Tuning with the plugs.
I only change the secondary main jets and the primary PVCR’s to change WOT. This particular plug is from a tunnel ram with 1:1 linkage and power valves in both ends, so I have the cruise pretty close. I only change the PVCR’s to change WOT on this application.
Carbs are 4 corner idle. The lean surge was from the T slot restricters being .004 too small. Opened them up and the lean surge was gone.
The one thing I didn’t do on these carbs was change the secondary linkage to an adjustable stop. Kicking myself for that. So you still have to pull the carbs to adjust secondary opening.
I’ll see if I have a decent video of it and post it here.
