transmission question

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Nov 2, 2012 | 06:28 AM

sandkwagers

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Joined: Aug 2012

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transmission question

Have opportunity to purchase a 4l80 e transmission? Does anyone know major differences between that and the 4l60e? Gearing etc. Doing swap on 1989 Iroc to LS engine. Thanks

Nov 2, 2012 | 06:48 AM

vetteoz

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From: Not in Kansas anymore

Car: 82 Z28

Engine: 383 SP EFI/ 4150 TB

Transmission: T400

Axle/Gears: QP 9" 3.73

Re: transmission question

Much bigger ( may need tunnel mods ), strong and heaver
Same gears as a 3 spd TH400 (2.48 1st ) but with a 0.75 ration in 4th
T700/4L60/4L60E have 3.07 1st gear and a similar (0.70) 4th gear

Last edited by vetteoz; Nov 2, 2012 at 06:51 AM.