better for your set up

 

[The Reaper]

i would say the 62-1 as ALL of the GT40 Dyno graphs i have seen are laggy as hell. .68 A/R is far quicker than a .81 A/R

 

[drewgo]

the 40-82 with a .68 is very good. I Made 485 @ 21psi and starts to spool at 2800rpm. By 4k the sides of your mouth touches your ears.