Thermoquad 1966 Metering Rods
Well carb in car now has 98 jets. Sometimes pings/detonates when I mash the go pedal. Previous carb had .101 jets so it would not ping. A co worker told me the richer jets helped. Engine is a 360 with 340 X-heads, a 292 mopar cam with kb-107 pistons. Intake is a Victor 340. 3.91's out back. Also 727 trans with a 9.5" FTI 3400-3600 stall converter.
Try better and/or more octane fuel, the , go to your timing.
Since it ran better with .101 jets and the problems started when you installed .098 jets, seems like you solved your own problem here.
If you were a little rich to begin with, the easier move was with a rod change to begin with. After you check various sources of metering rods to see what the next thicker rod is, if it is not available, then ether have it made, check for the next jet size that will give you the area of jet being searched for or have the jet and rod custom made.
IIRC, it’s ether the carbshop or carbs unlimited will make you what you’re searching for. It is pricey having a rod and/or jet made.
What is your rod and jet combo now?
Did you change the step up spring in the carb?
What is your vacuum reading?
What’s the distributors timing curve?
