The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - Have a 3 speed 400 trans, want a 4 speed 400? Help?

*1LOW4X4* · 01-24-2011, 01:35 AM

You mean the 4L80e that came in the 99 and up hd trucks?

Isnt the bolt pattern different from a 350 to a 6.0 ls based motor?

Sorry all the questions, just trying to grasp this. If this is the trans you speak of, where and how does the computer hook up?
Posted via Mobile Device

01-24-2011, 01:35 AM	#3
1LOW4X4 Account Suspended Join Date: Jul 2010 Location: Southeast Texas Posts: 189	Re: Have a 3 speed 400 trans, want a 4 speed 400? Help? You mean the 4L80e that came in the 99 and up hd trucks? Isnt the bolt pattern different from a 350 to a 6.0 ls based motor? Sorry all the questions, just trying to grasp this. If this is the trans you speak of, where and how does the computer hook up? Posted via Mobile Device Last edited by 1LOW4X4; 01-24-2011 at 01:36 AM.