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· Scratching and Sniffing
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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.
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?

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?
 

· Scratching and Sniffing
Joined
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2,680 Posts
drjonez said:
http://www.mkiiitech.com/forums/viewtopic.php?t=40



you're totally backwards- higher numerical ratio = faster accel and lower topspeed, this also eqautes to MORE wheelspin. 4.30 in a 400rwhp+ car = no fun....wheelspin @ 60 mph = poor use of power.
You're right drjonez that's what I meant. But I always refer to higher numerical ratio's as lower gear and vice versa. Bad habit I guess.. Everyone seems to be saying more wheel spin with the 4:30's as opposed to 3:73 or 3:9's If this is the case why do all other drag racers(non Supra) use a higher ratio gear such as 4:88 5:13's? I'm getting ready to do a swap into my 88 NA with a 4:30 rear and am now wondering if I need a different rear end? In which case what would be the ideal ratio for strictly drag racing?
Appreciate any comments.
Thanks.
 
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