4L80E instead of 4L60E - The 1947 - Present Chevrolet & GMC Truck Message Board Network

skokie · 01-05-2008, 02:50 PM

Ok for you guys that have the GENIII motors have anyone of you put in a 4L80E instead of the 4L60E and if so what did you have to do different in the install?

Thanks

Wasted Income · 01-05-2008, 03:58 PM

Just swapped a '60 out for an '80 in my buddy's truck. Different crossmember, different converter, conversion flywheel (or a 4L80E flywheel with a crank spacer.) Wiring harness has to be changed around a bit too. Nothing major, and Speartech makes the conversion pieces for the harness. Lengthen trans cooler lines. Pretty easy swap, IMO.

skokie · 01-05-2008, 07:09 PM

Thanks for the info.

01-05-2008, 02:50 PM	#1
skokie Registered User Join Date: Oct 2003 Location: San Jose Ca. Posts: 3,354	4L80E instead of 4L60E Ok for you guys that have the GENIII motors have anyone of you put in a 4L80E instead of the 4L60E and if so what did you have to do different in the install? Thanks __________________ RIP to my son Dylan. 5/17/2002 - 8/18/2018 If you want to know more about rare forms of pediatric cancer or if you want to help fund pediatric cancer research, please check out the website for the non-profit I started. https://slothforpedcancer.org 68 build thread http://67-72chevytrucks.com/vboard/s...d.php?t=223234

01-05-2008, 03:58 PM	#2
Wasted Income Boosted Member Join Date: May 2002 Location: Mackinaw, IL Posts: 2,200	Re: 4L80E instead of 4L60E Just swapped a '60 out for an '80 in my buddy's truck. Different crossmember, different converter, conversion flywheel (or a 4L80E flywheel with a crank spacer.) Wiring harness has to be changed around a bit too. Nothing major, and Speartech makes the conversion pieces for the harness. Lengthen trans cooler lines. Pretty easy swap, IMO. __________________ 1972 2wd K/5 Blazer Turbocharged 370 LSx - 941 rwhp / 1093 rwtq 1969 Chevy K-10 L33 5.3 / 4L80E / NP241 / 4" lift 1964 Buick Skylark Twin TURBO 383 LS pro-touring project 2014 VW Passat TDI - Daily Driver Turbo diesel 2015 Sierra Denali HD Duramax Turbo diesel 2023 Ford Explorer ST - Twin Turbskis 2023 Ford F150 RCSB - Whipple Supercharged 2017 Polaris RZR Turbo 2014 Nor-Tech Center Console - Twin Supercharged Outboards *TURBO ALL THE THINGS!!*

01-05-2008, 07:09 PM	#3
skokie Registered User Join Date: Oct 2003 Location: San Jose Ca. Posts: 3,354	Re: 4L80E instead of 4L60E Thanks for the info. __________________ RIP to my son Dylan. 5/17/2002 - 8/18/2018 If you want to know more about rare forms of pediatric cancer or if you want to help fund pediatric cancer research, please check out the website for the non-profit I started. https://slothforpedcancer.org 68 build thread http://67-72chevytrucks.com/vboard/s...d.php?t=223234

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