4l80e ID - The 1947 - Present Chevrolet & GMC Truck Message Board Network

70inbville · 12-11-2019, 12:15 PM

I have a 4l80e and the tag starts with 1 and I'm not sure of the others letters, my question is; is it an 91 or 2001 ? the cooler lines are one front one further back. I read that earlier models the cooler lines were over top of each other and towards the front??? I was under the assumption this was an 91 until I read about the lines soooo would the white tag say 01 or just 1 for it to be an 2001?

thanks,
Chip

**kwmech** · 12-11-2019, 01:34 PM

I believe 96 and newer had the cooler lines front and rear. 91-95 they were up front just like the rest of the turbo 350-400 cases

12-11-2019, 12:15 PM	#1
70inbville Registered User Join Date: Oct 2011 Location: bartlesville ok Posts: 143	4l80e ID I have a 4l80e and the tag starts with 1 and I'm not sure of the others letters, my question is; is it an 91 or 2001 ? the cooler lines are one front one further back. I read that earlier models the cooler lines were over top of each other and towards the front??? I was under the assumption this was an 91 until I read about the lines soooo would the white tag say 01 or just 1 for it to be an 2001? thanks, Chip Last edited by 70inbville; 12-11-2019 at 12:39 PM.

12-11-2019, 01:34 PM	#2
kwmech Senior Member Join Date: Mar 2003 Location: Colfax-California Posts: 8,389	Re: 4l80e ID I believe 96 and newer had the cooler lines front and rear. 91-95 they were up front just like the rest of the turbo 350-400 cases



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