ZR-1 Net Registry Forums - View Single Post - 6l80e or 6L90e for our ZR-1's?

Pete · 06-08-2013

I have not done a 6L80/90E trans swap.

At this point the 4L80E is basicly a TH400 with overdrive and a very proven trans.
TransmissionCenter has a tailhousing for the 4L80E but you need to replace the output shaft with a 27 spline 700r4/4L60.

My tailhousing needs no mods to the 31 spline output shaft on the 4L80E
you reuse your stock ZF driveshaft,stock C-beam.

Also if you choose to on the 4L80E you can go with 2.75 first gear.

Pete

06-08-2013	#13
Pete Join Date: Dec 2003 Location: Chicagoland,IL Posts: 2,667	Re: 6l80e or 6L90e for our ZR-1's? I have not done a 6L80/90E trans swap. At this point the 4L80E is basicly a TH400 with overdrive and a very proven trans. TransmissionCenter has a tailhousing for the 4L80E but you need to replace the output shaft with a 27 spline 700r4/4L60. My tailhousing needs no mods to the 31 spline output shaft on the 4L80E you reuse your stock ZF driveshaft,stock C-beam. Also if you choose to on the 4L80E you can go with 2.75 first gear. Pete __________________ '91 #1635 PoloGreen 350 LT5 11.09 @ 129.27 11.04 @ 128.86 474RWHP 400RWTQ http://www.youtube.com/watch?v=SFNFOhGGlR4 http://www.youtube.com/watch?v=ZlRIOMwaDYY https://sites.google.com/site/peteszr1garage