The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - Need to know a 383 w/TH350 in a 1964 GMC truck longbed?

TheGreen61 · 05-04-2016, 03:44 PM

New motor mounts and trans mount, and most likely have to lengthen the driveshaft.

I had a 305 v6 and 3 speed in my 61 gmc (little different as the frame is different than yours) but when I did my 383 and th400 I used a aftermarket tubular motor mount from a later gen truck and found a factory auto trans crossmember. Had to get my driveshaft reworked with a slip yoke and a different yoke for the tranny.

05-04-2016, 03:44 PM	#3
TheGreen61 Registered User Join Date: Apr 2016 Location: Vancouver, WA Posts: 6	Re: Need to know a 383 w/TH350 in a 1964 GMC truck longbed? New motor mounts and trans mount, and most likely have to lengthen the driveshaft. I had a 305 v6 and 3 speed in my 61 gmc (little different as the frame is different than yours) but when I did my 383 and th400 I used a aftermarket tubular motor mount from a later gen truck and found a factory auto trans crossmember. Had to get my driveshaft reworked with a slip yoke and a different yoke for the tranny.