· Scratching and Sniffing
Hey Jeff I see the rear ratio differences in the 1JZ cars between standard and automatic. Are the rear end ratios the same for the automatic 7M powered cars throughout the production years or do they differ aswell? Also is there a wide and close ratio R154?Jeff Lange said:86.5-92 7M-GE: 4.30:1
87-88 7M-GTE: 3.909:1
89-92 7M-GTE: 3.727:1
90-92 1JZ-GTE 5-speed: 4.10:1
90-92 1JZ-GTE Auto: 3.909:1
I know the GA70 had 4.54:1 in some cars, not sure what different variations had what (1G-GE, 1G-GTE, 5-speed/auto, etc).
Hope that helps.
I'd go 3.91 or 3.73 if I were you.
With the lower gear such as 4:30 you'd get more traction with less tire spin. Taller gears equal more tire spin. I'm thinking of going R154 with the 4:30 LSD. My concern is what my RPM's will be at the end of the quarter and will I be able to finish in fourth?