As far as I know all the tubes are the same size. The 70 with the interlock tube is an obstruction. The OD is just a hair over 2" Id is 1".
https://www.ebay.com/itm/121710889905?hash=item1c5688cbb1:g:RdQAAOSwX6VTxpiM
Do you have a tach? Small block and big block are different. The length and connection points are different. That's really about it. the dash harness is where there are some differences in model and year.
You will have to get the plug for the ignition module and wire it in.
Not know to much about that carb. But I know something about carb operation in general. I was reading through you statement. Sound like you want to use that carb. A change in the primary metering rods might might be in order. If that might be fix. Someone here might know. I think EXCUAME is...
Welcome to FEBO. Can you profess what this body type is? Just a pop quiz.
Is this an A-body or an E-body?
By the way. I'm distracted by things in class like the above.
The bad grounds are phantoms that come back and haunt you. Their there but not seen in the minds eye.
I was going off of what you done last. Go back and check. confirm things are correct.
As you are about to do, it will give you a peace of mind of your issue. I would say you got it. Check the...