The 400 came out of my 1978 Suburban, the 350 came out of my 1975 GMC. The expensive quadrajet was on the 350 but it obviously wasn't original. The Quadrajet that was on the 1978 400 isn't worth anything except the price to rebuild it.
Run the numbers first and see how much it's worth. Mine is only worth that much because it's a '69, has a same year stamped baseplate, and was factory original on the big blocks. Most are only worth $3-400.
I emailed the guys over at Quadrajet Power LLC and this was their response:
"Hi, it is likely that the 0 didn’t get stamped and it is 12th day of 69. 69 was a crazy year for Quadrajet production and we have seen many things that were out of the norm before."
Woot! I'm seeing this carb on...
So I sold the 400 but was able to keep the carb. Just for fun I looked up the carb number and it's from a 1978 Chevy truck with a 400 or big block. Perfect, that's what t came off of. Then I decided to check the Q-jet that was on the 350 I put in.
70 - Rochester Quadrajet
2 - 1960's
9 - 1969
2...
Wiggle, wiggle, wiggle, yeah!
Wiggle, wiggle, wiggle, yeah!
lol
Take out the transmission crossmember and lower it down? I remember having to install one about 20 years ago and I think that's what I did.
This was my thought also. New tabs can be bought from ORD or diy4x.
https://www.offroaddesign.com/fabrication-parts/weld-on-tabs.html
http://diy4x.com/search.php?mode=search&page=1
Yup, mine had the torque rods and plates sandwiched between the motor mounts and block. I'm guessing the transmission is not original since I had the plates, rods, trans cover, but the trans cover does not bolt to the transmission.
After looking at it again it might be best to have the windshield out but you could possibly do it with it in. Here's what it looks like, you can see the rusty spot weld
The top part near the windshield is spot welded in. The sides and bottom are bolted and have a few brackets. Drill out the spot welds and remove it then weld it back in.
:welcome: from northern IL!
You are in the right place! Squarebodies were 73-87 for pickups and 73-91 for Blazers and Suburbans.
Nice looking truck! Mine came from somewhere in WA also, bought it from someone on Oregon and had it shipped to me.