The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post

Houston Ben · 03-16-2015, 01:24 PM

I have the 6L80 in my 86' and is running good. I had the tuner change the shift points and it is a little to firm for me but that can be changed back. I run about 2200 rpm's at 80 mph.

03-16-2015, 01:24 PM	#7
Houston Ben Registered User Join Date: May 2013 Location: Houston Texas Posts: 713	Re: 6l90e or 4l80e? I have the 6L80 in my 86' and is running good. I had the tuner change the shift points and it is a little to firm for me but that can be changed back. I run about 2200 rpm's at 80 mph.