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GRADYS Performance · 12-18-2013, 02:56 PM

I am preparing to change the TH400 in my 85 2WD C20 Suburban 454 to a 4L80E transmission. Does anyone have experience with what needs to be done for the crossmember?

12-18-2013, 02:56 PM	#1
GRADYS Performance Registered User Join Date: Dec 2013 Location: Columbus, Oh Posts: 366	85 Suburban TH400 to 4L80E swap I am preparing to change the TH400 in my 85 2WD C20 Suburban 454 to a 4L80E transmission. Does anyone have experience with what needs to be done for the crossmember?