What is the fuel pressure?
TriPowers do NOT like more than 5psi.
What about inlet valves?
Center carb should have a .101" sized and the outers should have .086" seats.
Generic kits can contain any size, mostly too large seats.
Also put a drop of light blue Loctite on valve threads to secure them tight.
Float settings?
Setting should be 23/32" on all three.
Also, using the correct PCV-valve?
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1966 GTO Tri-Power
1970 GTO TheJudge
http://www.poci.org/
http://gtoaa.org/
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