How much hp a 2JZ can handle is more than 2,000 HP total with heavy modification, but getting there is going to cost a fortune and it’s realistically more power than you’ll ever use in an amateur drag race. You’re looking at:
Bigger head studs and cams
High-displacement injectors
If you’re looking at building a more reasonable ten-second car (putting a quarter of a mile behind you in under 11 seconds), you roughly need around 400 horsepower per 1,000 kilograms (2,204.62 pounds) your car weighs.
Assuming you’re lightening the load by stripping weight from the car (without reducing your safety!), you can probably hit the ten-second goal with 600 to 800 HP. And 800 HP is the maximum you can add to your Toyota 2JZ safely without pricier modifications and custom machining.
We hope this information helps you safely enjoy your amateur drag racing a bit more. And for your daily driver, don’t forget to try Jerry
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