So a little update tonight went through the valve train. Brought #1 to Top Dead Center

Exh.- 1 – 3 – 4 -8​
Int.- 1- 2 – 5 - 7 ​
​
Get #6 to Top Dead Center

Exh.- 2 – 5 – 6 – 7​

Int.- 3 – 4- 6 - 8

Brought it to finger tight on the pushrods and turned past 1/4turn and set the set screw on the roller rockers.
Still same vacuum inches of murcury
600rpm =10.5inches of murcury
800rpm=13 inches of murcury
And the higher I went on the rpms the inches of murcury increased
I have all 4coners of the carb idel screws set to 3/4turn out from bottomed
Even though it is an auto trans it seams to really like 600rpm idel.

Went for a ride down the highway it's still backfire ing out the exhaust probably not as bad but still doing it in the 2000-2500rpm range.