1Jz 240sx Rear End Ratio Advice

[g6civcx]

Originally Posted by munkfu

He want a straight drop-in application, he doesn't want to modify/change his axles or whatever.

If you want to keep the stock 6-bolt axles, that's going to be tough.

Originally Posted by munkfu

I know him and I don't know if there's LSD that could give him more top-end on highway. He want to lower his LSD gear ratio, that's all.

The final drive ratio is determined by the ring and pinion, not the LSD.


"Power" is actually the ability to accelerate the rear wheels. This is determined by torque. You want to maximize torque at the rear wheels at the speed you want.

Show me a torque curve, transmission ratios, and tyre size. Tell me if you want an R200 or R230, and 5-bolt or 6-bolt. Then tell me what speeds you want to have maximum torque and I'll tell you what diff would be the best for you.