The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - 47-59 4l80 v 700r4

01spirit750 · 10-03-2023, 03:51 PM

I have a 4L80 in my 57. I swapped out the TH400. The 4L80 is longer so a new rear crossmember will be needed.
There were no issues with the firewall or clearance.
Note I have a chevelle subframe so my engine location is a bit forward from stock.

Were about in CA are you located.

10-03-2023, 03:51 PM	#17
01spirit750 Registered User Join Date: Oct 2010 Location: Bay Area California Posts: 137	Re: 4l80 v 700r4 I have a 4L80 in my 57. I swapped out the TH400. The 4L80 is longer so a new rear crossmember will be needed. There were no issues with the firewall or clearance. Note I have a chevelle subframe so my engine location is a bit forward from stock. Were about in CA are you located.